Kindly forwarded a circuits diagrams and other servicing details for my LCD projection TV model KF-50E200A, since frequently gets repairs.

More than likely the power supply is defective, but without testing and the repair manual that is just a guess, you make the decision to replace or repair the TV.

Make sure the lamp door switch is gettng closed, and the door pin is not obstructed by something. Also possible a bad generic new bulb.

If you are refuring to an Optic Block then yes. This is the heart of your Television. It controls all of the color and projects the image out to you. i believe this model uses 1 of 2 different Optic Blocks. So if you are going to change one, you need to know which one is in your set.

Short of looking to see if PIP is engaged I would suggest a call to Sony with the model number to see if this is a known issue with this model.

no and yes
the lamp warning is to alert you that a timer has expired that clocks the approximated life of the lamp in "hours of use".
it is never accurate and is dependent on whether or not it was reset the last time a lamp was replaced.
reset the lamp timer in the users "setup" menu.

the lamp has NOTHING to do with color, it only provides light.

check the connections between the TV and cable/satelite box...the red.green.blue component connector...the red one is likely loose.
if this does not correct you color problem, your optical engine has failed.
very expensive repair, not for the DIY type guy.

Circuit diagram of which part?

TV has gone into "protect mode" to do just that to protect against the damaging failure that has been detected, you will need a servicer to diagnose the failure. Good luck and Merry Christmas!

Try changing the settings for the video formats, widescreen, regular, and all that. There are angle mirrors in the back of the tv that direct the projected image on the screen. The mirrors are positioned such that if, says, a piece of a metal bracket or something falls down inside the projection area, it'll fall right against the projection lens and block the image. Open up the back of the tv and follow the light path from the screen backwards to its source and make sure there's no debris in the projection path.

Your TV has a bad optical block. Mine has the same problem. Sony has extended the warranty on the optical block till 6-30-2010. I called Sony and they offered me a newer model 52 inch flat panel LCD for $450 and told me to keep the old TV. They will also pay to have your TV repaired if desired. Here is the email I recieved from Sony:


Dear Valued Sony Customer,

Models: KDF-42E2000, KDF-46E2000, KDF-50E2000, and KDF-55E2000
US Based Customers: KF-42E200A and KF-50E200A

As part of the Sony commitment to quality, Sony is announcing that it is extending the limited warranty (parts and labor), in the United States, on the optical block of the above-referenced 2006 model Micro-Display Rear Projection televisions until June 30, 2010, regardless of purchase date. For any customer who requires repair of the optical block on one of the affected models, Sony will cover the cost of the optical block repair (parts and labor) at no charge through June 30, 2010. This extended warranty does not apply to the replaceable projection lamp or the other parts that may be used in the televisions.

Sony is also announcing that for any owner of these model televisions who paid out-of-pocket expenses on or before February 28, 2009 for an estimate or repair service to replace the optical block, Sony will reimburse the customer by mail for the cost of the optical block and the labor expense to replace it, subject to certain conditions. To receive reimbursement, please follow completely the directions on the claim form; for reimbursement all claims must be postmarked by April 15, 2009. See the claim form for complete terms and conditions.

All other terms of the Sony limited warranty continue to apply. Sony utilizes a network of hundreds of qualified independent third-party servicers to perform in-home television warranty service. Sony, through its authorized servicer network, will endeavor to repair your set within 30 days of your first contact. For diagnosis, warranty service, or if you are not provided a repair within 30 days, please contact Sony at (888) 649-7669.

Sincerely,
Sony Electronics


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Sony Electronics Inc.
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© 2009 Sony Electronics Inc. All rights reserved. Reproduction in whole or in part without written permission is prohibited.

Privacy Policy/Your California Privacy Rights | Legal/Trademark Dear Valued Sony Customer,

Models: KDF-42E2000, KDF-46E2000, KDF-50E2000, and KDF-55E2000
US Based Customers: KF-42E200A and KF-50E200A

As part of the Sony commitment to quality, Sony is announcing that it is extending the limited warranty (parts and labor), in the United States, on the optical block of the above-referenced 2006 model Micro-Display Rear Projection televisions until June 30, 2010, regardless of purchase date. For any customer who requires repair of the optical block on one of the affected models, Sony will cover the cost of the optical block repair (parts and labor) at no charge through June 30, 2010. This extended warranty does not apply to the replaceable projection lamp or the other parts that may be used in the televisions.

Sony is also announcing that for any owner of these model televisions who paid out-of-pocket expenses on or before February 28, 2009 for an estimate or repair service to replace the optical block, Sony will reimburse the customer by mail for the cost of the optical block and the labor expense to replace it, subject to certain conditions. To receive reimbursement, please follow completely the directions on the claim form; for reimbursement all claims must be postmarked by April 15, 2009. See the claim form for complete terms and conditions.

All other terms of the Sony limited warranty continue to apply. Sony utilizes a network of hundreds of qualified independent third-party servicers to perform in-home television warranty service. Sony, through its authorized servicer network, will endeavor to repair your set within 30 days of your first contact. For diagnosis, warranty service, or if you are not provided a repair within 30 days, please contact Sony at (888) 649-7669.

Sincerely,
Sony Electronics

Clarification Request by welcomejee, posted on Oct 26, 2008I couldn't understand what exactly you looking for?
What kind of diagram you need?
Please let me know with bit detail.