Re: Sad day.
Did you ever figure out where the smoke came from on the x amp?
The early models (pretty much all that were made in the 80s) had a major design flaw in the 15v power supply section that powered the opamps in the circuit. They used an antiquated design with under-spec parts that eventually overheat and burn up. I've owned 2 x100b heads from 84 & 87 and both had the problem.
I can't remember the website address but there is a site that talks about it and how to fix it properly, which I did mine. It's not really a DIY task so I'd recommend a tech doing it. Not sure what it would cost but I can guarantee most of the cost is labor 'cause the parts are very cheap. While you're at it, I'd have all the electrolytic caps replaced. After that it should be ready to rock again for years to come.
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