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Hello
There are two possibilities for this fault with Sony Projection tVs. The first is with the lamp itself. The second one is with the lamp ballast baord. Replace the lamp ballast board first. Because, it there is any internal winding short in the inverter transformar of the ballast board this type of fault can occur. you have to replace the ballast baord along with the new lamp anyway. Therefore, replace the ballast board first. If this help you, there is no need ot replace the lamp. Picture of the ballast included here for you to compare.
If replacing the ballast dis not help you, change the lamp too. OK.
I will forward a link to a page where you can find the instructions on replacing the lamp of the TV.
http://www.docs.sony.com/release/KDF42-46-50-55E2000.pdf
This indicates problems with the image engine. (Lamp does not control the colour). If the TV has not been cleaned recently, excessive dust build up internally may have overheated the image engine. If Sony will not cover it, you might want to consider a new TV.
after changing the lamp, I still had the same problem as you. I contacted sony and they offered me a brand new 40 inch bravia flat screen tv replacement...at no cost! If I chose a 46" or 55" there would be a charge between $325
There are some adjustments that can be made to align the picture. This might correct your problem. They should only be made by trained serv tech. If that won't fix it then replace the light engine. There are 2 different ones for this model. They are serial number sensitive.
Sony has extended the warranty on the optical block which you are experiencing a problem with until June 30 2010. Read about it here. http://www.agoraquest.com/display_alert.php?alert_id=17
Please make sure you have the Lamp seated properly in the set. If you purchased just the lamp without the basket make sure it is Flush against the front of the lamp basket. The light path is being obstructed or not aimed properly. Let me know, hope this helps.
If replacing the ballast dis not help you, change the lamp too. OK.
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