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PostPosted: Fri Aug 17, 2018 3:28 pm 
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Bottle Rocket

Joined: Sat Sep 17, 2016 4:23 pm
Posts: 3
Hi all-
Just started having an issue with my ROV25 combo and popping noise switching between channels 1/2. Both are set to the same wattage (25w) and it doesn't matter if I use the footswitch or the front panel switch to change channels. Amp also sounds a little noiser than normal with some slight buzzing and white-ish noise. Could I have a power tube going bad? All tubes look fine and I didn't notice any odd noise or microphonics tapping them. Only other thing I noticed is some variation in the buzz/white-ish noise if I move the speaker cable around some in the back - doesn't affect the popping though. Thanks!


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PostPosted: Mon Aug 20, 2018 6:24 pm 
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Mark IV
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Joined: Wed Sep 08, 2010 4:12 pm
Posts: 671
Location: Petaluma, California
snyder17315 wrote:
Hi all-
Just started having an issue with my ROV25 combo and popping noise switching between channels 1/2. Both are set to the same wattage (25w) and it doesn't matter if I use the footswitch or the front panel switch to change channels. Amp also sounds a little noiser than normal with some slight buzzing and white-ish noise. Could I have a power tube going bad? All tubes look fine and I didn't notice any odd noise or microphonics tapping them. Only other thing I noticed is some variation in the buzz/white-ish noise if I move the speaker cable around some in the back - doesn't affect the popping though. Thanks!



That is often the sign of a power tube heading for failure. Hope that helps...

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