I have an Adcom GFA 7605 and one of the channels blew. Now there's about 60 volts on that channel's speaker terminals. I took the board out. It looks like transistors Q8 and Q16 need replacing. I don't know how to identify them. Q16 is in a TO-92 has what looks like house numbers on it. KSP
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-209 I would have to remove Q8 to see its face. It has four pins. I did a little troubleshooting with a voltmeter by probing different spots on the bad board and comparing to the readings I took at the same points on a working channel's board. The region of the board with the inappropriate high voltage readings contains those two transistors. Q16 is not cracked but looks a bit singed and I can't tell about Q8 but one of its pins has the wrong voltage. Of course a bunch of other solder points on the board have wrong voltages too, but one or both of those transistors look to me most like the culprits. I could try contacting Adcom but it seems unlikely they would help me. How should I fix this amp?