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Old 01-13-2013, 06:48 PM   #1
ktullu98
I like it Heavy
 
Join Date: Mar 2007
Location: Michigan
Bad Tubes?

I bought a used Mesa Boogie Roadster last year. Never asked how new the tubes are. I have a GT10 going through the effects loop. I was playing a bit today and the whole amp got quiter, distortion and clean channels were real low all the sudden. After a few min it kicked back in. Is this the symptom of a tube going bad?
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Old 01-13-2013, 08:19 PM   #2
jjbarnes
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Join Date: Jul 2011
Possibly. It could also be a cold solder joint. Since it's mesa boogie I would reccommend not opening it up and taking it to a qualified and certified tech first.
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Old 01-13-2013, 08:32 PM   #3
guy_tebache
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Join Date: Oct 2007
Location: Australia
definitely get it checked out by a pro. A couple of months back my marshall had similar symptoms at a gig. Everyone I talked to said it sounded like the power valves were dead. I took it to an authorised repairer and it turned out to be a faulty plate resistor. I could have spent lots of time and money finding that out if I hadnt just taken it to them.
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