Screechy noise coming from left channel

thoven0215 · 5675

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Offline thoven0215

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on: May 15, 2022, 03:39:17 AM
Yesterday all of a sudden there was a very erratic screeching noise coming from the amp. I tried swapping the tubes to no effect. The volume control doesn't do anything to the noise. What could be the issue here? Thank you.


Offline thoven0215

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Reply #1 on: May 15, 2022, 04:07:29 AM
After moving the tube a bit I noticed that it stopped, but any slight adjustment makes the noises come back. Should I just reflow the solder at the socket just to make sure everything is fine?


Online Paul Joppa

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Reply #2 on: May 15, 2022, 04:32:48 AM
If you haven't cleaned the tube pins yet, that might resolve the problem without getting  out the soldering iron.

Paul Joppa

Offline Paul Birkeland

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Reply #3 on: May 15, 2022, 06:07:15 AM
You can also use needle nose pliers to slightly bend the 4 pin socket contacts closer together, though you didn't say which tube you had to bend to change the nature of the noise.  It's also possible you have a solder joint that isn't 100%, and moving the tube around is disturbing that joint.

Paul "PB" Birkeland

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Offline oztayls

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Reply #4 on: September 20, 2023, 03:45:42 PM
I presume you sorted out your problem? Did you find the cause?

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