Posted by Thermionic [ 70.173.82.75 ] on August 18, 2005 at 02:35:39:
In Reply to: Re: One output transformer hotter than the other posted by Wayne Parham on August 17, 2005 at 23:28:57:
Sounds almost like you have some ultrasonic oscillations. They'll make an OPT get super hot. But, I guess that's really unlikely, as that amp has grid stopper resistors thicker than flies everywhere, and if was an ultrasonic oscillation that bad the plates would probably be glowing red.
Mant times, an ultrasonic oscillation will modulate other frequencies, and you'll have a weird audible hum along with it, or even other oscillations at audible frequencies.
Thermionic 
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