On the right side of the TV about 12 inchies in I have what looks like a water mark that runs from top to bottom and is about 1 inch wide, and on the right side of this it appears that the color is a little differnt. If something is in HD sometimes its hard to see the line, but it is still there.
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Re: Water mark on my Magnavox 42MF521D/37 LCD
It sounds like there is a defect in the screen. Without seeing this, it is very difficult to properly determine anything. If this is bothering you, find out who in your area is the authorized service rep for your set. Call them in to check it out for you. At least you will get the proper answer.
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There is no invertor board on a plasma tv. The fault is the X address buffer board. This is located on the bottom of the screen and runs horizontally the whole width of the screen. If you remove the heatsink plate that covers the x address boards and you need to look at the screen ribbon at the same position as where the bar is (in the middle).Vary gently lift the Xbuffer ribbon lock and gently take out the ribbon.Clean the contacts very carefully with a fibre pen or an electrical cleaning fluid.Insert ribbon back and heatsink and check.Here is a picture of the board and ribbon
a 1 inch bar is associates with 1 ribbon fault. So if the bar was 3 inches in from the left of the screen, the faulty ribbon will be 3 inches in from the right working from behind the TV. If cleaning dont cure the fault, then the Buffer IC will be blown and order a new centre buffer board (you can buy off Ebay)
Hello Depending how wide the line is their could be two possible causes.
I have two questions for you.
1. How wide is the line.
2. Does it run from top of screen to bottom of screen?
If the line is thin a single strait line then it is possible the PDP has gone Bad (Panel). (Screen). The screen will to be replaced.
If the line is at least 2 or more inches wide then its a buffer board which can be replaced. LG calls this board Hand insert Boards or display driver boards..