I have a large yellow area in the centre of my screen, does this sound like a projector lamp problem

Sad to say many of these Sony projectors are now developing faults in the LCD panels. In your case, it's a problem with the blue one.

Replacement units are available, but they are very expensive and a nightmare to install. Given the fall in price of projectors, and the ready availability of high brightness LED lamped units now, your wisest move might be a replacement projector.

Alternatively, you could take it to your nearest authorized Sony service centre for a quotation, but you'd best be sitting down when you get the price. {:o(

Press MENU on the remote (with the projector running of course).
In the window that comes up on screen, there are a series of icons on the left side of the screen, and the currently selected one will be highlighted (yellow if memory serves me correctly) scroll down through the icons to the very last one - the Information icon.
Press ENTER
The Lamp Timer (lamp hours) will now be showing on the screen, below technical info about the current signal feeding the projector. The 'Lamp Timer' information is at about the centre of the screen :o)

If the yellow area is mainly in the centre and not a well defined spot, then it's most likely the blue polariser plate that has been overheated by the white light over much use.

Your Blue LCD Light valve is burned or has dust on it which blocks the blue color.

With RGB, the absense of blue (Red + Green) is yellow.

If you're lucky a simply cleaning at the light valves will solve your problem. Otherwise your looking $$ for a new LCD valve.

not sure which model you have but sounds like the blue polarizer has overheated over time. when you put the new lamp in I would think that the extra light you now have is highlighting the problem more plainly.
If this is the case then a new polarizer would be needed

Hi
If spot is light ( like a clouds ) then probelm is with dust .if is dark then LCD panel is faulty.pl conatc your nearest service centre
ANS BY
M.R. Mumbai & Dubai

Sounds like a scorch mark on the polerising filter, this can only be replaced by an engineer cost around £70 ($150).

Marc Engineer

The bulb won't do that. What you're describing sounds like a light tunnel failure.

If the problem is what I describe as a blue haze over the entire image projected, I was told this is a defect in the cable - we have a Dell Video Projector 2300 - and it takes only a dell VGA cable.

So, the problem is in the cable - solution is replace cable.

One of the lcd panel filters has a bad spot on it. Most often its the blue filter.