Question about Peavey Cs 4080hz Power Amplifier
Ouch! That is an expensive one... a little over $7 here:
The BAD news is that USUALLY other things go at same time or cause the failure. If you miss replacing a second part that is degraded, then you blow out the new one. Pay particular attention to the gate limiting Zener diode... it may be blown open and would result in instant failure again. Also ALL parts associated with the gate drive of that transistor.
The circuitry for this amp is rather complicated and a lot of other parts need to be checked for damage before putting full power on the unit again.
When firing this up, put a 250 Watt lamp in series with the power input to act as a resetable fuse to avoid blowing out the part again... It is good to use a variac to slowly bring up the voltage at first. If the lamp stays lit, better keep looking for bad parts.
Posted on Sep 06, 2010
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Posted on Jan 02, 2017
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