Hi, I thought I'd share this unusual failure. I picked up a nice 18 month old LG with sound, no picture.
Expecting the worst case like damaged Y-main and buffers I first isolated the upper buffer with no change.
Then swapped around but left the lower buffer connected to the panel but no input from the Y-main.
Got a picture but the bottom was really behaving weird and messed plus I started to hear arcing and that dreaded component burning odour. It was comming from the very bottom and I'm thinking great, you just destroyed the panel. Maybe leaving that panel connected the bad buffer was not so smart.
Anyway removed the bottom buffer and what do I find? One very crispy cockroach and a hole burnt right through the board below the last buffer IC.
The person I got it from was pretty annoyed with LG as it was just out of wty and they would not offer any goodwill.
It appears to me that in this instance LG were not to blame but the cocky.
From what I can find this was a $1600 TV here in Australia when purchased.
Expecting the worst case like damaged Y-main and buffers I first isolated the upper buffer with no change.
Then swapped around but left the lower buffer connected to the panel but no input from the Y-main.
Got a picture but the bottom was really behaving weird and messed plus I started to hear arcing and that dreaded component burning odour. It was comming from the very bottom and I'm thinking great, you just destroyed the panel. Maybe leaving that panel connected the bad buffer was not so smart.
Anyway removed the bottom buffer and what do I find? One very crispy cockroach and a hole burnt right through the board below the last buffer IC.
The person I got it from was pretty annoyed with LG as it was just out of wty and they would not offer any goodwill.
It appears to me that in this instance LG were not to blame but the cocky.
From what I can find this was a $1600 TV here in Australia when purchased.
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