I originally posted this to an older thread but decided to start a new thread since this is for a different TV. I am having a problem with two LG 50 inch plasma TVs (50PA6500) and am hoping someone can help. One is my sisters TV and the other is mine (that I broke while trying to fix hers :-( )
Both have the same power and Y-Sus boards (same part number and numbers on the white stickers). Power boards are fine. However, after some troubleshooting I have found that the Y-Sus boards seem to be the problem. The Y-Sus boards are EAX64282201/EBR73763201. I've tested the resistors using a DMM and replaced one on one of the boards. However, both boards have faulty ceramic capacitors in the exact same locations. I've read that ceramic capacitors rarely go bad, so I'm wondering about this. I have checked them using the MESR-100 ESR Meter and they show up as overflow. The faulty ones are 4 disc shape ceramic capacitors and one blue radial style capacitor.
https://imagebin.ca/v/3XmGxBU7vZIK
https://imagebin.ca/v/3XmHN69v0xJk
Four of the five disc shaped capacitors in the 1st picture are bad, and the blue radial style bad capacitor is nearest to the black heat sink in the 2nd picture. The other two radial style capacitors in the 2nd picture are good.
The symptoms of one TV is that it will turn off 1 second after turning it on. The symptom of the 2nd TV is that it will turn on, there is humming coming from the Y-Sus board, and a faint clicking sound near the top of the board. It will stay on but there is no picture.
Does this sound plausible that this many ceramic capacitors have gone bad? I am new to trying to fix things/troubleshooting so please forgive any errors in terminology that I've used. I have also determined that in one of the TVS the Y buffer lower board is bad too.
Thank you.
Both have the same power and Y-Sus boards (same part number and numbers on the white stickers). Power boards are fine. However, after some troubleshooting I have found that the Y-Sus boards seem to be the problem. The Y-Sus boards are EAX64282201/EBR73763201. I've tested the resistors using a DMM and replaced one on one of the boards. However, both boards have faulty ceramic capacitors in the exact same locations. I've read that ceramic capacitors rarely go bad, so I'm wondering about this. I have checked them using the MESR-100 ESR Meter and they show up as overflow. The faulty ones are 4 disc shape ceramic capacitors and one blue radial style capacitor.
https://imagebin.ca/v/3XmGxBU7vZIK
https://imagebin.ca/v/3XmHN69v0xJk
Four of the five disc shaped capacitors in the 1st picture are bad, and the blue radial style bad capacitor is nearest to the black heat sink in the 2nd picture. The other two radial style capacitors in the 2nd picture are good.
The symptoms of one TV is that it will turn off 1 second after turning it on. The symptom of the 2nd TV is that it will turn on, there is humming coming from the Y-Sus board, and a faint clicking sound near the top of the board. It will stay on but there is no picture.
Does this sound plausible that this many ceramic capacitors have gone bad? I am new to trying to fix things/troubleshooting so please forgive any errors in terminology that I've used. I have also determined that in one of the TVS the Y buffer lower board is bad too.
Thank you.
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