TSB
Well-known member
I've checked the HVsafety caps for shorts, but have not checked them with an esr meter. They have new solder, now.
I replaced the HOT & fuse, but the buzzing was still there so I powered it off immediately. The sound isn't like a SG noise. It's more of a feedback noise. It is less audible when the speaker is disconnected.
How would I verify that the B+ is not low to ground?
I replaced the HOT & fuse, but the buzzing was still there so I powered it off immediately. The sound isn't like a SG noise. It's more of a feedback noise. It is less audible when the speaker is disconnected.
How would I verify that the B+ is not low to ground?
B+ Maybe working Ok.
I would suspect the HVsafety caps or bad connection, you might reflow
pins and trace.
The arcing is the reason for the short of the hot.
You would need to replace the parts again and confirm the B+ supply
is not low to ground, each time your fuse blows.
then try it again.
the bussing you might disconnect the deguasser coil during trouble shooting.
If the B+ is stable and you are getting excessive high voltage cause arcing
everywhere including SG on neck board.
If I have the symptom right?
I would suspect the caps just replace them..

