Quote Originally Posted by leo View Post
well done, at least you have some progress!

Don't suppose you have a scope? it would make finding whats causing the missing channel much easier

Regarding the bass, see the bottom pic with the three oscons? try changing the middle oscon to say a standard 10uf electrolytic, let it run for an hour and see if it makes any difference, that cap is for the dacs internal analogue bias, low ESR is good here but I personally didn't like a oscon in that position

also the large pair of caps in the middle of the board seem to be non polar, these are not really suited for supply decoupling, try a couple of polarised caps there instead

I know its hard but also try to keep the legs of the caps as short as you can, your adding inductance with the long legs, the caps should have as short lead length as possible to the chips, it makes them more effective

Hi Leo

Thanks for your reply

I meant the left channel is working, not right. I intend to cut the legs much shorter when this bloody thing works!

I have put a meter between pin 1 of opamp and L-OUT and its fine. But I don't get a reading between pin 7 on the opamp and R-OUT. If I turn up the volume on the amp and turn the balance control right around I can hear I faint sound (Probably cross-talk)

Completely stumped