godwentpunk
New Member
- Joined
- May 16, 2018
- Messages
- 20
I apologize for the long post....
I noticed a couple months ago my amp was producing a hum that would slowing come and go. About 3 weeks ago the hum got noticeably louder and I tracked it down to the reverb. Regardless if the reverb was engaged or not, I would hear the hum and the only way to make it go away was to turn the reverb knob all the way off. So I decided to see if it was a tube issue. I took the back off, replaced the tube, put the back on and I still got the hum... so I decided to try a different tube... and OMG, the hum went away. So I screwed the back plate back on and to my amazement, the hum came back... WTH??? So while the hum was going, I unscrewed the back plate and as I slowly removed it, the hum went away.. as I brought the back plate back up, the hum came back.... What could be going on that the back plate is causing my reverb to act up?? Could it be some frequencies that is causing something to react weirdly? This is first time I've ever encountered this so I was hoping that maybe someone else heard of this happening before. Could my reverb tank be going bad??
thanks for any insight.
The amp is a PRS Custom 20 combo
joe...
I noticed a couple months ago my amp was producing a hum that would slowing come and go. About 3 weeks ago the hum got noticeably louder and I tracked it down to the reverb. Regardless if the reverb was engaged or not, I would hear the hum and the only way to make it go away was to turn the reverb knob all the way off. So I decided to see if it was a tube issue. I took the back off, replaced the tube, put the back on and I still got the hum... so I decided to try a different tube... and OMG, the hum went away. So I screwed the back plate back on and to my amazement, the hum came back... WTH??? So while the hum was going, I unscrewed the back plate and as I slowly removed it, the hum went away.. as I brought the back plate back up, the hum came back.... What could be going on that the back plate is causing my reverb to act up?? Could it be some frequencies that is causing something to react weirdly? This is first time I've ever encountered this so I was hoping that maybe someone else heard of this happening before. Could my reverb tank be going bad??
thanks for any insight.
The amp is a PRS Custom 20 combo
joe...
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