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I read this post a few days ago, with no knowledge that yesterday my roommate bought the combo version of this amp off of CL for $200. So weird I haven't thought or seen anything about this amp in damn near 5 years, and bam! twice in two days. It sounded really good and it is very LOUD. The input jack had to get cleaned because it was doing this weird volume fluctuation thing, and than something horrible happened. It had this weird "ring modulation/octave thing that went along with the note. I tried running the FX to another amp....preamp section seems fine. I ran the ext. speaker, it was doing the same thing ring mod oct. weirdness so this rules out the speakers getting blown. The problem is definitely in the power section of the amp. I confirmed this by plugging the guitar into the FX return, and the problem still kept happening. when a SS power section does this, what is happening? is it a partially burnt cap, resistor, or transistor? Maybe the transformer? Has anything happened like this to any of you?
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