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Re: My QDX went almost deaf (something's wrong with op-amp bias?)


 

On Thu, Dec 1, 2022 at 12:10 PM, Adam wrote:

- IC7A in- (pin 2): 0.890 V
Adam,

Good work! Do you still have the caps shorted, C71-C74?

IMO, that would have to be a pretty good spike to travel that far through the chain to not messed something else up.

Surge suppression is always a good idea, as well as good grounding!!

You did a lot of SMD work; it sounds like you're on the right track!

--Al

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