I have a Polaroid 40" TLX-04011C. The screen resolution is fine except for about a 4" area along the right side from top to bottom. This area is lighter than the rest of the screen. The picture is still able to be seen but considerably lighter in contrast. There is also a small black line in the upper left corner that curves from the top of the screen to the left side. There is a small black line like this along the right side of the screen also. It looks like a seal has come loose behind the screen. I do not know what wither of these problems are or if they can be repaired. Any help would be appreciated. Thank you.

This does not sound like a power board problem at all. This is either a defect in your LCD panel or in the main video board.


Honestly though, by your description it sounds like there's a small crack in your screen. Maybe I'm just not understanding your description, but small black lines and a change in brightness on one side of the screen usually indicates some sort of damage to the panel. It most likely will be better to live with this problem.


Alternatively, your panel may have shifted inside the casing, but I can't imagine that happening by itself, with the casing sustaining some damage.


Either way, if you open it up and find bad caps on the power board (you might find some even though that's not causing your problem) you should replace them as a preventative measure, but you should also look at the panel itself and make sure it hasn't been damaged in some way.


Anyways, good luck, and all the best. This does not sound like a power board problem at all. This is either a defect in your LCD panel or in the main video board. Honestly though, by your description it sounds like there's a small crack in your screen. Maybe I'm just not understanding your description, but small black lines and a change in brightness on one side of the screen usually indicates some sort of damage to the panel. It most likely will be better to live with this problem. Alternatively, your panel may have shifted inside the casing, but I can't imagine that happening by itself, with the casing sustaining some damage. Either way, if you open it up and find bad caps on the power board (you might find some even though that's not causing your problem) you should replace them as a preventative measure, but you should also look at the panel itself and make sure it hasn't been damaged in some way. Anyways, good luck, and all the best.

Your problem is in the signal board. There are some capacitors in the signal board that are bad. You describe exactly what bad capacitors can do to a flat panel LCD TV. Once, again you will need a capacitor checker to find these. A weak or bad cap will leave lighter shades as well as black bars on the screen. Please be careful as not to tear the traces on the PCB when removing a cap. Be careful and have lots of patience! Your problem is in the signal board. There are some capacitors in the signal board that are bad. You describe exactly what bad capacitors can do to a flat panel LCD TV. Once, again you will need a capacitor checker to find these. A weak or bad cap will leave lighter shades as well as black bars on the screen. Please be careful as not to tear the traces on the PCB when removing a cap. Be careful and have lots of patience!