Hi guys,
I'm attempting to get my amp going for the first time, it's a....
Jtm 45 bluesbreaker re-issue-re-build with point -point board, & marstran RS OT, all wiring good, tested fine until power tube test section, i did had a few problems, now sorted but I have created/made another problem,
All tested fine until power tube test, got the tubes in place, speaker connected, all pots to 0, turn standby on and I get this "MASSIVE Loud farting/motorbike noise! WTF??
Any ideas guys??