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December 03, 2020, 06:39:03 PM

Author Topic: Crackling noise?  (Read 566 times)

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Offline mpeg2

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Crackling noise?
« on: March 31, 2018, 06:37:50 AM »
I've had my Smash for a while now - today noticed a faint crackling noise coming out of both channels during quiet passages - independent of the input source. It might be my imagination, but microphonics seem to be a bit more than in the past. My normal inclination would be to suspect the tubes & change them - but I can't seem to find a source for 4P1Ls.

Any suggestions on what to look at (or where to find tubes)?? I won't be able to do much for the next few weeks due to travel, but would like to get an idea what to attack when I get back.

TIA
Rich

Offline Paul Birkeland

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Re: Crackling noise?
« Reply #1 on: March 31, 2018, 07:04:20 AM »
There are gazillions of 4P1L tubes on eBay.
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline mpeg2

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Re: Crackling noise?
« Reply #2 on: March 31, 2018, 07:14:28 AM »
Thanks - I don't normally use ebay, so didn't look there.
I'll try this first...

Thanks...

Rich