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Sounds like a bad red projection tube, disconnect red tube socket and try again if tv stays on reconnect tube soket and adjust screen controls on front of tv under the front panel which you will have to remove to do any of this. There are six adjustment controls 3 are for focus for each color and 3 screen controls for each color. Look close at the black plastic control module should be labled R G B for focus and R G B for screens. Good Luck!
How old is this tv?Check out the new one,compair the price of the New Screen to a brand new tv.It exspensive to replace the projection screen.Any big screen tv shop in the yellow pages can repair this.
The contrast screen can be replaced. However, the Contrast Screen is no longer available from Sony. The corresponding part numbers were 4-070-286-11 and 4-081-064-01. I got this information from an Electronic Parts Distributor.
The screen with the "swirls" on it is the fresnel lens and that is the one that goes in back then the lenticular lens goes next (it has the feel of a grid to it). Then the screen proetector goes on the very front. The fresnel lens only works installed one way. On Sony TV's look for the orange tag with the part number on it and put that to the lower right facing outword and usually 99% of the time this is how they go back in.