Question about Toshiba 53H71 53 in. Rear Projection Television

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Lines on the screen

Having about 10 lines running diagonally down the screen and flickering. Can see the picture fine, but these lines are annoying. Any fixes that a non tech person could undertake? Thanks

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Re: Lines on the screen

I have a samsung rear projection , and it has red lines going across the screen. i put it in the back of my cuboard and went out to buty a new tv . now a few months on i got it back out to have a play with it and i coverd up the red bulb with something fireproof and now the picture is great again just that there is no red anything that is red looks a bit darker. its not great but a least its some use now and i use it in my bedroom. it mite not be much help but a least i dont have to keep it in a cuboard anymore.

Posted on Mar 28, 2007

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I have a toshiba 46h84 the picture is very light and lines all across the screen what could this be?

Possible screen controls in the set are up too high---if you turn picture and brightness to zero does the screen get full black?

screens set too high would give diagonal faint trace lines in the picture.

These sets also should get a annual cleaning of the lens and sometimes the mirror inside= if this is the case the picture will usually look darker and dull ----this will not affect lines in picture.

the lens are easy to clean but other actions depend on what your response is to the above information.

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Picture was fine, then lines diagonally, now light

Projection sets have two very common problems outlined below.

The first common problem is convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. The TV can also shut down when the convergence starts to fail.

Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith, RCA and others.

You can more info and a DIY convergenece repair kit with instructions from TV Repair Kits using the link at the end of this article.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture


You can see some more examples and find a fix using this link on Fixya

Oct 10, 2009 | Mitsubishi WS-55909 55" Rear Projection...

1 Answer

Diagonal colored lines run through the screen

Replace Both of your convergence ICs STK392-570 ICs will have Part number on them use same as old ones call 1-800-628-1118 MATS for parts.

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Sony 65 inch screen tv

The lines you saw, i;m sure they are the ones called retrace lines but know the failure could be located on the red CRT board. Most likely the video amplifier is defective and not necessarily the CRT.
What is the model number of your TV?

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1 Answer

Faint diagonal lines in t.v.

try turning down screen controls. turn up until you see the lines and then back off until they dissappear...easy as that! john

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