matttornado
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- Mar 14, 2012
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Hello
I have this issue when I turn my guitar's volume up and down I get a scratchy sound from my amp.
When the guitar volume pot is not being turned, it seems fine. The problem seems to be when I turn the volume from 10 to 0 or 0 to 10 quicky. If that makes any sense. gradual turns of the guitar volume while playing does not make weird noises.
So far I tested an ruled out:
- The guitar - amp did the same thing with my other guitars. Guitars do not make the noise plugged into other amps.
- guitar cord. Only using one and tried a few others - no fix
- cleaned all jacks and sockets on amp - no fix
- checked all three preamp tubes with a known good one - no fix.
- checked all controls on the amp. No scratchy pots - no leaking DC, all amp controls work and sound as they should.
- cleaned all tube sockets
Next step is to open the amp up and poke around inside with a chopstick and try to make the noise happen.
I noticed that when I move the guitar cord's plug , at the amp's input, while plugged into the high treble input, it makes a scratchy sound while the other three inputs don't make a noise when doing this,
I also notice when I wiggle the PI tube, I get some some weird noises but they might be normal?
First thing I'm going to check are the inputs and check the solder joints for any broken or loose wires.
Then chopstick the rest of the amp and look for loose wires / bad solder joints.
Any other suggestions are welcome.
I have this issue when I turn my guitar's volume up and down I get a scratchy sound from my amp.
When the guitar volume pot is not being turned, it seems fine. The problem seems to be when I turn the volume from 10 to 0 or 0 to 10 quicky. If that makes any sense. gradual turns of the guitar volume while playing does not make weird noises.
So far I tested an ruled out:
- The guitar - amp did the same thing with my other guitars. Guitars do not make the noise plugged into other amps.
- guitar cord. Only using one and tried a few others - no fix
- cleaned all jacks and sockets on amp - no fix
- checked all three preamp tubes with a known good one - no fix.
- checked all controls on the amp. No scratchy pots - no leaking DC, all amp controls work and sound as they should.
- cleaned all tube sockets
Next step is to open the amp up and poke around inside with a chopstick and try to make the noise happen.
I noticed that when I move the guitar cord's plug , at the amp's input, while plugged into the high treble input, it makes a scratchy sound while the other three inputs don't make a noise when doing this,
I also notice when I wiggle the PI tube, I get some some weird noises but they might be normal?
First thing I'm going to check are the inputs and check the solder joints for any broken or loose wires.
Then chopstick the rest of the amp and look for loose wires / bad solder joints.
Any other suggestions are welcome.
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