Re: [vintagesynthrepair] Re: Hammond H100
2008-04-07 by Frank Simon
Tim, You may not be familiar with the H model after sn15000, It is like the basic H model but a couple sections went solid state. There is no rhythm unit. I
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2008-04-07 by Frank Simon
Tim, You may not be familiar with the H model after sn15000, It is like the basic H model but a couple sections went solid state. There is no rhythm unit. I
2008-04-07 by timothy kosiorek
Then I would check out the connector plugs especially the one on the rhythm unit.also check out the high low volume tab switch contacts. Tim K. direct link to
2008-04-06 by Frank Simon
Tim, This H-100 is above sn15000. It is solid state preamp and percussion, Only has tube finals and rectifiers which I believe are good. Frank ... From:
2008-04-06 by synthparts
Did you try checking the wires going to the power jack? They are easily broken when opening 106s... Doug www.synthparts.com
2008-04-06 by timothy kosiorek
Check the tube sockets,gently rock the preamp tubes in their sockets before they get too hot to touch,have a key pinned down and one of the presets pinned
2008-04-06 by Roy J. Tellason
... That strongly suggests that the trouble is in that area, to me. -- Member of the toughest, meanest, deadliest, most unrelenting -- and ablest -- form of
2008-04-06 by Frank Simon
Tim, I bought it at an auction for $80 not working. Not knowing Hammond well, and the presets never latched, I thought it had no sound. At the time I did not
2008-04-06 by timothy kosiorek
I live in Cleveland now but I used to live in Copley and worked for 5 of the Akron area music stores,did a lot of repairs in Norton,Barberton and
2008-04-06 by fsimon100
Does anyone have a descent schematic of a Prophet 10? I found a free one and it is hard to read. Plus it has a 12volt regulator in the schematic where I
2008-04-06 by cockandswan
Hey guys, I have a Juno-106 that stopped turning on a little while after I had replaced a voice chip. I m still learning about electronics and I m just looking
2008-04-06 by fsimon100
Tim, I now see the mechanics of the preset keys. I was curious of the comment of the contacts for my volume problem. I can hold the preset key down even though
2008-04-06 by fsimon100
Bob, I think I can see where Tim is coming from on the movement of the bar. Your photos really helped. It appears you would need to spray the ends where the
2008-04-06 by fsimon100
Bob, I think I can see where Tim is coming from on the movement of the bar. Your photos really helped. It appears you would need to spray the ends where the
2008-04-06 by Bob
You are, of course, correct. My point is that someone who did not know any better could make a mess of things...I can just see someone emptying a 16 ounce can
2008-04-06 by fsimon100
Bob, Thanks. I m certain I need to take it apart and fix it properly. Your picures gave me great insite of the mechanics. Does it disassemble from the front or
2008-04-06 by timothy kosiorek
If you notice the key contacts are way in the back of the key away from the trough were I suggested spraying the lube. Tim K.
2008-04-06 by timothy kosiorek
I am one of only about 3 techs that work in northern ohio,Cleveland and Akron has tons of Baptist churchs, I have 40 in cleveland alone that does not count
2008-04-06 by Bob
For those of you interested, I posted a couple pictures of this mechanism on my Flickr site: http://flickr.com/photos/korkeesdad/ Perhaps this will help those
2008-04-06 by Roy J. Tellason
... I guess you ve been lucky, then. (I ve worked on Hammonds a bit longer, started in 1975 :-) ... WD stands for Water Displacement . It s made of two
2008-04-06 by Roy J. Tellason
... Absolutely! ... Wouldn t that be better as a few beers _after_ the job ? :-) -- Member of the toughest, meanest, deadliest, most unrelenting -- and
2008-04-06 by Bob
I agree that the use of WD-40 is a very bas idea. WD-40 is a great product, but it has it s place...that place is not inside a Hammond. IMHO, any kind of spray
2008-04-06 by timothy kosiorek
Hello:I ve used this only on Hammond preset keys and not on key contacts and I ve used it for 30 years without any problems,if you take the preset keys section
2008-04-06 by mtcasino
It looks like Electrolube has a number of products. Witch one do you use? HYPERLINK
2008-04-06 by Brian Davies
Without doubt one of the worst things to do with any keyboard is to use WD40 on it. It is intended to be used on motor vehicles, around the ignition for
2008-04-06 by timothy kosiorek
I see this problem with a lot of Hammonds and I usually try to cure it without taking anything apart,the grease on the mechanism gets thick with age and keeps
2008-04-06 by Bob
The preset keys can have the same problem as any of the keys...that is that dirty contacts will prevent them from operating. I had the same symptoms on my H
2008-04-06 by fsimon100
H-100 My preset keys won t stay engauged. How do you disassemble to get underneath keys to fix. Also I have low volume if I hold them down manually. I know
2008-04-06 by inocencio66
... Very good info. The cpu pin 4 reads +5. After doublechecking, d17 (octave up) is conducting both ways, and (very much hopefully!) is what´s confusing the
2008-04-05 by robert andrew scott
Hello there, Have you managed to fix your Repeat function? I had the same problem with mine. I think something must ve shorted when I was working on that
2008-04-05 by Philip
No problem... Yes it s pulsing digital signals, and to check them you need a logic probe or a scope. Then you can probe around the CPU to if you have the
2008-04-05 by inocencio66
Phil, thanks once again for your help. I really had no idea. Seems the power supply is ok as all the checkpoints read ok. The other day when both the load and
2008-04-04 by music@carlsonarts.com
Hi everyone. I haven t gotten any responses to my post before, probably because I neglected to put anything in the subject line. I have two Roland AXIS-1
2008-04-03 by fsimon100
... ... for ... 10. ... resistors. ... on ... loop may ... odds on ... whole ... synth ... two. They ... haven t ... long since I ... don t even
2008-04-03 by Philip
Hi, there are loads of point to check the voltages..the psu in the bottom left of the schems.. Have a look round the edges of the schematic drawing..it shows
2008-04-03 by inocencio66
... One more thing: Where exactly are the cheking points for the +5 and - 5? (Assuming +15 and -14 are for the synth section only)I can only see a +5v mention
2008-04-03 by inocencio66
Thanks for all the answers. Yes, checking the psu and power rails makes a lot of sense. Perhaps there´s nothing wrong with the cpu chip, but I can´t trace
2008-04-02 by Scott
On one of the websites I found the other day someone mentioned that the SH-101 and the MC-202 were essentially the same innerds. This may help , if you come
2008-04-02 by Philip
I would still check the internal power supply first before doing anything. Nothing will work properly including the CPU if you have a problem here. The service
2008-04-02 by Nik Sargeant
The main CPU is an 8049 .. so I would check for signs of life in the CPU by putting a scope on pins 2,3 (for the crystal oscillator) and the key signals like
2008-04-02 by inocencio66
... Yes, but what to check? The service manual is not of much help; well at least not for me: no checkpoints nor voltage references... It seems to be the CPU
2008-04-02 by Philip
Well I ve nearly brought my Arp Quadra back from the dead since I found a source of 8243 s in the UK. Still got a couple of buttons not working
2008-04-01 by gil_we
Are you sure this not an April Fool s hoax ?! ;) 30$ each ?? for a P10 ? Trident ? JX10 ? Sounds tooooo good to be true ! ... loop may ... odds on ... They ...
2008-04-01 by Roy J. Tellason
... I have a couple or three loose-leaf binders full of Hammond stuff I haven t even looked at yet. What kinda parts do you have? It s been so long since I
2008-04-01 by Scott
... I have Hammond H-100 parts
2008-04-01 by Philip
Throw my roland SPV-355 in the mix and you ll be laughing hehe ... http://originals.msn.com/thebigdebate?ocid=T002MSN03N0707A ...
2008-04-01 by dwcalifornia
Thanks, Scott! I ll keep an eye out for a vocalizer. I ve got a Roland VP-70, and some singing friends and I had a lot of fun with it tonight. our soprano was
2008-04-01 by cockandswan
hey guys. so i posted about replacing a voice chip in my juno 106 and it worked for a while and then randomly shut off and has not powered up since. i tried
2008-04-01 by fsimon100
Hi, I just joined. I found three nonworking synths and bought them for $30 each. A Prophet 10, Korg Trident mk II, and Roland Super JX 10. 1)The Prophet has
2008-03-31 by Philip
Dont know, but i d start by checking the power supply. Phil. ... __________________________________________________________ Sent from Yahoo! Mail. A Smarter
2008-03-31 by inocencio66
The SH-101 powers up normally but the key transpose LED stays lit and all the buttons do not work. And it doesn´t make any sound. Is this a common and easy