5f1 has low volume and is distorted

[leevc5]

I have checked all the wiring switched out the tubes and cannot figure out what is wrong. When I turn the volume control up I hit a spot abobout 75% of the way up where a get a sort of squealing sound then no output after that. below that point I have output but distorted and very low volume.

Any suggestions would be greatly appreciated.

Lee

[Pdavis68]

Is it just a straight up 5F1? Can you post a gut shot?

[loudthud]

Recent thread with a somewhat similar problem: http://music-electronics-forum.com/t30802/