Korg Poly800/EX800 Users

That looks like a sequencer step display. Did you accidentally move the sequencer enable switch on the back?
Don B.

From: mailto:korgpolyex@yahoogroups.com 
Sent: Wednesday, March 18, 2015 5:27 AM
To: korgpolyex@yahoogroups.com 
Subject: [korgpolyex] Poly800 Mk-1 Battery Mod - have I damaged something? Error 1.85001 [1 Attachment]

  
[Attachment(s) from imadethebbc@yahoo.com [korgpolyex] included below]
 




Hi,
I bought a Poly800 last week which worked: I was able to load the factory presets via a .wav file and most of the keys worked.  I repaired the keys by cleaning the contacts.

While I had the synth open I decided to apply a battery modification which I found at this location  http://analog.no/cms/index.php?option=com_content&view=article&id=50&Itemid=49  
        http://analog.no/cms/index.php?option=com_content&view=a... 
      Analog synthesizer Modifications, Poly-800 MK-1 memory backup battery The Poly-800 didn't have any dedicated battery for keeping the patch memory.   
      View on analog.no  Preview by Yahoo  
     


I confirmed all of the connections and tested them using my multimeter.
This mod is not the same as the one I've now discovered in the file section.  
I removed C87, C88, D23 and D15. I bridged the trace at D15 and cut the trace close to C106
I have not touched R1 or D1

This is a Mk-1 Poly800 which didn't come with a memory backup battery.  There are two 'pads' where the battery holder can be soldered. 

When I powered up the synth it started ok and I made a simple patch to test that all the keys worked.

I then tried loading the factory presets from a .wav file played back from my phone.

The tape load failed and when I re-started the synth I got the error message 1.8 50 01 on the display (see attached image. 

I'm puzzled as to whether something corrupted when I tried loading the factory presets or have I fried something while soldering?

I put all of the removed components back into the synth and re-bridged the cut trace.

The synth is still showing the same error message.


Any suggestions on what I might try next?  I'd like to try resurrect the synth and fix whatever I've done.

thanks,

Peter

Hello Peter,
 Replace IC34 (40H138) and while you're at I would try to replace IC33 (40H240) ..
 the integrated original cost a lot but
 for a budget you can find equivalent 74HC138 and 74HC240 for € 1 ...
 IC34 and IC33 prone to failure, however, replace immediately and solve the problem.

 let me know!


 PS: Changing battery is functioning but the only problem is that every four months you have to replace the CR2032 battery because you download. 



     Il Mercoledì 18 Marzo 2015 20:35, "imadethebbc@yahoo.com [korgpolyex]" <korgpolyex@yahoogroups.com> ha scritto:
   

     I've double checked and the display still shows 1.8 50 01 with the sequencer switch at disabled. Various combinations of switches have no impact.  #yiv8576328607 #yiv8576328607 -- #yiv8576328607ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv8576328607 #yiv8576328607ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv8576328607 #yiv8576328607ygrp-mkp #yiv8576328607hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv8576328607 #yiv8576328607ygrp-mkp #yiv8576328607ads {margin-bottom:10px;}#yiv8576328607 #yiv8576328607ygrp-mkp .yiv8576328607ad {padding:0 0;}#yiv8576328607 #yiv8576328607ygrp-mkp .yiv8576328607ad p {margin:0;}#yiv8576328607 #yiv8576328607ygrp-mkp .yiv8576328607ad a {color:#0000ff;text-decoration:none;}#yiv8576328607 #yiv8576328607ygrp-sponsor #yiv8576328607ygrp-lc {font-family:Arial;}#yiv8576328607 #yiv8576328607ygrp-sponsor #yiv8576328607ygrp-lc #yiv8576328607hd {margin:10px 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv8576328607 #yiv8576328607ygrp-sponsor #yiv8576328607ygrp-lc .yiv8576328607ad {margin-bottom:10px;padding:0 0;}#yiv8576328607 #yiv8576328607actions {font-family:Verdana;font-size:11px;padding:10px 0;}#yiv8576328607 #yiv8576328607activity {background-color:#e0ecee;float:left;font-family:Verdana;font-size:10px;padding:10px;}#yiv8576328607 #yiv8576328607activity span {font-weight:700;}#yiv8576328607 #yiv8576328607activity span:first-child {text-transform:uppercase;}#yiv8576328607 #yiv8576328607activity span a {color:#5085b6;text-decoration:none;}#yiv8576328607 #yiv8576328607activity span span {color:#ff7900;}#yiv8576328607 #yiv8576328607activity span .yiv8576328607underline {text-decoration:underline;}#yiv8576328607 .yiv8576328607attach {clear:both;display:table;font-family:Arial;font-size:12px;padding:10px 0;width:400px;}#yiv8576328607 .yiv8576328607attach div a {text-decoration:none;}#yiv8576328607 .yiv8576328607attach img {border:none;padding-right:5px;}#yiv8576328607 .yiv8576328607attach label {display:block;margin-bottom:5px;}#yiv8576328607 .yiv8576328607attach label a {text-decoration:none;}#yiv8576328607 blockquote {margin:0 0 0 4px;}#yiv8576328607 .yiv8576328607bold {font-family:Arial;font-size:13px;font-weight:700;}#yiv8576328607 .yiv8576328607bold a {text-decoration:none;}#yiv8576328607 dd.yiv8576328607last p a {font-family:Verdana;font-weight:700;}#yiv8576328607 dd.yiv8576328607last p span {margin-right:10px;font-family:Verdana;font-weight:700;}#yiv8576328607 dd.yiv8576328607last p span.yiv8576328607yshortcuts {margin-right:0;}#yiv8576328607 div.yiv8576328607attach-table div div a {text-decoration:none;}#yiv8576328607 div.yiv8576328607attach-table {width:400px;}#yiv8576328607 div.yiv8576328607file-title a, #yiv8576328607 div.yiv8576328607file-title a:active, #yiv8576328607 div.yiv8576328607file-title a:hover, #yiv8576328607 div.yiv8576328607file-title a:visited {text-decoration:none;}#yiv8576328607 div.yiv8576328607photo-title a, #yiv8576328607 div.yiv8576328607photo-title a:active, #yiv8576328607 div.yiv8576328607photo-title a:hover, #yiv8576328607 div.yiv8576328607photo-title a:visited {text-decoration:none;}#yiv8576328607 div#yiv8576328607ygrp-mlmsg #yiv8576328607ygrp-msg p a span.yiv8576328607yshortcuts {font-family:Verdana;font-size:10px;font-weight:normal;}#yiv8576328607 .yiv8576328607green {color:#628c2a;}#yiv8576328607 .yiv8576328607MsoNormal {margin:0 0 0 0;}#yiv8576328607 o {font-size:0;}#yiv8576328607 #yiv8576328607photos div {float:left;width:72px;}#yiv8576328607 #yiv8576328607photos div div {border:1px solid #666666;height:62px;overflow:hidden;width:62px;}#yiv8576328607 #yiv8576328607photos div label {color:#666666;font-size:10px;overflow:hidden;text-align:center;white-space:nowrap;width:64px;}#yiv8576328607 #yiv8576328607reco-category {font-size:77%;}#yiv8576328607 #yiv8576328607reco-desc {font-size:77%;}#yiv8576328607 .yiv8576328607replbq {margin:4px;}#yiv8576328607 #yiv8576328607ygrp-actbar div a:first-child {margin-right:2px;padding-right:5px;}#yiv8576328607 #yiv8576328607ygrp-mlmsg {font-size:13px;font-family:Arial, helvetica, clean, sans-serif;}#yiv8576328607 #yiv8576328607ygrp-mlmsg table {font-size:inherit;font:100%;}#yiv8576328607 #yiv8576328607ygrp-mlmsg select, #yiv8576328607 input, #yiv8576328607 textarea {font:99% Arial, Helvetica, clean, sans-serif;}#yiv8576328607 #yiv8576328607ygrp-mlmsg pre, #yiv8576328607 code {font:115% monospace;}#yiv8576328607 #yiv8576328607ygrp-mlmsg * {line-height:1.22em;}#yiv8576328607 #yiv8576328607ygrp-mlmsg #yiv8576328607logo {padding-bottom:10px;}#yiv8576328607 #yiv8576328607ygrp-msg p a {font-family:Verdana;}#yiv8576328607 #yiv8576328607ygrp-msg p#yiv8576328607attach-count span {color:#1E66AE;font-weight:700;}#yiv8576328607 #yiv8576328607ygrp-reco #yiv8576328607reco-head {color:#ff7900;font-weight:700;}#yiv8576328607 #yiv8576328607ygrp-reco {margin-bottom:20px;padding:0px;}#yiv8576328607 #yiv8576328607ygrp-sponsor #yiv8576328607ov li a {font-size:130%;text-decoration:none;}#yiv8576328607 #yiv8576328607ygrp-sponsor #yiv8576328607ov li {font-size:77%;list-style-type:square;padding:6px 0;}#yiv8576328607 #yiv8576328607ygrp-sponsor #yiv8576328607ov ul {margin:0;padding:0 0 0 8px;}#yiv8576328607 #yiv8576328607ygrp-text {font-family:Georgia;}#yiv8576328607 #yiv8576328607ygrp-text p {margin:0 0 1em 0;}#yiv8576328607 #yiv8576328607ygrp-text tt {font-size:120%;}#yiv8576328607 #yiv8576328607ygrp-vital ul li:last-child {border-right:none !important;}#yiv8576328607

Yes, that's what the step sequencer looks.
You can check the sequencer switch. Check out the schematics in the files section for help on tracing the specific matrix lines that work with the sequencer enable switch.
It could be that the matrix scanning chips are no good but that doesn't happen often. If your synth is making sounds check to see if one of every eight notes doesn't work. That's a good indication of a chip problem in the matrix keyboard scanning. If all of the note keys make sounds then it could be a bit more tricky to figure out. Sometimes the DTC devices fail.
Did your Poly display like that before you put the battery conversion in place? If is was OK beforehand then I suggest you double check all of work and check for any solder fragments or blobs that may have been dropped while you were doing the battery install. Also check to see if you broken or bent any pins on the cable assemblies when you did the work. Also check for any broken wires in those cable assemblies.

/Mike

      From: "imadethebbc@... [korgpolyex]" <korgpolyex@yahoogroups.com>
 To: korgpolyex@yahoogroups.com 
 Sent: Wednesday, March 18, 2015 11:52 AM
 Subject: Re: [korgpolyex] Poly800 Mk-1 Battery Mod - have I damaged something? Error 1.85001
   
    Hi Don, thanks for the quick answer. I'll double check that but I'm pretty confident the sequencer switch is disabled. It's possible that maybe the switch is malfunctioning so I'll investigate further.   
I'm not familiar with the Poly800 :  is that what the step sequencer display looks like?

ok, let me know if you solve and if you need help ..
 hello. 



     Il Venerdì 20 Marzo 2015 11:03, "imadethebbc@... [korgpolyex]" <korgpolyex@yahoogroups.com> ha scritto:
   

     Thank you Vincenzo,  I am going to re-check all of my work first and then will investigate replacing the chips.  
I am hoping to buy an oscilloscope and learn how to use it - the Poly800 might be my first lesson in troubleshooting using a proper tool.

ok ..
 I still have not had time to solve the problem of a roland d5 (turns on but the display shows only squares and not letters) and a korg m1 with problems of distorted sounds.
 anyway let me know .. 


     Il Giovedì 26 Marzo 2015 17:27, "imadethebbc@... [korgpolyex]" <korgpolyex@yahoogroups.com> ha scritto:
   

     I will. Thank you.    I've spent the last 2-3 weeks getting a Roland Juno 106 back to fully working with some simple fixes.   I bought a multimeter and will see if I can troubleshoot the Poly800.   I imagine it is a simple error that I introduced when trying to add the battery. I have a continuity tester now so I can double check that the traces on the circuit board are not broken and also check that all of the ribbon cables are ok.  #yiv8975360856 #yiv8975360856 -- #yiv8975360856ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv8975360856 #yiv8975360856ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv8975360856 #yiv8975360856ygrp-mkp #yiv8975360856hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv8975360856 #yiv8975360856ygrp-mkp #yiv8975360856ads {margin-bottom:10px;}#yiv8975360856 #yiv8975360856ygrp-mkp .yiv8975360856ad {padding:0 0;}#yiv8975360856 #yiv8975360856ygrp-mkp .yiv8975360856ad p {margin:0;}#yiv8975360856 #yiv8975360856ygrp-mkp .yiv8975360856ad a {color:#0000ff;text-decoration:none;}#yiv8975360856 #yiv8975360856ygrp-sponsor #yiv8975360856ygrp-lc {font-family:Arial;}#yiv8975360856 #yiv8975360856ygrp-sponsor #yiv8975360856ygrp-lc #yiv8975360856hd {margin:10px 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv8975360856 #yiv8975360856ygrp-sponsor #yiv8975360856ygrp-lc .yiv8975360856ad {margin-bottom:10px;padding:0 0;}#yiv8975360856 #yiv8975360856actions {font-family:Verdana;font-size:11px;padding:10px 0;}#yiv8975360856 #yiv8975360856activity {background-color:#e0ecee;float:left;font-family:Verdana;font-size:10px;padding:10px;}#yiv8975360856 #yiv8975360856activity span {font-weight:700;}#yiv8975360856 #yiv8975360856activity span:first-child {text-transform:uppercase;}#yiv8975360856 #yiv8975360856activity span a {color:#5085b6;text-decoration:none;}#yiv8975360856 #yiv8975360856activity span span {color:#ff7900;}#yiv8975360856 #yiv8975360856activity span .yiv8975360856underline {text-decoration:underline;}#yiv8975360856 .yiv8975360856attach {clear:both;display:table;font-family:Arial;font-size:12px;padding:10px 0;width:400px;}#yiv8975360856 .yiv8975360856attach div a {text-decoration:none;}#yiv8975360856 .yiv8975360856attach img {border:none;padding-right:5px;}#yiv8975360856 .yiv8975360856attach label {display:block;margin-bottom:5px;}#yiv8975360856 .yiv8975360856attach label a {text-decoration:none;}#yiv8975360856 blockquote {margin:0 0 0 4px;}#yiv8975360856 .yiv8975360856bold {font-family:Arial;font-size:13px;font-weight:700;}#yiv8975360856 .yiv8975360856bold a {text-decoration:none;}#yiv8975360856 dd.yiv8975360856last p a {font-family:Verdana;font-weight:700;}#yiv8975360856 dd.yiv8975360856last p span {margin-right:10px;font-family:Verdana;font-weight:700;}#yiv8975360856 dd.yiv8975360856last p span.yiv8975360856yshortcuts {margin-right:0;}#yiv8975360856 div.yiv8975360856attach-table div div a {text-decoration:none;}#yiv8975360856 div.yiv8975360856attach-table {width:400px;}#yiv8975360856 div.yiv8975360856file-title a, #yiv8975360856 div.yiv8975360856file-title a:active, #yiv8975360856 div.yiv8975360856file-title a:hover, #yiv8975360856 div.yiv8975360856file-title a:visited {text-decoration:none;}#yiv8975360856 div.yiv8975360856photo-title a, #yiv8975360856 div.yiv8975360856photo-title a:active, #yiv8975360856 div.yiv8975360856photo-title a:hover, #yiv8975360856 div.yiv8975360856photo-title a:visited {text-decoration:none;}#yiv8975360856 div#yiv8975360856ygrp-mlmsg #yiv8975360856ygrp-msg p a span.yiv8975360856yshortcuts {font-family:Verdana;font-size:10px;font-weight:normal;}#yiv8975360856 .yiv8975360856green {color:#628c2a;}#yiv8975360856 .yiv8975360856MsoNormal {margin:0 0 0 0;}#yiv8975360856 o {font-size:0;}#yiv8975360856 #yiv8975360856photos div {float:left;width:72px;}#yiv8975360856 #yiv8975360856photos div div {border:1px solid #666666;height:62px;overflow:hidden;width:62px;}#yiv8975360856 #yiv8975360856photos div label {color:#666666;font-size:10px;overflow:hidden;text-align:center;white-space:nowrap;width:64px;}#yiv8975360856 #yiv8975360856reco-category {font-size:77%;}#yiv8975360856 #yiv8975360856reco-desc {font-size:77%;}#yiv8975360856 .yiv8975360856replbq {margin:4px;}#yiv8975360856 #yiv8975360856ygrp-actbar div a:first-child {margin-right:2px;padding-right:5px;}#yiv8975360856 #yiv8975360856ygrp-mlmsg {font-size:13px;font-family:Arial, helvetica, clean, sans-serif;}#yiv8975360856 #yiv8975360856ygrp-mlmsg table {font-size:inherit;font:100%;}#yiv8975360856 #yiv8975360856ygrp-mlmsg select, #yiv8975360856 input, #yiv8975360856 textarea {font:99% Arial, Helvetica, clean, sans-serif;}#yiv8975360856 #yiv8975360856ygrp-mlmsg pre, #yiv8975360856 code {font:115% monospace;}#yiv8975360856 #yiv8975360856ygrp-mlmsg * {line-height:1.22em;}#yiv8975360856 #yiv8975360856ygrp-mlmsg #yiv8975360856logo {padding-bottom:10px;}#yiv8975360856 #yiv8975360856ygrp-msg p a {font-family:Verdana;}#yiv8975360856 #yiv8975360856ygrp-msg p#yiv8975360856attach-count span {color:#1E66AE;font-weight:700;}#yiv8975360856 #yiv8975360856ygrp-reco #yiv8975360856reco-head {color:#ff7900;font-weight:700;}#yiv8975360856 #yiv8975360856ygrp-reco {margin-bottom:20px;padding:0px;}#yiv8975360856 #yiv8975360856ygrp-sponsor #yiv8975360856ov li a {font-size:130%;text-decoration:none;}#yiv8975360856 #yiv8975360856ygrp-sponsor #yiv8975360856ov li {font-size:77%;list-style-type:square;padding:6px 0;}#yiv8975360856 #yiv8975360856ygrp-sponsor #yiv8975360856ov ul {margin:0;padding:0 0 0 8px;}#yiv8975360856 #yiv8975360856ygrp-text {font-family:Georgia;}#yiv8975360856 #yiv8975360856ygrp-text p {margin:0 0 1em 0;}#yiv8975360856 #yiv8975360856ygrp-text tt {font-size:120%;}#yiv8975360856 #yiv8975360856ygrp-vital ul li:last-child {border-right:none !important;}#yiv8975360856

On Thu, Apr 02, 2015 at 08:25:42AM +0000, Vincenzo Vincenzo sarvamala@... [korgpolyex] wrote:
> ok ..
>  I still have not had time to solve the problem of a roland d5 (turns on but the display shows only squares and not letters) and a korg m1 with problems of distorted sounds.
>  anyway let me know .. 

Does the D5 work at all, despite the garbled display?  Check the contrast pot.  If it doesn't make any difference to the display then check that the appropriate pin on the LCD is seeing a varying voltage when you tweak it.

-- 
Gordonjcp MM0YEQ

hello Gordon,
 thanks for the advice but in addition to the problem of the display incomprehensible Roland D5 does not sound ..
 then suddenly everything himself begins to make strange sounds without the pressure of the keys and the LEDs do not light and pressing the function keys nothing happens ..
 according to you can be burned CPU or some other integrated?

 thank you 



     Il Giovedì 2 Aprile 2015 10:47, "gordon@... [korgpolyex]" <korgpolyex@yahoogroups.com> ha scritto:
   

     On Thu, Apr 02, 2015 at 08:25:42AM +0000, Vincenzo Vincenzo sarvamala@... [korgpolyex] wrote:
> ok ..
> I still have not had time to solve the problem of a roland d5 (turns on but the display shows only squares and not letters) and a korg m1 with problems of distorted sounds.
> anyway let me know .. 

Does the D5 work at all, despite the garbled display? Check the contrast pot. If it doesn't make any difference to the display then check that the appropriate pin on the LCD is seeing a varying voltage when you tweak it.

-- 
Gordonjcp MM0YEQ

Are internal demo songs OK? Do they play?

Anyhow, you can try following.

I would do this:
- if machine was not used for longer time, leave it switched on  
through all day as long as possible, but keep eye on it all the time  
(danger of fire ???)

- reset (see below)

- go through test routines (see below)

- check, clean and reseat all connectors inside with contact spray

- reseat all IC's in sockets (be very careful not to bend or break pins)

- measure PSU voltages if they conforms with the spec

- maybe change electrolytic caps in PSU, after so many years maybe  
they need to be replaced

- check internal RAM battery, if it's dead, replace it

- load the original factory data from the ROM card if you have it, if  
not, send some proper SysEx data through MIDI, be it original factory  
set or other

Good luck!

Daniel Forro

P.S.: Isn't this KORG group?


--------
Roland D5 Test Mode

Before conducting the tests, make sure that the pedal and memory card  
are not connected.

Entering test mode:

1 - Press the MODE repeatedly until the ROM PLAY LED lights. The unit  
is now in ROM PLAY mode.

2 - Press and hold the EXIT and EDIT and then press the ENTER; the  
display shows the following indicating that the unit is in test mode.

Select Mode
A/B + ***button

During the test mode the following buttons serve as test selector  
button.

A/B+NUMBER1	BATTERY TEST
A/B+NUMBER2	DA ADJUST
A/B+NUMBER3	A/D, SWITCH TEST
A/B+NUMBER4	LED TEST
A/B+NUMBER5	MEMORY TEST
A/B+NUMBER6	CARD TEST
A/B+NUMBER7	TUNE TEST
A/B+NUMBER8	MIDI TEST
A/B+BANK1	KEYBOARD TEST

Press and hold the A/B and then press the DISP: test routine will  
proceed to the next each time DISP is pressed.

To exit the test mode, turn off and on the unit, or while holding the  
A/B press the INT/CARD.

------------
To check your Pitch and Mod levers go to test 3 which is the A/D and  
Switch test. If you press the pitch to the right it should show in the  
display an increase from 000 to +127. The other direction should go  
opposite - 000 to -127.

With Mod lever it should go from 000 at rest to 127 when pushed forward.

You can also check your panel switches and hold pedal inputs.
-----------------
There doesn't seem to be a 'normal' reset procedure however Roland has  
a section in the service manual called 'Setting Data'. Here it is...

Setting Data

If the tone RAM (main board IC17) has lost the tone data due to  
battery replacement or the tone RAM itself has been replaced, take the  
following procedure.

1 - Enter test mode.
2 - Holding donw the A/B, press the BANK 7; the following settings  
will return to the factory value:

SET UP
MIDI
TUNE/FUNCTION
KEY TRANSPOSE

To recover Patch, Timbre and Internal tone to the factory setting,  
proceed to the following steps.

1 - Enter test mode.
2 - Insert the memory card (D-5 FACTORY PRESET CARD) into the MEMORY  
CARD slot.
3 - Holding down the A/B, press BANK 6. The display will show the  
following message, and the recovery process is completed.

FACTORY PRESET
Load Completed

-----------------------





On Apr 8, 2015, at 11:03 PM, Vincenzo Vincenzo sarvamala@...  
[korgpolyex] wrote:

> hello Gordon,
> thanks for the advice but in addition to the problem of the display  
> incomprehensible Roland D5 does not sound ..
> then suddenly everything himself begins to make strange sounds  
> without the pressure of the keys and the LEDs do not light and  
> pressing the function keys nothing happens ..
> according to you can be burned CPU or some other integrated?

- maybe change electrolytic caps in PSU, after so many years maybe they need to be replaced
NO NO NO. Electrolytic capacitors from 1989 are going to be OK. Statistically, they're OK. The chances of a electro cap from 1989 being bad are very LOW. And the symptoms of the problem don't remotely sound like a electro cap problem.

Everything else is good advice. :-)

/Mike

      From: "Daniel Forró danforcz@... [korgpolyex]" <korgpolyex@yahoogroups.com>
 To: korgpolyex@yahoogroups.com 
 Sent: Wednesday, April 8, 2015 10:22 AM
 Subject: Re: [korgpolyex] Re: Poly800 Mk-1 Battery Mod - have I damaged something? Error 1.85001
   
    Are internal demo songs OK? Do they play?
Anyhow, you can try following.
I would do this:- if machine was not used for longer time, leave it switched on through all day as long as possible, but keep eye on it all the time (danger of fire ???)
- reset (see below)
- go through test routines (see below)
- check, clean and reseat all connectors inside with contact spray
- reseat all IC's in sockets (be very careful not to bend or break pins)
- measure PSU voltages if they conforms with the spec
- maybe change electrolytic caps in PSU, after so many years maybe they need to be replaced
- check internal RAM battery, if it's dead, replace it
- load the original factory data from the ROM card if you have it, if not, send some proper SysEx data through MIDI, be it original factory set or other
Good luck!
Daniel Forro
P.S.: Isn't this KORG group? 


| 
| -------- 
Roland D5 Test Mode 

Before conducting the tests, make sure that the pedal and memory card are not connected. 

Entering test mode: 

1 - Press the MODE repeatedly until the ROM PLAY LED lights. The unit is now in ROM PLAY mode. 

2 - Press and hold the EXIT and EDIT and then press the ENTER; the display shows the following indicating that the unit is in test mode. 

Select Mode 
A/B + ***button 

During the test mode the following buttons serve as test selector button. 

A/B+NUMBER1 BATTERY TEST 
A/B+NUMBER2 DA ADJUST 
A/B+NUMBER3 A/D, SWITCH TEST 
A/B+NUMBER4 LED TEST 
A/B+NUMBER5 MEMORY TEST 
A/B+NUMBER6 CARD TEST 
A/B+NUMBER7 TUNE TEST 
A/B+NUMBER8 MIDI TEST 
A/B+BANK1 KEYBOARD TEST 

Press and hold the A/B and then press the DISP: test routine will proceed to the next each time DISP is pressed. 

To exit the test mode, turn off and on the unit, or while holding the A/B press the INT/CARD. 

------------ 
To check your Pitch and Mod levers go to test 3 which is the A/D and Switch test. If you press the pitch to the right it should show in the display an increase from 000 to +127. The other direction should go opposite - 000 to -127. 

With Mod lever it should go from 000 at rest to 127 when pushed forward. 

You can also check your panel switches and hold pedal inputs. 
----------------- 
There doesn't seem to be a 'normal' reset procedure however Roland has a section in the service manual called 'Setting Data'. Here it is... 

Setting Data 

If the tone RAM (main board IC17) has lost the tone data due to battery replacement or the tone RAM itself has been replaced, take the following procedure. 

1 - Enter test mode. 
2 - Holding donw the A/B, press the BANK 7; the following settings will return to the factory value: 

SET UP 
MIDI 
TUNE/FUNCTION 
KEY TRANSPOSE 

To recover Patch, Timbre and Internal tone to the factory setting, proceed to the following steps. 

1 - Enter test mode. 
2 - Insert the memory card (D-5 FACTORY PRESET CARD) into the MEMORY CARD slot. 
3 - Holding down the A/B, press BANK 6. The display will show the following message, and the recovery process is completed. 

FACTORY PRESET 
Load Completed 

-----------------------  |

 |






On Apr 8, 2015, at 11:03 PM, Vincenzo Vincenzo sarvamala@... [korgpolyex] wrote:

hello Gordon,
thanks for the advice but in addition to the problem of the display incomprehensible Roland D5 does not sound ..
then suddenly everything himself begins to make strange sounds without the pressure of the keys and the LEDs do not light and pressing the function keys nothing happens ..
according to you can be burned CPU or some other integrated?

Hi, Mike,

I know opinions on recapping can differ, so there's two times "maybe".  
In all cases it can't be a mistake to check how they look.

I have included PSU problem, because wrong voltages are often a  
possible source of wrong function, and electrolytic caps are first to  
be suspected. Not just my experience :-)

Daniel Forro


On Apr 9, 2015, at 8:57 AM, Michael Hawkins korgpolyex800@...  
[korgpolyex] wrote:

> - maybe change electrolytic caps in PSU, after so many years maybe  
> they need to be replaced
>
> NO NO NO. Electrolytic capacitors from 1989 are going to be OK.  
> Statistically, they're OK. The chances of a electro cap from 1989  
> being bad are very LOW. And the symptoms of the problem don't  
> remotely sound like a electro cap problem.
>
> Everything else is good advice. :-)
>
> /Mike

Hello Daniel, Mike & perkins 211,
 thanks a lot for your valuable advice .. I understand that it was not the right section to discuss it and I thank you very much for the opportunity ..
 just back home in 15 days I follow the procedures that I have recommended hoping restart it ..
 I let you know the result.
 
hello
 Vincenzo 



     Il Giovedì 9 Aprile 2015 15:03, "bperkins211@... [korgpolyex]" <korgpolyex@yahoogroups.com> ha scritto:
   

     change in behavior could be a foreign conductive object in there creating chaos.

I had such a thing happen to a Kawai K3.   When I moved the synth, set it down on its end a few times I heard something rattle in it.. powered it back on and the problems moved around.. 
finally I found a small pebble sized black ceramic looking object inside the synth.
When I removed it and powered it back on, all was working again.

Look for something where boards might be stacked close to each other.. something could be sandwiched in between, as was in my case until it dislodged itself.  #yiv6894571906 #yiv6894571906 -- #yiv6894571906ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv6894571906 #yiv6894571906ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv6894571906 #yiv6894571906ygrp-mkp #yiv6894571906hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv6894571906 #yiv6894571906ygrp-mkp #yiv6894571906ads {margin-bottom:10px;}#yiv6894571906 #yiv6894571906ygrp-mkp .yiv6894571906ad {padding:0 0;}#yiv6894571906 #yiv6894571906ygrp-mkp .yiv6894571906ad p {margin:0;}#yiv6894571906 #yiv6894571906ygrp-mkp .yiv6894571906ad a {color:#0000ff;text-decoration:none;}#yiv6894571906 #yiv6894571906ygrp-sponsor #yiv6894571906ygrp-lc {font-family:Arial;}#yiv6894571906 #yiv6894571906ygrp-sponsor #yiv6894571906ygrp-lc #yiv6894571906hd {margin:10px 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv6894571906 #yiv6894571906ygrp-sponsor #yiv6894571906ygrp-lc .yiv6894571906ad {margin-bottom:10px;padding:0 0;}#yiv6894571906 #yiv6894571906actions {font-family:Verdana;font-size:11px;padding:10px 0;}#yiv6894571906 #yiv6894571906activity {background-color:#e0ecee;float:left;font-family:Verdana;font-size:10px;padding:10px;}#yiv6894571906 #yiv6894571906activity span {font-weight:700;}#yiv6894571906 #yiv6894571906activity span:first-child {text-transform:uppercase;}#yiv6894571906 #yiv6894571906activity span a {color:#5085b6;text-decoration:none;}#yiv6894571906 #yiv6894571906activity span span {color:#ff7900;}#yiv6894571906 #yiv6894571906activity span .yiv6894571906underline {text-decoration:underline;}#yiv6894571906 .yiv6894571906attach {clear:both;display:table;font-family:Arial;font-size:12px;padding:10px 0;width:400px;}#yiv6894571906 .yiv6894571906attach div a {text-decoration:none;}#yiv6894571906 .yiv6894571906attach img {border:none;padding-right:5px;}#yiv6894571906 .yiv6894571906attach label {display:block;margin-bottom:5px;}#yiv6894571906 .yiv6894571906attach label a {text-decoration:none;}#yiv6894571906 blockquote {margin:0 0 0 4px;}#yiv6894571906 .yiv6894571906bold {font-family:Arial;font-size:13px;font-weight:700;}#yiv6894571906 .yiv6894571906bold a {text-decoration:none;}#yiv6894571906 dd.yiv6894571906last p a {font-family:Verdana;font-weight:700;}#yiv6894571906 dd.yiv6894571906last p span {margin-right:10px;font-family:Verdana;font-weight:700;}#yiv6894571906 dd.yiv6894571906last p span.yiv6894571906yshortcuts {margin-right:0;}#yiv6894571906 div.yiv6894571906attach-table div div a {text-decoration:none;}#yiv6894571906 div.yiv6894571906attach-table {width:400px;}#yiv6894571906 div.yiv6894571906file-title a, #yiv6894571906 div.yiv6894571906file-title a:active, #yiv6894571906 div.yiv6894571906file-title a:hover, #yiv6894571906 div.yiv6894571906file-title a:visited {text-decoration:none;}#yiv6894571906 div.yiv6894571906photo-title a, #yiv6894571906 div.yiv6894571906photo-title a:active, #yiv6894571906 div.yiv6894571906photo-title a:hover, #yiv6894571906 div.yiv6894571906photo-title a:visited {text-decoration:none;}#yiv6894571906 div#yiv6894571906ygrp-mlmsg #yiv6894571906ygrp-msg p a span.yiv6894571906yshortcuts {font-family:Verdana;font-size:10px;font-weight:normal;}#yiv6894571906 .yiv6894571906green {color:#628c2a;}#yiv6894571906 .yiv6894571906MsoNormal {margin:0 0 0 0;}#yiv6894571906 o {font-size:0;}#yiv6894571906 #yiv6894571906photos div {float:left;width:72px;}#yiv6894571906 #yiv6894571906photos div div {border:1px solid #666666;height:62px;overflow:hidden;width:62px;}#yiv6894571906 #yiv6894571906photos div label {color:#666666;font-size:10px;overflow:hidden;text-align:center;white-space:nowrap;width:64px;}#yiv6894571906 #yiv6894571906reco-category {font-size:77%;}#yiv6894571906 #yiv6894571906reco-desc {font-size:77%;}#yiv6894571906 .yiv6894571906replbq {margin:4px;}#yiv6894571906 #yiv6894571906ygrp-actbar div a:first-child {margin-right:2px;padding-right:5px;}#yiv6894571906 #yiv6894571906ygrp-mlmsg {font-size:13px;font-family:Arial, helvetica, clean, sans-serif;}#yiv6894571906 #yiv6894571906ygrp-mlmsg table {font-size:inherit;font:100%;}#yiv6894571906 #yiv6894571906ygrp-mlmsg select, #yiv6894571906 input, #yiv6894571906 textarea {font:99% Arial, Helvetica, clean, sans-serif;}#yiv6894571906 #yiv6894571906ygrp-mlmsg pre, #yiv6894571906 code {font:115% monospace;}#yiv6894571906 #yiv6894571906ygrp-mlmsg * {line-height:1.22em;}#yiv6894571906 #yiv6894571906ygrp-mlmsg #yiv6894571906logo {padding-bottom:10px;}#yiv6894571906 #yiv6894571906ygrp-msg p a {font-family:Verdana;}#yiv6894571906 #yiv6894571906ygrp-msg p#yiv6894571906attach-count span {color:#1E66AE;font-weight:700;}#yiv6894571906 #yiv6894571906ygrp-reco #yiv6894571906reco-head {color:#ff7900;font-weight:700;}#yiv6894571906 #yiv6894571906ygrp-reco {margin-bottom:20px;padding:0px;}#yiv6894571906 #yiv6894571906ygrp-sponsor #yiv6894571906ov li a {font-size:130%;text-decoration:none;}#yiv6894571906 #yiv6894571906ygrp-sponsor #yiv6894571906ov li {font-size:77%;list-style-type:square;padding:6px 0;}#yiv6894571906 #yiv6894571906ygrp-sponsor #yiv6894571906ov ul {margin:0;padding:0 0 0 8px;}#yiv6894571906 #yiv6894571906ygrp-text {font-family:Georgia;}#yiv6894571906 #yiv6894571906ygrp-text p {margin:0 0 1em 0;}#yiv6894571906 #yiv6894571906ygrp-text tt {font-size:120%;}#yiv6894571906 #yiv6894571906ygrp-vital ul li:last-child {border-right:none !important;}#yiv6894571906