I just put this model on my bench this week, a LG 42LC7D-UK. I replaced all the caps on the SMPS, and stuck a 6.8ohm/2W resistor in for R109, it was a thermo fuse/resistor. Now this unit is dark, not even red/green led on front... I'm going to mess with pulling the PWR_ON high with some batteries and pull and check all the MOSFET's on the power board next. I've got clean power through the second iso-transformer, and 165Vdc off of rectifier... There does not seem to be any power on any of the outgoing connectors.
I've gotten the service manuals for the -AB and -UB versions but can't seem to come up with the one for this -UK. What I really would like is the schematic and parts list for the power board if anyone knows where it could be had.
Any pointers would be greatly appreciated, thanks!
I've gotten the service manuals for the -AB and -UB versions but can't seem to come up with the one for this -UK. What I really would like is the schematic and parts list for the power board if anyone knows where it could be had.
Any pointers would be greatly appreciated, thanks!
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