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Old 24th February 2007, 04:51 AM   #1
perritj is offline perritj  United States
diyAudio Member
Join Date: Feb 2007
Location: Akron, Ohio
Default Nec Transistors

I am attempting to repair a Kenwood KA-3500 stereo amplifier that I bought used on Ebay. I have found that two NEC power transistors (B618 R63, and D588 062) are bad. I presume one is PNP and the other is NPN. Also, there is a bad small signal transistor that feeds one of the power transistors above.
All I have on that transistor is part # A733Q163. I don't know if it is an NEC part or not.

Does anyone know where I can buy these three transistors? Are there equivalent part numbers (of other manufacturers).

Also, does anyone know where I can find a schematic for this amplifier?

Timothy Perri
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