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Old 09-07-2013, 02:15 PM
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wa2ise wa2ise is offline
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Join Date: Dec 2002
Location: USA
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I opened the back and pulled the circuit board. AFAICT, the HOT transistor isn't shorted, at least from emitter to collector. I measure 40 ohms both ways from emitter to base, after I pulled two wire jumpers that disconnect the emitter and the base from the rest of the circuit.. It's a 2SC5339 and I looked up the data sheet on line and it turns out it has a built in 45 ohm resistor between these points, so maybe it's not blown..

No cap looks by sight to be spilling its guts. And I tried resoldering the horiz output transformer terminals on the board, but the set still shuts down in a few seconds, as before.

A sticker on the HOT heatsink says: "serial number LE20210034 GP342". Other than that, I don't see any identifications.
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Last edited by wa2ise; 09-07-2013 at 02:57 PM. Reason: update
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