Question about Sony KDF-E50A10 50 in. LCD HDTV

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Rear projection TV

I have a LCD rear projection TV which the lamp blew up on, i replaced the lamp and it is still not working the self diagnosis light is still flashing?

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Re: Rear projection TV

Make sure you didn't hurt the little micro switch in the door cover you took off. IF that little switch isn't activated, the set won't turn on at all. Make sure you hear it " click" Or you can hold it manually with the door removed and see if set turns on then. IF it does, you have found the culprit. Good luck and Let me know... I need the ratings...GURU JAY

Posted on Feb 06, 2008

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Hitachi lcd rear projection problem

Check the lamp and its ballast. Replace both of it at the same time. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. Do a search by type in the brand name of your device at its search box and press "Enter".
Lamp replacement procedure is given.

Jul 22, 2014 | Hitachi 60VG825 60 in. LCD Television

1 Answer

What is an optical block

LCD and PLASMA sets do not use them---LCD rear projection sets that have a lamp for the light source use them: light from lamp shines into the engine and picture with color emerges from lens at top of optical engine, it shines into a mirror which projects it on the front screen---Display is LCD but with a mirror it is also rear projection.

May 19, 2012 | ViewSonic N2750w 27 in. HD-Ready LCD...

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Changing the LCD lamps

You may follow the below mentioned steps to replace the lamps :

1. Power off the LCD TV. Unplug the AC power cord from the television and the electrical socket or power strip.
2. Locate the plastic or rubber grommets or screw hole covers on the rear edges of the LCD TV. Use an awl or small flat head screwdriver remove the rubber pieces from the screw holes by gently inserting the tool into the hole and prying out the cap. Note that on a few LCD TVs, the grommets or screw hole covers may be on the front face of the unit.
3. Loosen and remove the screws in the holes from which you removed the plastic or rubber grommets. Set the screws aside and keep them together.
4. Remove the plastic shield that protects the input ports on the rear of the TV if the unit has one. To remove the shield, use the awl to pry the plastic tabs loose or remove the retaining screws with the screwdriver.
5.Use the flat head screwdriver or awl to separate the front and rear pieces of the monitor casing. Start on the lower edge of the casing and gently pry the two pieces apart. Work your way around the outer edge of the television and separate the tabs until you can pull the front face off the casing. Remove the front bezel piece from the television.
6. Locate the inverter board below the LCD screen on the TV. The inverter board is small circuit board with wire connector plugs on either side. Disconnect the plug on the right side of the inverter board that leads to the backlight lamp bulb.
7. Use the Phillips screwdriver to remove the screws on the edges of the LCD screen that attach it to the rear part of the TV casing. After you remove all of the screws that secure the LCD screen, place the screen face down on a soft towel.
8. Remove the screws that secure the back light lamp in its track. If the wire leading from the back light lamp to the inverter board uses clamps or ties to secure the cable, disconnect or remove them. Remove the backlight lamp from the TV casing.
9. Insert the new backlight lamp into the track and secure with the retaining screws you removed from the old bulb assembly. Run the wire through the clamps or ties as needed to position the wire plug next to the inverter board.
10. Realign the LCD screen with the screw holes in the rear part of the TV casing. Insert the retaining screws and tighten them. Connect the wire plug from the back light lamp to the inverter board.
11. Replace the front part of the TV casing and snap into place. Reinsert the retaining screws in the holes on the rear of the TV and tighten with the Phillips screwdriver. Replace the plastic or rubber grommets and push them into place securely.
12. Reconnect the AC power cord and plug it into the wall socket. Power on the TV and use normally.

Feb 06, 2012 | Flat Panel Televisions

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Just replaced the lamp, but I still have a blue

You need an optical block. PN: A-1132-202-A. Part is very expensive with a $1500 core charge. Consider replacing the TV. Sorry, this is will eventually happen to all Rear Projection LCD televisions. The UV light emitted from the projection lamp destroys the Blue LCD panel first (shorter wave length), then the Green then the Red. The panels are not servicable, the entire unit must be changed. I hope this helps... it will save you a $100+ service call fee anyway.

Mar 17, 2010 | Sony KDF-E55A20 55 in. LCD Television

2 Answers

Sony KDF-E42A10 rear projection TV. Won't turn on.

Start by changing the lamp. If you got 5 years out of the old one, count your blessings, most folks only get three. The lamp is designed to be replaced by the consumer. Ebay will carry a replacement for you or you can get it directly from They've got good prices. The lamp door is on the back. Its really easy, give it a shot.

Sep 07, 2009 | Sony KDF-E42A10 42 in. LCD Television

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Same problem

You mean physically replace the lamp or reset the lamp timer?

To replace the lamp, you unplug the TV, take the front cover off of the TV under the screen, open the little door, unscrew a screw, then pull a handle that will pull out the entire lamp assembly.

Shove the new lamp assembly in place, reattach the screw, shut the door, snap the panel back on, and fire it up.

To reset the lamp timer you have to have your TV remote (not a universal - the original remote). Turn the TV on and wait for the lamp timer reset message to disappear or push Exit on the remote (or any button similar to exit, depending on the model).

Then, simultaneously press and hold the VOL- button on the TV and the PIP button on the remote at the same time (usually near the bottom left of the remote). On some models it is the SPLIT button instead.

IRT the other answer, there are more than one type of rear projection television. The one's you have seen with three lamps are CRT-based and have one CRT for each primary color of red, green, and blue. Panasonic no longer makes these and any issues with the lamps must be referred to an authorized servicer. Therefore, I conclude in this case that the question is in reference to a DLP or LCD rear projection display.

Aug 22, 2009 | Panasonic PT-44LCX65 Television

1 Answer

AKAI Rear Projection 46"TV has a blank picture with sound only


Is it a CRT or a DLP/LCD projector? If not a CRT, a worn-out projection lamp can cause this symptom. When it is a DLP projector, a faulty Colour Wheel sensor can be the additional problem. If it is a CRT projection unit the High Voltage and deflection circuit must be examined...

Please tell me more about your unit...


Jan 19, 2009 | Akai LCT2715 27 in. LCD Television

1 Answer

Hitachi Rear Projection LCD TV Lamp

Projection TV makers charge an arm and a leg for their replacement lamps. They make it easy to do but as a result the custom lamp assy is expensive. The trick is to just buy the bulb for your model TV from any number of us aftermarket sources at a fraction of the lamp price and install it in the old lamp yourself. really easy. Some models are real bulb hogs though. Look them up on the net (include the word complaint or repair) before you buy, or you might be sorry. Many class action lawsuits out there - even against some of the name brand makers.

Oct 17, 2007 | Hitachi 50V720 Television

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