Quote:
Originally Posted by Alex KL-1
Q502 indeed measure low ohm between E-B junction at circuit due to trafo coupling, and some models even out of circuit (some have internal R). But B-C junction needs to measure pristine.
Another suspicious: IC601 (+B reg/audio), C527 and/or FBT. Or symply a bad cap in the line...
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Ditto
Most HOT's have a built in resistor E-B and damper diode E-C.
When they go they dead short E-C 99% of the time.
Look behind the HOT for a small disc cap, they often crack & burn.
IIRC its a 2200 pf 2KV. ?? Common on others too.
The reg / audio amp IC also likes to get cold joints on it.
Zeno