ps50c450 horizontal lines

[wreksta]

I also have this come come in

can it be fixed please

[tom66]

Re: ps50c450 horizontal lines

You need to be more descriptive but in most cases horizontal or vertical fixed lines are not repairable on LCD or plasma displays. There are a few exceptions. The B450 and C450 are notorious for horizontal lines being panel failures.

[wreksta]

Re: ps50c450 horizontal lines

they are black mate and are fixed is it nothing to do with the buffer

[tom66]

Re: ps50c450 horizontal lines

Single pixel line, or solid bar?

[wreksta]

Re: ps50c450 horizontal lines

heres a video showing same problem

http://www.youtube.com/watch?v=sqHwU...ature=youtu.be
they are small horizontal lines at certain parts of the screen some in middle some at top and some nr bottom

[tom66]

Re: ps50c450 horizontal lines

Panel is defective then if it looks like that

[wreksta]

Re: ps50c450 horizontal lines

heres a picture showing these lines

[tom66]

Re: ps50c450 horizontal lines

Reseat the panel ribbons (on y-buffer) just in case but usually it's a panel problem.

[wreksta]

Re: ps50c450 horizontal lines

how t test y buffer hopefully may be that

[tom66]

Re: ps50c450 horizontal lines

You can't usually (except with a very fine probe and oscilloscope), the only way to be sure is swap the buffer.

Caution: Most buffers pulled from these newer cracked screen TVs are bad! (B450, C450 etc with single piece of glass panel.) Test any board before installation: http://www.youtube.com/watch?v=51SZsfH60EY

The above test can't be used to see if a buffer causes horizontal lines, but in 99% of cases it does not. The panel is bad almost always. It is a very common fault with these sets. If you want to try a buffer then good luck...