[Amps] TL-922A - Loud Pop, Blown Fuses

[Vic Rosenthal]

Mike Clarson wrote:

> Don't know if the TL-922A has similar problems, but my SB-220 has exhibited
> evidence of parasitic oscillations, and, when that happens, one gets the
> ".22 Caliber" pop. It is unpredictable, and, it can take out a tube. It
> usually happens while tuning, but sometimes it will just happen at random. I
> have sidelined the amp to fix it over the winter. The last time, it took out
> the meter resistor! 

How can you tell that the pop was caused by a parasitic oscillation and not from 
a gassy tube?

-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco