Dead Sony KV-T25SZ8 TV
On Mar 13, 1:11 am, "Phil Allison" wrote:
There is an inbuilt resistor from B to E in nearly all HOTs of 20 ohms or
less.
**************.
Most horiz output internal resistors are between 25 and 50 ohms.
Besides, 20 ohms isn't 5.7ohms. In circuit, E to B reads an ohm or
under as the secondary of the horiz driver transformer is directly
across it.. Out of circuit, a reading of 5.7 ohms E to B is a bad
transistor. It's not common in horizontal outputs, but an E to B
short does happen.
On Mar 13, 1:11 am, "Phil Allison" wrote:
** Probably normal.
**** More likely a stupid answer.
A common problem in Sonys is a bad solder connection on the secondary
of the horiz driver transformer, so instead of reading under an ohm,
the cold solder causes a reading of several ohms up to the internal
resistor value. Simply resoldering the horiz driver will restore
proper reading if the output is otherwise OK.
Twit.
Hey, this is fun!!!!!
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