G'day Andre, yes the poly midi out works fine, controlling a voce electric piano. i previously determined there was clock and signal gettting to the tone generator, but no sound out on its output ports, so i figured that was the defective port. best regards, Marcus On Thursday, July 22, 2004, at 02:25 AM, Andre Schaap wrote: > As i said ic34 is responsible for scanning the keyboard, so if this ic > is defective, you won't hear a sound. So far the manual is right. > However, since Marcus said midi out is ok, i presume that the keyboard > is working, otherwise you'd have no midi output, except for the > sequencer. > Maybe Marcus can reply to confirm this. > > English is not my first language , so i hope you understand. > Please send me page 6 and if possible the complete manual. > > Regards > > Andre > > x x wrote: >> Then why does it say on page six that if no sound is heard at all that >> this is the cause? >> I can email the page to you Andre... >> Inm just wondering. >> >> */André_Schaap <andre@...>/* wrote: >> >> hi, >> >> If you don't have schematics you can find it here: >> http://www.oldcrows.net/~patchell/poly800/poly800.html >> >> ic 34 is responsible for scanning of the keyboard matrix. >> So, if you say midi out is ok then this ic is not defective. >> If ic34 is defective, you still should have sound when using midi >> in. >> >> If you have an oscilloscope you can check pins 28 to 36 of ic 3 >> for >> tone >> output. >> >> This is the sound generator ic. >> >> Please check and report. >> >> BTW, TC40H138 is a very common ic. >> If you can't find the toshiba version, there are plenty of other >> manufacturers that produce this ic. >> >> Regards, >> >> Andre >> >> Marcus Wilson wrote: >>> CHEERS!$!@$ >>> >>> will take a look at my stuff n see what i can see! >>> >>> most grateful thanks! >>> >>> Marcus >>> >>> On Wednesday, July 21, 2004, at 06:17 PM, x x wrote: >>> >>> let me know if you got my info on the chip # ic 34 page six of the >>> repair manual for vers one and 2 is the same in this realm. TC40H138 >>> fails there will be no xound heard for some or all of the groups. >>> This seems logical to assume that since all other functions seem >>> working that this would be the answer.When you get it to work I have >>> patches to trade.Good luck >>> Alien >>> >>> */Marcus Wilson /* wrote: >>> >>> sounds like an excellent start anyway!@ >>> >>> i have put my poly to one side at the moment, as i had no clue as to >>> where to proceed, this at least gives me a direction. >>> >>> once again thank you for the info, hopefully it will bring one more >>> poly back to life! >>> >>> thanks! >>> >>> Marcus >>> On Monday, July 19, 2004, at 05:34 AM, x x wrote: >>> >>>> Ok im looking up chip today you will have to find the chip on the >>> net >>>> I dont think ill have one to spare. It wasnt easy locating the last >>>> set ... >>>> It sounds so like the main problem described in the tech notes up >>> date >>>> that I fixed a poly with .... >>>> Will let you know today. >>>> Patrick >>>> >>>> Marcus Wilson wrote: >>>> >>>> awesome!~ >>>> i'd be very keen to find out more. >>>> >>>> Mine was dead until i replaced a couple of power transistors in >>> the +/- >>>> 5V stage that were buggered, and had been poorly messed with by a >>>> previous owner. >>>> I bought mine for $10 in a carpark junk sale, and took it home, >>>> managed to get the midi control side going so now i can control my >>>> other gear with the poly, >>>> >>>> all of the patches etc can be edited stored etc, and i managed to >>>> reload factory settings too, but no sound out. >>>> >>>> It looked like the clock and everything was performing properly >>> but no >>>> tone out of the tone generator. >>>> >>>> Soldering is easy for me, so if you can point me to the correct >>>> component, i should be able to make it happy again, and that >>> would be >>>> awesome! >>>> >>>> thanks again for your info so far. >>>> >>>> Marcus >>>> On Sunday, July 18, 2004, at 06:03 PM, x x wrote: >>>> >>>>> It is one toshiba chip that needs to be replaced. >>>>> It is mentioned in the service manual should all work but no >>> sound be >>>>> heard from the poly 800. Its on the main board. The number of the >>>> chip >>>>> is on my schematics . I cant gurentee it but it is in the service >>>>> notes. apperntly enough of the same prob happend that this was a >>>> major >>>>> note. Im not saying this is or isnt .But Ive bought a few poly >>> 800s >>>>> and its one or the other chips for the output control to the >> sound >>>>> source of the poly 800.... >>>>> If interested Ill get the part number and email the service >>> note. If >>>>> you can solder very finely its not a big chip. I dont know if I >>> have >>>> a >>>>> spare im pretty much building up parts to keep for me when this >>>>> happens again. SinceI have three and I bought some extras let >>> me see >>>>> what I find out when I look through my parts bin I collect >> toshiba >>>>> chips and major processors for the poly .Im now starting to >>> with the >>>>> juno. I will sale poly 800 keys now and some other stuff .This >>> will >>>>> also change I bid on every broken one I can find... >>>>> Peace >>>>> Alien >>>>> >>>>> >>>>> Marcus Wilson wrote: >>>>> >>>>> mines a poly800 yeah >>>>> >>>>> all works for midi control >>>>> no tone generation tho >>>>> >>>>> looking for a working tone generator for it >>>>> >>>>> Marcus >>>>> On Saturday, July 17, 2004, at 09:54 AM, x x wrote: >>>>> >>>>>> is that a poly 800? >>>>>> >>>>>> Marcus Wilson wrote: >>>>>> >>>>>> have you got any tone generator chips you could send me? >>>>>> >>>>>> my poly works on the digital side, all the patches store etc, >>> midi >>>>> out >>>>>> works, just nothing comes out of the tone generator! >>>>>> >>>>>> ive put a cro over the data lines, and signals and clock all >>> appear >>>>> to >>>>>> be working, just that chip has no output on the tone lines. >>>>>> >>>>>> any help available? >>>>>> >>>>>> best regards, >>>>>> >>>>>> Marcus in Oz >>>>>> On Saturday, July 17, 2004, at 06:45 AM, x x wrote: >>>>>> >>>>>>> I collect dead poly 800s//// >>>>>>> >>>>>>> skunkride wrote: >>>>>>> >>>>>>> >>>>>>> Nice one Julio ! Gives me hope about my dead Poly.... >>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>>>> >>>>>>> Do you Yahoo!? >>>>>>> Yahoo! Mail - Helps protect you from nasty viruses. >>>>>> >>>>>>> >>>>>>> Yahoo! Groups Links >>>>>>> >>>>>>> ë To visit your group on the web, go to: >>>>>>> http://groups.yahoo.com/group/korgpolyex/ >>>>>>> >>>>>>> ë To unsubscribe from this group, send an email to: >>>>>>> korgpolyex-unsubscribe@yahoogroups.com >>>>>>> >>>>>>> ë Your use of Yahoo! Groups is subject to the Yahoo! Terms of >>>>>> Service. >>>>>>> >>>>>> >>>>>> >>>>>> >>>>> >>>>>> >>>>>> Do you Yahoo!? >>>>>> Vote for the stars of Yahoo!'s next ad campaign! >>>>> >>>>>> >>>>>> >>>>> >>>>>> >>>>>> Yahoo! Groups Links >>>>>> >>>>>> ‘ To visit your group on the web, go to: >>>>>> http://groups.yahoo.com/group/korgpolyex/ >>>>>> >>>>>> ‘ To unsubscribe from this group, send an email to: >>>>>> korgpolyex-unsubscribe@yahoogroups.com >>>>>> >>>>>> ‘ Your use of Yahoo! Groups is subject to the Yahoo! Terms of >>>>> Service. >>>>>> >>>>> >>>>> >>>>> >>>> >>>>> >>>>> Do you Yahoo!? >>>>> Vote for the stars of Yahoo!'s next ad campaign! >>>> >>>>> >>>>> >>>> >>>>> >>>>> Yahoo! Groups Links >>>>> >>>>> Ô To visit your group on the web, go to: >>>>> http://groups.yahoo.com/group/korgpolyex/ >>>>> >>>>> Ô To unsubscribe from this group, send an email to: >>>>> korgpolyex-unsubscribe@yahoogroups.com >>>>> >>>>> Ô Your use of Yahoo! Groups is subject to the Yahoo! Terms of >>>> Service. >>>>> >>>> >>>> >>>> >>> >>>> >>>> Do you Yahoo!? >>>> Vote for the stars of Yahoo!'s next ad campaign! >>> >>>> >>>> >>> >>>> >>>> Yahoo! Groups Links >>>> >>>> ï To visit your group on the web, go to: >>>> http://groups.yahoo.com/group/korgpolyex/ >>>> >>>> ï To unsubscribe from this group, send an email to: >>>> korgpolyex-unsubscribe@yahoogroups.com >>>> >>>> ï Your use of Yahoo! Groups is subject to the Yahoo! Terms of >>> Service. >>>> >>> >>> >>> >>> >>> >>> >>> Do you Yahoo!? >>> _New and Improved Yahoo! Mail_ - 100MB free storage! >>> >>> >>> >>> >>> >>> >>> >>> >>> Yahoo! Groups Links >>> >>> • To visit your group on the web, go to: >>> _http://groups.yahoo.com/group/korgpolyex/ >>> _ >>> • To unsubscribe from this group, send an email to: >>> _korgpolyex-unsubscribe@yahoogroups.com >>> _ >>> • Your use of Yahoo! Groups is subject to the _Yahoo! Terms of >>> Service_. >>> >>> >> >> >> >> >> >> Yahoo! Groups Links >> >> >> >> >> >> ---------------------------------------------------------------------- >> -- >> Do you Yahoo!? >> Vote for the stars of Yahoo!'s next ad campaign! >> <http://advision.webevents.yahoo.com/yahoo/votelifeengine/> >> *Yahoo! Groups Sponsor* >> ADVERTISEMENT >> <http://us.ard.yahoo.com/SIG=1290at3i2/ >> M=273541.4247512.5496808.2248467/D=grplch/S=1705032144:HM/ >> EXP=1090509786/A=2061551/R=0/SIG=11sr5b9n1/*http://launch.yahoo.com/ >> artist/videos.asp?artistID=1001301> >> >> >> ---------------------------------------------------------------------- >> -- >> *Yahoo! Groups Links* >> >> * To visit your group on the web, go to: >> http://groups.yahoo.com/group/korgpolyex/ >> >> * To unsubscribe from this group, send an email to: >> korgpolyex-unsubscribe@yahoogroups.com >> >> <mailto:korgpolyex-unsubscribe@yahoogroups.com?subject=Unsubscribe> >> >> * Your use of Yahoo! Groups is subject to the Yahoo! Terms of >> Service <http://docs.yahoo.com/info/terms/>. >> >> > > > > > Yahoo! Groups Links > > > > >
Message
Re: [korgpolyex] Reanimator (about my dead poly800mk2)
2004-07-21 by Marcus Wilson