Hello all. I'm in need of some help.
I have a LG Plasma TV 50PC3DH that will not turn on. It died while watching a show when it blinked with a white screen two or three times before turning off. Now when I try to turn on the TV, it clicks like its trying but then, after about 3 seconds, it turns back off. No picture or light is shown while it's trying to turn on.
I opened the TV and noticed some bulging capacitors on the power board, so I sent the power board to get repaired. When I reinstalled the power board, the symptoms didn't change.
Next, I checked the resistance between the Vs and ground on the YSUS and the ZSUS boards and found a short on the ZSUS. I replaced the ZSUS board with a refurbished board. Still, the TV will not turn on.
I checked all the voltages on the connectors, and they all seem to be correct. I don't know what to check next or how to find the problem component. If anyone can please give me some advice on how to determine what the problem is, I would greatly appreciate it.
Attached is a visual of the tv circuitry.
I have a LG Plasma TV 50PC3DH that will not turn on. It died while watching a show when it blinked with a white screen two or three times before turning off. Now when I try to turn on the TV, it clicks like its trying but then, after about 3 seconds, it turns back off. No picture or light is shown while it's trying to turn on.
I opened the TV and noticed some bulging capacitors on the power board, so I sent the power board to get repaired. When I reinstalled the power board, the symptoms didn't change.
Next, I checked the resistance between the Vs and ground on the YSUS and the ZSUS boards and found a short on the ZSUS. I replaced the ZSUS board with a refurbished board. Still, the TV will not turn on.
I checked all the voltages on the connectors, and they all seem to be correct. I don't know what to check next or how to find the problem component. If anyone can please give me some advice on how to determine what the problem is, I would greatly appreciate it.
Attached is a visual of the tv circuitry.
Attached Files
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