Hello, Just trying to repair my sons LCD TV which stopped working. Samsung T370HW03
Found the 3.15 Amp fuse blown ( FM802S ).
Nothing obvious like bulged electrolytics or toasted R's or burnt tracks.
Did a recheck with a 500 Watt lamp in place of fuse FM802S to limit current to 2.5 Amps, something lit up on the board which I captured on video camera.
That appeared it was Q1821 mosfet.
Testing the mosfets and they appear shorted out on the diode tester.
There are SMD R's on the other side of the board which look alright, and I have never removed those as they are so tiny.
I have ordered some new mosfets of the same type, anyone else had a similar issue and what other parts could have caused the fault or is it just aged components.
Thanks
Mosfet details. Q1820 and 1821 are the same.
f (Fairchild) 1K32DC
FDPF
7N50U
Found the 3.15 Amp fuse blown ( FM802S ).
Nothing obvious like bulged electrolytics or toasted R's or burnt tracks.
Did a recheck with a 500 Watt lamp in place of fuse FM802S to limit current to 2.5 Amps, something lit up on the board which I captured on video camera.
That appeared it was Q1821 mosfet.
Testing the mosfets and they appear shorted out on the diode tester.
There are SMD R's on the other side of the board which look alright, and I have never removed those as they are so tiny.
I have ordered some new mosfets of the same type, anyone else had a similar issue and what other parts could have caused the fault or is it just aged components.
Thanks
Mosfet details. Q1820 and 1821 are the same.
f (Fairchild) 1K32DC
FDPF
7N50U
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