On Fri, Jan 15, 2016 at 08:29:04PM +0900, Daniel Forró
danforcz@... [korgpolyex] wrote:
> Hi, Vincenzo,
>
> thanks for advice, I usually suspect them... but here are only two
> caps and seven resistors in LFO circuit... That electrolytic 33
> uF/16 on the output is probably OK when some voltage pass through it
> (at least I suppose so). I will check the other one - .047 in
> feedback between "-" input and output of the first op amp...
>
I'd look at the opamps first.
In the thick end of 30 years of repairing electronic equipment, I've found maybe about seven or eight genuinely faulty capacitors that weren't in cheap shitty switched-mode power supplies.
Whatever you do, do ∗not∗ "re-cap" it.
--
Gordonjcp MM0YEQ