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TV Tech1
TV Tech1, Technician
Category: TV
Satisfied Customers: 5312
Experience:  30 Years experience. Authorized Warranty servicer.
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I have a 5 year old LG plasma 50PK950. 2 blacl pars on

Customer Question

I have a 5 year old LG plasma 50PK950. 2 blacl pars on extreme right side of screen. They appear intermittently, sometimes opague, or color streaks. they flicker sometimes disappear then reappear. I cleaned electronic ribbons and reseated along base of screen. Does this mean the buffer(s) needs to be replaced, or is the flat screen irreparable. if it is repairable, what will it cost and is it worth repairing?
Submitted: 12 months ago.
Category: TV
Expert:  TV Tech1 replied 12 months ago.

It could be the ribbon cable...but it's worth trying the bottom left buffer.

http://www.shopjimmy.com/lg-ebr63522201-bottom-left-xr-buffer-board.htm

If the ribbon on the panel is at fault, then you need the panel -

https://www.encompassparts.com/item/8229211/LG/EAJ60716464/Pdp,module-fullhd

There are 3 model variations on your TV, if you choose to go with the panel, you have to get the extra letters at the end of your model number -

https://www.encompassparts.com/model/ZEN50PK950/_/_/LG/50PK950/50PK950

then put PDP in the search box for price and availability.

Customer: replied 12 months ago.
Can I order the ribbon ,then buffer board/ it does not pay to replace panel, I might as well get a new TV. If it's intermittent, would that not indicate the panel is good?
Expert:  TV Tech1 replied 12 months ago.

That would indicate the panel is good. But the ribbon is fused onto the panel, and if it's cracked it could cause intermittent bars. If you want to test that, fire up the TV, use a helper to watch it, then go to the back of the TV and stroke those ribbon cables just below where the bars show up. I use a toothpick to stroke the cables and apply light pressure to deflect the cables, or move them. The picture should be good if they're ok.