TV repair anyone?

Ok have a 50" Samsung plasma TV that I'd about 4-5 years old

In the last week noticed a thin black line across the top of the screen down about 5" from the top

Have googled it and found this to be a common problem with samsung sets

Some say they started with one then more appeared. Some claim Samsung is no help for those out of warranty and estimated 600-800 to repair (HELLO THAT IS NEW TV PRICE)

So is there any fix for this without price for new set?

Read that on some the ribbon cable on the back can be removed and reset might fix it. Any truth to this?

Or just wait till it gets worse and buy a new set, which will not be another samsung

Seen a 60" LED LG on sale in flier today for $699

But damn only last 5 years.

Thanks for looking