Fender princeton 65 blown output?

[pontiacpete]

Problem solved. I was going to post a bunch of voltages that were clearly not good on the rest of those transistors,
when suddenly they changed to normal readings. I plugged in a speaker and it worked then it didn't.
Turns out that there was a bad solder joint on 2 of the transistors Q10 and Q6.

This was difficult to detect, for couple reasons I suppose. First I had unplugged the speaker when I saw 38v on it, so I couldn't hear anything when banging the board. Secondly, I may need a stronger magnifier being that I thought I had thoroughly looked over the board.
Anyway, I think Enzo was the one who suggested that it could be a connection issue.
Thanks to everyone who helped!

[Enzo]

Ah, no points for me, that is stock technician stuff.

We want you to run the amp with no speaker when there might be DC on the output, but that doesn;lt mean don;t monitor it. I'd have a scope on it, but if you want to hear it, make up a "signal tracer" and "listen" through it to the output. Google signal tracer. Many of them include a diode for RF work, you don;t need that extra feature.

Also a spare volt meter stuck on the output will show the presence of DC or not. That is a perfect job for those give-away meters from Harbor Freight. They are accurate enough anyway, but in this case, all that meter needs to show us of a bunch of DC or no DC. Whether it is 38v or 40v is irrelevant.

[pontiacpete]

I have a signal tracer, one of the old heath kits IT5283. Never thought of using it on the output, thanks for that.
Heck, I've also got plenty of meters laying around not being put to good use., shame. Now I know better.
Much thanks again!!

[Enzo]

"We shape our tools, and then our tools shape us."