Heady
100+ Head-Fier
- Joined
- Jul 8, 2004
- Posts
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I have built several CMOYs and 2 Pimetas. Never had problems with DC offset. I have also built a few amps using Sijosae's design of the 74HCU04 chip without problems.
However the latest one I built has DC offset of 30-50mv on one channel, the other channel is perfect. The amp has an input Polypropylene cap (1uF) and an output electrolytic cap (860uF Oscon). I am curious why I have DC offset when there is an output cap.
Would any of the more experienced DIYers like to suggest things to check? I have checked the soldering visually and with a DMM and it looks good. There doesn't seemed to be any short-circuit and the flux has been cleaned off with flux cleaner.
I am stumped. Thanks for any help.
However the latest one I built has DC offset of 30-50mv on one channel, the other channel is perfect. The amp has an input Polypropylene cap (1uF) and an output electrolytic cap (860uF Oscon). I am curious why I have DC offset when there is an output cap.
Would any of the more experienced DIYers like to suggest things to check? I have checked the soldering visually and with a DMM and it looks good. There doesn't seemed to be any short-circuit and the flux has been cleaned off with flux cleaner.
I am stumped. Thanks for any help.