TV cooling fan repairs

Sounds like the "lamp door switch" is not making contact. Make SURE the lamp door is secure, and nothing is getting in the way of the little "pin' on it--this trips the switch when the door is closed.

The fan should run for a few minutes after shut off to cool the lamp down.

If I read and understand correctly somewhere in the cycle you are getting 5 red blinks? that is an error code........

Either you or I can Google the model number of the set with 5 blinks.....or visit the Sony site to see what it means.....

by pops? do you mean it explode? how many lamps? it could be the fan that supposed to be ventilating the lamp or it could be the the ballast, why the ballast because the ballast regulates the voltage in order the keep the lamp on, for ignition it sends around 15,000 volts after that it regulates the votage to a small amount of voltage around 5,000 so it could be sending the big amount of voltage all the time never regulates that or it could be regulating and then sending another big amount of voltage over and over until the lamp doesnt handle those changes.

Blue blotches spreading over the screen are failure of the optical block

contact Sony to see if you are eligable for a free repair.

Sony will cover the cost of the optical block repair (parts and labor) at no charge through December 31, 2008 for 2004 Model Year Grand WEGA™ Televisions with the blue spot problem.

Models: KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620

http://esupport.sony.com/US/perl/news-item.pl?news_id=
Read more: Help from Sony for LCD rear projection with blue spots - Home Theater Forum - Home Theater Systems - HomeTheaterShack.com http://www.hometheatershack.com/forums/sony/5351-help-sony-lcd-rear-projection-blue-spots.html#ixzz0gm8a3718

Don't bedeterred by the dating of this announcement, it is a manufacturing fault and they have been pr5etty good to a lot of people with the same problem.

Please rate my help++++Thanks for using FIXYA

This sounds like an issue with the optical block assembly. Sony had a problem with this part in a lot of the KF-series television.

They extended the warranty of optical blocks in the KF-42WE620, which doesn't help you but from what your saying this sounds like the issue.

Sony wega blue dot or star pattern on screen
http://esupport.sony.com/perl/news-item.pl?news_id=206&mdl=KDF42WE655
Models: KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620
Sony LCD Rear Projection TV - Optical Block Problems
http://splinke.googlepages.com/sonyrearprojectionlcdtv-opticalblock

Sony wega blue dot or star pattern on screen
http://esupport.sony.com/perl/news-item.pl?news_id=206&mdl=KDF42WE655
Models: KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620
Sony LCD Rear Projection TV - Optical Block Problems

Is you model listed below?

Sony wega blue dot or star pattern on screen
http://esupport.sony.com/perl/news-item.pl?news_id=206&mdl=KDF42WE655
Models: KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620

Sony wega blue dot or star pattern on screen
http://esupport.sony.com/perl/news-item.pl?news_id=206&mdl=KDF42WE655
Models: KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620
Sony LCD Rear Projection TV - Optical Block Problems
http://splinke.googlepages.com/sonyrearprojectionlcdtv-opticalblock

http://esupport.sony.com/US/perl/news-item.pl?news_id=206
thought I would let you all know of the recall.

For models:
Models: KF-42WE610, KF-50WE610, KF-60WE610, KDF-70XBR950, KDF-60XBR950, KDF-42WE655, KDF-50WE655, KDF-55WF655, KDF-60WF655, KDF-55XS955, KDF-60XS955, KF-42WE620, and KF-50WE620.



/This is a free repair on the optical block/engine. For specifically a road mapping issue. (Where there is sparactic grouped lines on the screen of the TV)

Otherwise there is a full recall on all 50XBR1's and 60XBR1's for ANY video issue.
But the bullentin I do have on that is Confidential due to the amount of claims SONY could recieve. But here is a sample of the bulletin.

Models: KDSR50XBR1, KDSR60XBR1

Subject: Optical Block: Warranty Policy and Part matrix by serial number.

Resolution: As part of Sony’s commitment to quality, Sony is announcing that it is extending the limited warranty (parts and labor) for optical block replacements on the models listed above until October 31, 2008, regardless of purchase date. Authorized servicers should follow the normal process for warranty claims for this issue.