Hey everybody, its been quite some time since I've been on the forum but I am having a issue with my 03 Mazerati v2. The last couple times I've played through this amp it acts just fine and sounds great for about 10 minutes. After that it starts to hiss and the volume cuts out. I thought it was probably the power tubes because the last time I had a problem like this Nashville Amp Repair just put tubes in it and it been great for years and many gigs since then. After changing the tubes it worked for about ten minutes or so and the volume cut out again. This time I looked at the tubes and the 2 power tubes to the left, if you were to be facing the front of the amp, were extra bright and the 2 on the right of them were not lite up at all. Any ideas as to what could be going on would be great. I will be taking it to an amp tech but with the depth of knowledge here I may be able to give him a place to start looking or and idea possibly.
Post by premiumplus (Dave) on Jan 3, 2019 19:48:13 GMT -7
To find out if it's the tubes or the amp, take note of which side the power tubes run hot on, and then remove them and swap them with the two tubes from the other side. If the same tubes still get hot, in other words if the problem moves with the tubes, then you can safely assume it is those two tubes running hot on their own. If the problem stays in the same place in the amp, that is if the same tube sockets make the other tubes run hot, then you may very well have an amp problem. Hopefully the problem will follow the tubes, and a fresh quad will put you back in business. Let us know how it works out for you, good luck!
"Tone, tone, tone, tone. Is there a substitute?" -Dr.Z
That's a great idea Dave! Kinda upset I didn't think of that. Just like swapping spark plugs chasing a misfire. I'm going to give that a try when I get back home tomorrow, and yes I'll let you know how it goes. Thanks again!!
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roscoenyc: I have never in my life experienced tube rattle. That said, I've only been playing electric guitar for 49 years.
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