- May 3, 2020
- Reaction score
It was a negative voltage on pin 5 I just forgot to put the - in place. I did happen to read your post a few days ago. Glad you got it fixed.Shouldn't pin 5 have a negative voltage on it? Sounds like a similar problem that I just had with my 4500 JCM900 that I made a post about last week. But mine has EL34 not 5881 tubes. So I'm not familiar with the different wiring diagram. They should be similar though right?
I found my problem by checking for voltage at D1