Question about LG Studioworks 570LE (White) 15.1 in. Flat Panel LCD Monitor

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H out transistor get short

The model no: of my LG TV is RF-21 FA20KV.
SMPS is ok.
found h out transistor get short circuited.
i removed transistor; make sure that all supporting components are normal..
insert a new transistor with a new LOT.
Switch on the system with disconnected the Motherboard from CRT etc.
heard "chick" sound and sound of the h out oscillation.
then make all connections . after switch on the system; with in three seconds hout transistor get again short cktd.

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SOURCE: lg 500g crt monitor problem


Try checking B+ coil , may be the coil have shorted .

Happy trying

Posted on Apr 10, 2008


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