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Old 01-08-2007, 07:17 PM
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markthefixer markthefixer is offline
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Join Date: Apr 2005
Location: Bensenville,Illinois
Posts: 120
I'M BAAAACK.......... as promised

It's up and running

As promised here are the readings of the MX0841AB-F dual npn transistor (Sony 8-279-041-12 )
the bad one reads 0.000v forward drop all the way round, and 0.4 ohms on a genuine ohmmeter.

The new part reads as: with the leads arranged left to right:
(r is red (+) meter lead, b is black (-) meter lead)
e.b.c...c.e.b....
r.b.................OL
..b.r...............OL
b.r.................537
..r.b...............474
r...b...............OL
b...r...............OL
.....................
.........r.b........OL
.........b.r........OL
.........b...r......475
...........b.r......538
.........r....b.....OL
...........r..b.....OL

thus it reads as a pair of normal NPN transistors

and for the Horizontal Output Transistor, it reads normal now too.

So the power supply dual transistor, the hot and that .1 ohm "fusible" resistor were replaced, with the failure being caused by insufficient heat sink grease on the H.O.T. resulting in the the lack of good thermal contact with the heat sink.

Thank You for the assist folks!!

Thus one curbside find, of a 1999 Sony 32" TV on New Years Eve, LIVES AGAIN!!!!
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