On 2005-11-13, Charles Schuler wrote:

B-E short may be OK if it's driven by a transformer. It's C-E short
that's guaranteed dead.

Be sure to understand that Sam is talking about in-circuit
ohmmeter testing. Out of circuit, B-E short is fatal.

I'm not an EE, but I had figured that much. :-) Thanks. If I
can't get the schematics, I guess I'll have to desolder the
transistor to make sure.

The 2SC5570 is spec'd for voltages in the kV range ; that makes
it a good candidate for arcing. There were long "whiskers" of
dust on the leads. Could an arc have developed that way ?
Perhaps the replacement could use some heat shrink tubing on its
leads...

--
André Majorel URL:http://www.teaser.fr/~amajorel/
It's a good life, bowing to a tyrant.