Question about Mitsubishi WD-52725 52". Rear Projection HDTV

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Blue lines We are getting random horizontal blue lines in the picture, mostly in 1080i, and when the picture we are watching is dark, like a night scene. This has just started. We've had the TV since 2005. Any thoughts?

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Posted on Dec 12, 2007


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Horizontal blue lines

If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

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You posted under GE 7-day random vacation timer.
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Horizontal blue lines with a slight blue wash in the screen

Its because of Over Voltage of Screen (G2) to Blue CRT.
Take off front lower cover (speaker grill) and unscrew board. There you will need to find Focus Block mounted having 6 control knobs. 3 knobs are for Focus control and 3 are for Screen volts control. Find Blue Screen control knob and turn is Counter Click Wise slightly until bluish shade disappear on screen including few blue horizontal lines.
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Have a 42" flat screen; the picture goes blank after two minutes each time after turning it on.

I have the horizontal line problem but I do get that random black screen issue. I called xbox support and they told me to change the settiong to 1080i (found under console settings/Display), so far I haven't had any issues.I don't have the horizontal line problem but I do get that random black screen issue. I called xbox support and they told me to change the settiong to 1080i (found under console settings/Display), so far I haven't had any issues.
And my problem is also resolved and its working fine.

Assistance by phone seven days a week.
1800 555 741

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problem is going to defective optical engine $920.00 for repair sounds about right if not cheap. the parts cost is most of that price. check sony website or call and see if they will pay the repair cost for you.

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We have many problems with loose or poorly seated cables and connectors on these units. Pull the back and reseat all the internal cables, especially the LVDS cable to the LCD control bd. If this does not correct the problem the main cause is a bad LCD control bd. or possible a defective main bd.

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1 Answer

Random, intermittant blue lines

Here's something that might also be useful. After you turn on the set, and get the regular red blinky lights, hold down the Device and Menu buttons together for about 5 seconds.
The Power light will start to flash in a two digit sequence.

For example, 3 flashes, then 7 flashes = 37.

Here are the error codes, and the corresponding problem:

12 = No error detected, check power supply.
32 = Lamp Cover is open.
33 = Air filter cover is open.
34 = Lamp abnormality
36 = Light Engine (DMD or Lamp Fan stopped)
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41 = Short is detected
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1 Answer

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Not to me, but it also depends on if you could do this yourself or not. And the area you are in sometimes is responsible for the cost being high.

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KDF-55XS955 Blue lines

This is an optical engine problem - it needs to be replaced - it will only get worse. Sony has had problems with the optical block and is extending the warranty for this problem. (this is a LCD projection tv - there is no convergence)

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