andrewb
Well-known member
I'll send you my bill. 
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I wouldn't mind, there are a few of you guys that are always generous with their time, I think that is a key factor in keeping this hobby alive.I'll send you my bill.![]()
Original schematics show an LM377 = LM1877 there, not an NTE990 (which appears to have a similar pinout, but may not be an exact match -- the datasheet sucks).
NTE990 is a sub for LM377. The best way to find this is to just google both part numbers.