IF THIS IS A PROJECTION TV ,,THE CENTER LAMP IS ACUALLY THE GREEN PICTURE TUBE-ANY LOCAL TV SERVICE COMPANY WOULD LOVE TO SELL YOU A GOOD USED PART- ..RCA IS NO LONGER --GO TO THE" THOMSON ELECTRONICS" WEBSITE FOR CUSTOMER SERVICE,,GOOD LUCK!!!!
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First make sure to hit the menu button on the TV's remote
and if nothing is there then friend while the set is on turn a bright
flashlight on and shine at angle into the set push the TV menu button if
you can see a image then your back light is not working.
You can also check the transformers they are close to were the wires
plug into the panel, make sure all transformers read the same amount of
resistance if not you have found a bad one. Now you will have to check
to see if the power supply is sending 24v to the backlight, if not the
power supply is bad. Cost backlights around 150.00 and power supplies
around 100.00. Well this should help you friend.
The P52926 uses the PTK195 series chassis. The middle "rear projector" is actually the Green Picture Tube. If the red and blue tubes are working then all major components of the set are fine. The only things I can think of that would stop the green tube are cracked solder joints on the green picture tube socket PC board or an open high value (100k - 120k ohm) resistor on that board. If you do not have experience testing and replacing small parts or resoldering boards in a projection set then have a qualified tech handle it for you.