Monday, March 30, 2015
Advice needed for a Yamaha SY 1
Published on Mar 30, 2015 organfairy
"I bought this Yamaha SY-1 very cheap - 400dkr (~$60) - and all was hunkydory untill I found that there is a problem with the envelope generator - a problem that is unfixable because those ass....not-so-nice-persons at Yamaha decided that it was a fantastic idea to cast a block of epoxy around the parts that are most likely to fail! According to the service manual that I found online the reason is to make sure everything inside the blocks has the same temperature. In other words to secure a stable operation. Personally I think the reason is that they didn't want competitors to see how they had designed their circuits. The somewhat similar Roland SH-2000 from the same age are much more repair-friendly and nothing is hidden there - and it is also quite stable to temperature changes.
I made a temporary repair that isn't very good. So I would like to ask if anybody has an idea to what I should do to get it fully operational again?
The music is something I made in 1997 (sorry about the tape noise) and is primarily played on Roland SH-2000. The other instruments are Roland CR-1000, Casio SA-1 and SA-3, and Bontempi KS-3400."
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
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