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How to remove light engine on sharp rear projection tv

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I have a sony lcd projection tv model kf-60xbr800, green spots on the lower right corner , it start with one spot and now the spot are all over the screen


Those Rear LCD TVs get bad light engine on some. Causes fuzzy spots size of quarter. Or sharp small bright spots looks like road map or 'stars'. Need new/rebuilt light engine.

Apr 08, 2014 | Sony Grand WEGA KDF-60WF655 60" Rear...

Tip

Rear projection TV displays a shadow on one corner or side of the screen.


Hi.

This tip may be helpful only if your rear projection TV is displaying a darker shadow on one portion of the screen. If the shadow shape and size will not vary, that means that there is probably a detached mirror in the device called Light Tunnel, located inside your TV.


Most rear projection TV works projecting the light from the internal lamp on the screen. Before reaching the screen , the light will pass through a 'pipe' whose internal surface is covered in rectangular mirrors, located all over the tunnel surface.

A quite common fault is caused by one of the mirror detaching from the the light tunnel internal surface , and falling down or hanging in there. This will be seen on the display as a darker shade located near to one side of the screen.

The light tunnel is located in the light engine. To repair the problem the TV must be disassembled by a technician. Accessing and disassembling the light engine is not a repair that can be done by the owner.

Click here to view pictures of a light engine for a Samsung rear projection model. The tunnel is the optical device located in the light engine.


If you are a technician, to replace the light tunnel you will have to take apart the light engine, that apart of being quite a sensitive optical device, is also the most expensive part on a rear projection TV.

In that case you may find useful the service bulletin posted below, that is illustrating how to replace the light tunnel on a light engine for Samsung rear projection TV. Please be aware, that if you attempt doing this operation without sufficient knowledge and experience, you may damage your TV set beyond repair, as the light engine is very expensive.

How to replace light tunnel on a Samsung rear projection:SERVICE BULLETIN

The file is on PDF format.

Regards.

Ginko.


on Feb 05, 2010 | Samsung HL-P5063W 50" Rear Projection HDTV

1 Answer

KDF-50WE655 TV Picture hard to see very dark, several different colors of spots


if your seeing spots on the screen consider it may be time to either have someone look at it (suspect it will turn out to be a bad light engine) or retire and replace it.

May 01, 2012 | Sony Grand WEGA KDF-50WE655 50" Rear...

1 Answer

How do I get to lamp in TV 60" rear projection


The lower rear cover has to be removed on that model. The lamp is on the right side of the engine. Make sure the lamp is defective because the color wheel is part of the light engine and is no longer available.

Feb 05, 2011 | Philips 60PL9200D Projection Televisions

1 Answer

I have rear projection tv sharp 55u-wp7h. Unable to turn on tv due to view timer automatic turn on. what cause that and how to fix the problem?


I'm having same issue with same TV. It powers off after about an hour and red power light starts flashing. Only way to power back on is by unplugging TV and waiting a while, then plugging it back in, but then the TV will turn off again after a few more minutes, red light flashing again. I've checked the sleep timer and it is turned off, so any other solutions to this problem? All capacitors on power board look fine (not blown). I've read it could be solder joints in power board need to be resoldered.

Dec 17, 2010 | Sharp 55R-WP4H 55" Rear Projection...

3 Answers

I have a Sharp 56DR650, red power light turns off.


Engine block(color wheel) needs replacing approx $650 total

Aug 09, 2009 | Sharp 56DR650 56" Rear Projection HDTV

2 Answers

65 inch Sharp DLP TV


You likely just have a bad lamp. It is possible the light engine itself is causing the problem but the easiest way to determine which one is giving the problem is to replace the lamp. If the problem still persists the light engine is likely bad. The light engine is about $1000 plus installation. The lamp is $349.

Feb 08, 2008 | Sharp 65DR650 65" Rear Projection...

5 Answers

Sharp 65dr650 rear projection tv makes loud nois while its on


Looks like we all got screwed with this TV. Mine just started after 2 years and now it's getting louder. I think I rather call my lawyer than Tech. This product is NOT build properly and someone should let the company know about it.

Jan 04, 2008 | Sharp 65DR650 65" Rear Projection...

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