Re: Bush AC34, no sound.
1) There are two red wires, one from the speaker socket and one from the electrolytic. I would expect these to be connected together.
2) When you measured the voltage on pin 4 of the UL41 (green wire) it read 257V which is very very wrong. It is even higher than the screen grid pin 5.
a) Can you let us know if you have unsoldered any of these wires?
b) Can you measure the resistance between the two red wires because it should read zero
As we can not rely on the circuit diagram, we need you to draw out the wires to the tag board and any links on the board so we can work out what is going on. We only need from the transformer end to the gap at this stage. You might be able to do this with pictures from the side.
You should not power the set up again until we have everything sorted. I am fairly sure you will need a new UL41.
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