Question about Hitachi 50V500 50 in. HD-Ready LCD Television

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Screen goes White

My screen goes Blue / White and then back to the picture ??? Did not start untill a TV company put a new Optical Engine in.


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Yes and this sounds like they might of made a little mistake, but to you it's Major. It seems you need what is called a Flex Converter. If your set is V500 the part # is CS00771, and if it's V500A then part # is CS00772 for more info on this you can visit ctechnicians.com

Posted on Jan 06, 2008

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Posted on Jan 02, 2017

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Screen problems on a sony 60" widescreen tv


if some area of the screen even with the color set at zero is green go to an unused video input and look---this model is well known for red green or blue discoloration of what appears to to be the screen but is actually the optical light engine which projects the picture into a mirror which projects it on the screen.

attached is a typical light engine, note the round lens to the left , that is the optical unit that projects the picture into the mirror at the rear of the set which puts it on the screen----the engine is the most expensive part in the set so, .........

12_9_2012_1_26_58_am.jpg

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1 Answer

My tv screen when on turns yellow then after a while it will switch back to normal colors what can be wrong with it....


Televisions covered: all Projection with yellow picture, but not Projection TVs with a yellowish tint surrounding objects in a nearly normal picture.

Yellow = red + green
normal picture = red + blue + green (RGB). See illustration.

12_27_2011_5_00_56_am.png

Fig. 1 Additive color mixing in an RGB monitor, or RGB Projection TV.

The circuitry powering your blue output, or the blue light engine itself is starting to fail.

Operating Theory:

The lamp module shines a bright light into the optical unit; there are a series of lens and baffles, and at the top of the light engine, a lens puts the picture into a mirror which is reflected onto the screen; All video and color is processed thru the light engine. Blue most commonly fails first, leaving a yellow picture.

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1 Answer

Have a blue streak down middle of screen. all


I have exact problem. Is anybody know how to fix it? tv is 4 years old

Jul 15, 2010 | Hitachi UltraVision CineForm 55VG825 55"...

1 Answer

Too much yellow does not adjust with normal drop screen adjustments. can i adjust the light beams.on my philips 50"


Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} 1. Turn the green screen control on the Focus Block until retrace lines appear and gradually turn it back
Until the point where you can see the retrace line disappears, just before cutoff.
2. Turn the red screen control on the Focus Block until retrace lines appear and gradually turn it back
Until the point where you can see the retrace line disappears, just before cutoff.
3. Turn the blue screen control on the Focus Block until retrace lines appear and gradually turn it back
until the point where you can see the retrace line disappears, just before cutoff.
4. If the screen still appears too bright after proper G-2 adjustment, you need to adjust the sub-bright adjustment in the service menu
control down until screen cut-off. (Service data Range is usually 21 to 25 in the Service menu, for Sony sets you first go to category "MCP2", & then adjustment item 01( "SBRT")= subright.
For electrical the focus, put on the screen a clear picture of your choice thru an input of the TV set from a DVD, then pause the playback of the DVD Look into each color and rock that color focus control back and forth (turn the control one way then the other way slowing down as the picture goes into the best focus. till the picture looks sharp do each color till they all look in focus. NOTE: it is best to look into each color tube to achieve the best electrical focus. For optical focus please follow the manual lens adjustment in the sets service manual
By Larry Dillon

Aug 27, 2009 | Philips 50P8341 50" Rear Projection...

1 Answer

Lines, then no picture, then turns off


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2 Answers

No picture


Seems like the bulb needs replacing.....

May 28, 2009 | InFocus ScreenPlay 61" Rear Projection...

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Kf-42610 blue hue and blue dots on screen


Hi Guys

The Blue dots or discolouration you are seeing is due too the Blue LCD screen having cracked from excessive heat. This normally happens when you have a power failure while the Television was on. This obviously because the Blue LCD sits next to the lamp - the main cause of heat. The correct part number on the 60" is A-1086-952-A. It is very, very ,expensive.

Sorry to have been the bearer of bad news. Good luck : )

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