Small percolating noises from my TA15

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alphasports
Mark I
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Small percolating noises from my TA15

Post by alphasports » Thu Nov 17, 2016 4:47 pm

Howdy all

I just went thru a Mesa factory repair for a bad cap on my Express 525, now my TA15 is making light background percolating noises (random sizzle, scratching etc). Not very dramatic but certainly not what I'd call quiet background hum. Now what? Failing preamp tube somewhere?

Cheers
Electrics: Collings City Limits Deluxe / PRS Mira (core Korina), CE24 (2006 original), Studio (2012 new)
Acoustics: Ovation 1778T Elite (underrated!)
Amps: Mesa TA-15 / Mesa ElectraDyne 1x12 Wide / Roland GA-112 / Genz Benz Diablo 60

bandit2013
Triple Recto
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Re: Small percolating noises from my TA15

Post by bandit2013 » Mon Nov 21, 2016 7:14 am

That would be my first assumption. Preamp tube. I would at least roll in a new tube starting at the beginning of the chain. EL-84 power tubes can do this too but not as common as a preamp tube. Hopefully that is all it is.

Dreamtheaterrules
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Re: Small percolating noises from my TA15

Post by Dreamtheaterrules » Tue Nov 22, 2016 1:01 am

+1. When I've had a tube fail slowly, that was decent description of what happened to my tone.

Or, if we were in Hawaii, I'd say, "Bubble, tiny bubbles..." :mrgreen:
Mesa Boogie Mark V, Mark V25, PRS Archon, PRS Custom 50

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elvis
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Re: Small percolating noises from my TA15

Post by elvis » Thu Dec 01, 2016 7:58 pm

Tubes are awful creatures. None of us would use them if they didn't sound and feel so freakin' awesome.

Always carry spares.
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Dreamtheaterrules
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Re: Small percolating noises from my TA15

Post by Dreamtheaterrules » Fri Dec 02, 2016 12:59 am

elvis wrote:None of us would use them if they didn't sound and feel so freakin' awesome.
ain't that the truth!
Mesa Boogie Mark V, Mark V25, PRS Archon, PRS Custom 50

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