Repair Log / Seeburg Disco

 

Everything works on this Jukebox, except the sound, there is only a humming sound.
I started to inspect the Amplifier and found a couple things that don't look so good.

1: There is 1 transistor on this board, that don't look healthy.

I changed all 4 transistors.

 

2: There have bean a fire under the heatzink.