Philips 60PP9202/17f. Had a problem start a few
In rear projection sets like yours, you have sort of a projector, and thats how it displays the image, It doesn't have a BIG picture tube, but magnifies and projects the image on to the screen. This actually sounds like a convergence problem, or color purity.maybe one of the "Guns" in the TV set, is going faulty, usually you have red Green and Blue, if too much red is showing, then it may be down in emissions. use the service manual, that will soon help you zero in for a fix.
http://www.eserviceinfo.com/download.php?fileid=41128
There is a service manual, that will show you how to adjust and setup your TV
This is the generic service manual, many sets use same Chassis.
But, it is nearly always my professional opinion that one should always get a "Quote" from the manufacturers, in your case Philips, contact their local office, and ask for a referral, to a recommended service center, I cannot stress how important that last point is. It is even worth the cost of shipping. you see an authorised service agent, will have trained staff, trained on their brand, also they have first hand access to parts, original parts. This will actually save you money and ensure you can actually get it back fixed. Of course asking for a "Quote" also gives on the option of repair or replace. Often my clients,do not go through with repair, unless it is moderate, but in some of the more costly jobs they see it, as do i, that a replacement, with a warranty, is a better option. As an aside here, one could then tear the TV down, and sell the Known Good bits. You'd be surprised who needs parts, i myself often must by from third party sources to effect a repair. So money could be recouped, somewhat,and help out someone else