When you do put it back together make sure you get all the insulators in place under those transistors. Also there should be two of the white plastic screw insulators for the bigger transistors on the outside edges. I see one still in the hole on the lower transistor in that picture, remember to put one in the hole for the upper transistor as well.
I'd go back and measure the AC input and DC output of the rectifier bridges.
I wouldn't be too worried about the melted corner on the headphone jack. Just don't make it a habit.
Tom
Hello again,
@TrollDragon I listened to your tips with the Rca connection.
And what can I say, you were right!
Both channels are working now.
I sucked out the solder and soldered it again with less material at the end and pressed the ground connection together better.
So it was mainly due to my "soldering skills" that it didn't work.
@tomchr you are right!
It's been running for a good 30 minutes now without any problems.
Without your help I would have been stranded and probably wouldn't have thought of it.
The tube socket on the left side was exactly the same: I just warmed it up and vacuumed it, then brushed off the dried soldering grease with a toothbrush.
Instead of silver solder, I used the normal solder for the Rca connection.
The sound with the Nichicon Fg capacitors compared to the others is a bit better as described, a bit better bass and more lowends in the treble.
So it fits quite well and I like it better.
I assume the capacitors still need a little time to break in.
Overall, it is now also less warm than usual or before.
Even though it was a bit of work, I'm still satisfied and happy that it's running again.
Many thanks again to both of you, without you it would probably have ended up in the bin.
Ps:I have to look where the white insulators are.when I tighten the screws it doesn't run.I took the screws out first and there are little mats stuck in the housing.