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Discussion Forum for Mesa Boogie Products
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PostPosted: Sun Feb 04, 2018 10:45 am 
Bottle Rocket

Joined: Fri Sep 16, 2016 8:13 am
Posts: 16
Hi, I've a Mesa Nomad Head 100. After 1h of playing the amp started to make a noise (like a ship, a sort of "whoooooooom") and I switched off the standby getting a "pop" even if the volume was set to 0.
I tryied to turn on again but the sound was back again.. then I watched behind and saw two tubes that were a kind of overheated.
I though that were broke tubes and changed with another quartet that I have. Nothing, the first two positions from left get overheated.
What it can be? I made a video so You can see what happens.
Cannot play with this (I don't want to broke more..) and there's the whoooom that makes problems.
Amp got nothing mods (except mud mod, serial-parallel mod and reverb mod), didn't get shock or rain etc.
It had a problem with pilot light solved (it was a path broken).

I didn't used it from 2 weeks but it was in my bedroom.. and I used it 1h today without problems. It was perfect.
This is the video..

Thanks all and sorry for my bad english (I'm italian).

PostPosted: Thu Feb 15, 2018 1:51 pm 
Donating Member
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Joined: Mon Jan 01, 2007 6:52 am
Posts: 3080
Location: New Haven, CT U.S.A.
Are you referring to the blue glow inside the tubes?


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