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LG 42 PN4500 abnormal picture

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tv tony:
Doesn't quite look Z-sus to me. Hard to tell from camera shots but it looks to have plenty of brightness to it.

P.R.Gore:
I throughly checked Zsus board but could not find any def
ective igbt or fet,I also I tried by replacment of electrolytic
Capacitors. But problem remains same.

downunder:

Might be time to move to the Y-SUS. Do Vs and Va match the values printed on the panel label?

On the Y-SUS check D515 and fuse FS501, and resolder the adjacent transformer.                                Bruce

P.R.Gore:
Thanks Bruce,
This set is still pending at my workshop, I will check as per your suggestion & revert.
P R Gore

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