Yamaha CS80 group photo

Yahoo Groups archive

Yamaha CS80

Index last updated: 2026-04-28 23:44 UTC

Message

Re: Stuck sounds from the CS80

2018-10-01 by jw_dewdney@...

i just had EXACTLY the same problem after a blown fuse due to a bad diode ... by the time i got the PS fixed up I have a constant stuck note with a little LFO on it -frequency is controlled by the LFO slider ... most other panel controls seem to be working too ... I found THIS page on Old Crow's site and it sounded exactly like the problem - so i tried changing out the chips on my SH board and STILL the same effect ...

one thing i DO notice however is that the 4016 chip is 'full on' ... each pin is at max. voltage - 15v through the Vcc pin and 8.6v through everything else ... so i guess that explains the stuck notes ... but I'm a bit a bit of a loss to explain WHY this is ...

ANYONE?

Attachments

  • No local attachments were found for this message.

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.