DjunaSaurus wrote:SubStyler wrote:check the area around C11, C31, C32 (voltages across) Q24, Q25 and the solder joints at S1.
maybe one of your eletcrolytic capacitors is bad or soldered in a wrong direction?
if you try to get saw wave, IC23 is getting hot?
I triple checked and everything is soldered right. But I didn't solder C31 and C32 yet (the manual didn't say so), but that normally shouldn't have any effect on the saw right?
you're right. I did not know how far your build has gone at this time. I had the same problem recently and it was a faulty electrolytic cap... C11 to be exactly.
therefore my thought.