5e3 Troubleshooting

[Javabirds]

Alright! I found that I missed the 1.5K resistor on the tag board. I just forgot it! So I wired it in and it works!!!

Phew! Thanks for answering my dumb questions and giving me a little confidence to forge ahead.

Now I need to do some forum research on here to debug it. When I turn the tone pot up all the way it shrieks horribly. Turn it down and it sounds great.
But that is a HUGE improvement over no volume at all!

[txstrat]

Great to hear that it works. Well done.
Regarding the shrieking: if the amp had a negative feedback, I'd say interchange the wires to the power tube plates. But a standard 5E3 don't have a NFB.
Might be the lead dress.
Take a wooden stick (chopstick) and move the wires inside the chassis around. Any changes?
Look if you could shorten the grid wires (of any tube) or move the 1.5K grid stopper resistors (to the power tubes pins 5) from the board directly to the tube sockets.

[Javabirds]

I'll have to get into it in the morning. Thanks again!

I have moved this thread to:
http://music-electronics-forum.com/t23302/