Question about Sony Grand WEGA KDF-55WF655 36" Rear Projection HDTV
You have the blue dot or star pattern on screen issue
Sony will fix it for free until December 28, 2008. I would contact Sony and they will send a repair person out to confirm and fix it.
Agoraquest has the information in the url below and the procedures to fix it.
Posted on Dec 04, 2008
Byt he way, these parts (the optical block) are now being fixed by Sony under an "extended" basis due to the amount of problems....I would re-contact Sony as they are now standing behind the product.....
Posted on Jan 07, 2008
Premtech is right. I had the same problem with my Sony Wega 55" KDF-55WF655. It was the Optical Block. I was looking at a $1200 to $1300 service bill.
My TV was only 13 months old. I did not have a extended service agreement. I call Sony Corp and complained and complained, Sony elevated my concern up 3 management levels. I told Sony all I was is the part for free and I'll pay for the labor of installing it. Sony felt that was fair and shipped the part to my service vendor. The service call was $350.
The way to prevent the blue fog from occurring in the future is to view the screen in full mode. Don't view a program with the image cut off and black bars on the sides or top and bottom. Always stretch or enlarge the picture to fill the whole screen.
Bobby G aka poolmvp1
Posted on Jan 06, 2008
That could only be the optical block, Sony p/n# A1084662a and heaven help you if it needs to be replaced. It is the single most expensive part of the DLP based projection Tv's costing approximately $900.00 dollars plus core and shipping..
You'll need to take this one to a quality repair center to have it estimated. It may be that they can repair it also - but whatever the case these type of repairs are not cheap.
Please don't kill the messenger...
Posted on Dec 01, 2007
if you have any speakers near the screen the magnet may be causing the problem. i had a similar thing happen & when i moved the speaker the problem went away
Posted on Jan 02, 2009
Your TV most likely has one or more possible problems.
Problem #1: Convergence Chip Failure ( common problem )
Here are some of the most common symptoms and example photos of a convergence problem
Here is a quick test....
Using your original remote go-to the tv settings then goto the convergence section.
Try to adjust the red and then the blue convergence.
You should be able to move them up, down, left, and right.
If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.
Problem #2 CRT Fluid is Cloudy
Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.
Picture of a set that needs the fluid changed.
TV set after fluid change
What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.
Posted on Mar 29, 2009
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