I recently picked up a LG 50PC3D-UD to repair. When I power the TV on, I hear the relays click, the green led on the front blinks 3 times and then goes back to red. I tried searching around a bit and found that these units have issues with the 10v 3300uf caps on the power board. All the caps look fine to me, no obvious bulging or leaking, but I replaced them anyway. The TV still wont power on fully. I found some LEDs that look like they may be error codes, and I included a picture of them. I also noticed a green and red LED under the shield on the tuner. I also tested all the pins on the p801,802, and 803 connectors. All the voltages were fine, except for the 3.3v pins, there was never any power on those pins.
Not sure if its a problem or not, but the two green thermistors next to the 2 black relays on the power board are closed at room temperature. This means that they are shorting the two load pins on one of the relays which seems like odd behavior to me, but it may serve a purpose I am not aware of.
I found what appears to be a service manual, but I am not sure how to follow it to diagnose these problems.
http://www.scribd.com/doc/7580885/LG...raining-Manual
Has anyone here worked on these sets before? I'm new to the world of plasmas and I don't really know where to proceed from here.
The pictures are too big to upload here, so I put them on google Picasa:
http://picasaweb.google.com/joshuabu...eat=directlink
Thanks in advance,
Not sure if its a problem or not, but the two green thermistors next to the 2 black relays on the power board are closed at room temperature. This means that they are shorting the two load pins on one of the relays which seems like odd behavior to me, but it may serve a purpose I am not aware of.
I found what appears to be a service manual, but I am not sure how to follow it to diagnose these problems.
http://www.scribd.com/doc/7580885/LG...raining-Manual
Has anyone here worked on these sets before? I'm new to the world of plasmas and I don't really know where to proceed from here.
The pictures are too big to upload here, so I put them on google Picasa:
http://picasaweb.google.com/joshuabu...eat=directlink
Thanks in advance,
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