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I got mine from polida, too.  I was hesitant, but a couple other folks at DIYSB had gotten some from him and they worked OK, so I took a chance.  I got four for about $7 (cheap), but I'm still gonna see if he'll replace them...if not, it's a fairly cheap lesson.  Anyway, lemme know if you need anything!

OK, got an update:  popped my two known good 3080s into my build and the thing fired right up, so apparently I have some bum chips (curse you, ebay!).  Anyway, hope your new chips solve your problems...and if you need voltages after you get 'em, just post back & let me know and I'll get 'em for ya.

J.

Yeah, I'm starting to suspect my 3080s as well.  I have two known good ones that I'm gonna pull from a couple of compressor builds & try out.  I'll let you know what happens.  Thanks!

Bump on this one...I'm having the same exact issue In my case, I made no substitutions and did only the recommended mods.  Voltages on ICs and diodes seem appropriate, but have no voltages from a working unit to compare.  Anyone willing to post?  Would be most appreciated.

Thanks!