Question about Proscan PS50670 50" Rear Projection Television

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I just have a line that runs across my tv

I just have a line going across my screen and it looks like it may be rolling i think that my child got into the sevice menu and changed something is there any thing i can do?

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Re: i just have a line that runs across my tv

This could be a problem in your vertical circuit. you could try unplugging the set for about 1/2 hour and see if the set re-set's itself.

Posted on Jun 08, 2006

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Limes across screen when first turned on, by turning off and on sometimes fixes it, what could cause that problem?

If the lines are colored or even look 3d it is a convergence problem--if other lines it will depend on what they look like and what the model number is.

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I have a Samsung DLP HLN 5065W and recently the TV started to get Horizontal Lines in it with a 2 inch black horizontal line across the TV and the bottom half you could see the picture and the top half...

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Mitsubishi TV had horizontal lines across the screen and rolls up

ONE: Yes, the speaker mounted close/near to the set can be a cause of mischief; please move it further away and see if that helps clear up the problem. But, you must keep it away for several days before you will know for sure because it takes some time to degauss all the internal parts that may have become corrupted by the magnets in the speaker.

TWO: Yes, any set can be repaired the question is cost and wisdom. Old sets are sometimes not worthy of the repair simply because of the likelyhood that another failure will follow soon after. A big screen always invokes a repair charge of $200 and up. After a few of these you will wish you had put all the money into a new set!

THREE: The lines are most likely a problem in the vertical blanking circuits of the set. These are horizontal retrace lines that are supposed to be blanked out during vertical retrace of the raster. Think of it as a paintbrush that scans across the screen painting thin lines and when you get to the bottom of the screen it goes quickly back to the top, but during that time the horizontal, which is many times faster, has made several sweeps; so it must be blanked out during the retrace. The repair involves finding the guilty parts and replacing them. Usually this repair runs over the $200 somewhat.

FOUR: Prior to calling in a service tech try a hard reset to see if that will recover any of the circuit degradations. Merely unplug the power cord and leave unplugged for 4 hours or more. It may help. Or, it may not help; but worth a try since is won't cost you anything.

If the set is over 5 or 6 years of age it probably is not a condidate for any expensive repair. On the other hand, it is a Toshiba - and they make a fine set.

Hope this helps. Let me know if you have further thoughts.

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