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the circut that detects the bulb has been also failing in these sets
and the conversion chip that controls the picture , and the transformers are not putting out the full power they are supposed to.
this set will need to be tested to determine the exact cause or causes
Hi, Symptom shows Lamp is weak in result and causing restart of TV again and again. Your TV requires new lamp as per following part number... A1085447A* LAMP BLOCK ASSY XL-2200U It is available in Sony Accessories Store for $200 and replacement procedure is written in instruction manual of TV.
Always buy Sony original lamp for TV and avoid aftermarket / cheap lamp for TV safety.
Capacitor failure is the most likely scenario the FMT ans Signal PWB would cause the picture interference and the power pwb would cause the lamp light to turn red and give a 34 code when the device/ input and menu buttons are pressed in together and held for five seconds. That chassis has issues with every board in the chassis having failed capacitors you can get repair kits for the V26 chassis at the follwing link that come with instructions. Your model is the V26 chassis. Heres the link. http://servicemanuals.vstore.ca/
Go to the video menu and turn the color control to minimum. Determine if you have a black & white picture or is it green & white. If the picture is greenish, you have a problem in the screen circuit or possibly a bad picture tube. If the black & white is ok then I would suspect a problem in the chroma circuit such as a bad video jungle IC or a crystal. However, because your set had a red blinking issue prior to your existing condition I would lean towards the picture tube as the source or your troubles. You can try a simple test to determine if you have an intermittant short . Take the back off the set, and with the insulated end of your screw driver, very very lightly tap on the neck of the picture tube near the socket. If you see green flashes or hear loud snaps in conjunction with your taps or the green tint goes away, chances are the tube is the cause. If so, you might try installing an isolation transformer on the picture tube. Good luck