Question about Mitsubishi WD52527 52" Projection HDTV

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Have a blue spot on the screen. started just

Have a blue spot on the screen. started just before the lamp went out. replaced the lamp but the blue spot is still there

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Hi,that's an issue with the light engine.Basically there's 3 chips blue,green and red they create the image on the tv ,when they start to fail you'll get those spots all over, mostly in the corners.God bless you!

Posted on Oct 05, 2009

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techman007
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SOURCE: Hitatchi 52" rear projection TV has blue spot in middle of screen

Hello :
I suggest u retrace you the steps u took to replace your lamp make sure no foriegn objects got on the prism where the light shines throung the optics engine, if you remove the lamp compartment througly. If you had a perfect picture prior to replacing the lamp, then retracing your steps you might find something that does not belone. One final note: Did you purchase the right lamp 120watts anything higher than this wattage could damage your optics engine. I suggest never vacuuming the compartment because particals fly around from the suction and could get on the glass of the color wheel asembly.

Posted on Sep 25, 2009

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I have a sony kds 55A2000 and my lamp went out so i replaced it. and it startes up fan goes on and off . and tv shuts down light still blinks red? My optical block is getting a light green yellow tint but...


Lamp Fan should not cut off and on it should run at all times when TV is Turned on.Lamp Fan is designed to run when set is turned on to Keep Lamp Cool otherwise Lamp will burn up.
Yes Bad optical unit block could also cause set to shut down.But most of them will Play but with Dots,Green yellow tinit or Big blue Spots

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I just recently changed my lamp in my hitachi 50 VF 820 and the screen has a large blue spot on it. I have done it before once or twice and all went well. Did I possibly put the bulb in incorrectly or is...


No. If the set turns on and you have a picture, the lamp is installed properly. Most of the time the optical block is the issue. The lamp shines directly into it. If the picture was good before the lamp was replaced, it is possible that that replacing the lamp might have dislodged some micro dust build up internal to the optical block and it landed in a concentrated area causing the red and green lcd panels not to pass light through as bright as the blue giving you a blue spot. Unfortunately the optical blocks are not designed to be taken apart to clean. Replacing the optical blocks are expensive. Most costing in the area of $700.00 to $1200.00 for the part. It also is a major tear down to get to the optical block to replace it. Once upon a time Hitachi had a couple of recalls on their optical blocks for various models. I do not know however if this qualified.
I hope this helps,
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WHY DOES A BLUE LIGHT CONTINUE TO FLASH ON TOP AFTER THE SCREEN HAS WENT OUT AND WANT COME BACK ON DOES THIS MEAN THE BULB NEEDS TO BE REPLACED


how many times does it flash? could be lamp, fans or overheating. clean it out with canned air. if the lamp has bulges, black spots, or fogging, replace the lamp.

Dec 08, 2009 | LG RD-JT91 Multimedia Projector

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PANASONIC..PT-52LCX15. STARTED TO A LIGHT COMES ON THE SCREEN. THEN TWO LIGHTS. FINALLY TV DONT COMES ON. I PUT ON THE TV, AND ON BOTTON START BLINKING AND TV DONT COME ON..I TAKE OUT THE TV LAMP..IT LOOKS GOOD NOT BURN. SHOULD I REPLACE IT??

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1 Answer

Hitatchi 52" rear projection TV has blue spot in middle of screen


Hello :
I suggest u retrace you the steps u took to replace your lamp make sure no foriegn objects got on the prism where the light shines throung the optics engine, if you remove the lamp compartment througly. If you had a perfect picture prior to replacing the lamp, then retracing your steps you might find something that does not belone. One final note: Did you purchase the right lamp 120watts anything higher than this wattage could damage your optics engine. I suggest never vacuuming the compartment because particals fly around from the suction and could get on the glass of the color wheel asembly.

Sep 25, 2009 | Zenith D52WLCD 52" Rear Projection...

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Blue streaks and faint blue blotches on screen


The Optical Block / Light Engine is the problem. Very expensive repair / over $1000

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Heard a pop and screen went blank - won't come back on.


Your Lcd Projector Lamp/DLP Television Lamp went out

its about $165-$200 to replace if not under warranty


Nov 28, 2008 | Hitachi Televison & Video

1 Answer

Sony WEGA 42" LCD TV


Uh Oh! blue screen of death. Your light engine has warped a little from overheating and is distorting the picture.

My suggestion to you is to get on the phone with Sony and start complaining, then keep complaining until they agree to pay for it. Even if it is out of warranty.
You may have to get the problem diagnosed by a pro before they agree to pay for it though.
Hope ya fix it!

Jan 07, 2008 | Televison & Video

1 Answer

TV Problem


It is a failure in the light engine itself. You will need to have it replaced. Here is a link to that rather costly part. http://www.partstore.com/Part/Hitachi+Ltd/Hitachi/50V500/Hitachi+Ltd/Hitachi/UX22201D/New.aspx

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