Re: LG 50PM680 No picture, sound working
Oh, I think I forgot to update the thread, but picture went gone shortly after.
I'm not really sure what caused it, perhaps bad handling of components or maybe some type of short while measuring, no clue.
That's why I bought some buffers and y-sus....
Tom3dJay
Member
Last Activity: 10-28-2015, 12:08 PM
Joined: 10-31-2014
Location: Prague
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Re: LG 50PM680 No picture, sound working
bump
The led light on main board gives long-short -- long-short signal.Leave a comment:
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Re: LG 50PM680 No picture, sound working
Hey, guys, small update, I just bought y sus and both buffer boards!
Unfortunately, this didn't fix the problem completely.
Now I'm getting very quick picture blink accompanied with the with classical switch and buzz sound, but buzzing sound goes away at the same time that picture does.
Any idea what's wrong?Leave a comment:
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Re: LG 50PM680 No picture, sound working
Alright, that makes sense actually, the upper gives me close to zero both ways on couple pins.
This is the resistance on the lower buffer. Upper gives me half of that on all pins, except for couple pins on top, which gives zero both was....Leave a comment:
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Re: LG 50PM680 No picture, sound working
Small update:
I measured the resistance on the upper buffer, and found out that only couple pins give me any good reading, so I guess ICs are dead.
Another problem is, the lower part of the picture stopped working too. I suspect it may be some mistake on my part when I was trying to unplug the y-sus (while powered off). Possibly even mechanical damage, but I couldn't find anything wrong.
It's really difficult to get the lower buffer unplugged, so I measured it while still plugged to ribbons panel and...Leave a comment:
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Re: LG 50PM680 No picture, sound working
Thanks a lot boys, I'll get back to you once I check for short on the upper buffer.Leave a comment:
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Re: LG 50PM680 No picture, sound working
Thanks for swift reply. Definitely a good vid, but I'll have to borrow the multimeter later, since don't have one.
What if the buffer tests okay?
This is one of LG series sets with razor thin edge, potentially suffering from ribbon damage due to design flaw....Leave a comment:
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LG 50PM680 No picture, sound working
Hello guys, I'm new to your forum, but I've done some extensive reading already.
I'll cut straight do the point here:
My set gives me no picture, sound is working, but If I remove upper buffer completely, I'll get picture on the lower half of the screen.
Part number for the upper buffer is EAX64300101, it's used in other LG plasma sets too.
There's only one visible problem with the top buffer: IC chips got slight "dark" mark in the corner, but it doesn't smell burned at all and I've seen couple boards online with this type of darker corner, so I don't... -
Re: New Members - please post your introductions here
Hey there guys, I'm trying to learn something new, because local technicians are not reliable.Leave a comment:
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