Home Forums GuitarPCB Build Support Sunn Model-T question (answered) Reply To: Sunn Model-T question (answered)

#4459
Barry
Keymaster

If you have noise there is likely another issue but I cannot be sure without testing all transistors first.

They need to all read 4.5v to 5v.

If you get that accomplished and still have undesirable noise I would start check  and re-flowing all common grounds both on and off board as well as using an audio probe if that does not work out to more easily find the offending area.

My circuit does not make undesirable noise and in the year we have been selling them it has never been mentioned as an issue so start with transistors then re-flow common grounds and finally check the entire audio path with an audio probe.