Question about Sony KP-53V45 53" Rear Projection Television
In a Sony TV, the most common cause of the picture flashing on and off is a weak picture tube. When the set was new, it took about 5 to 10 seconds for the picture to appear once the set was turned on. This is normal. If you have been noticing that it has been taking longer and longer to first appear, this is the clear signal that one of the picture tubes is getting tired. There is a circuit called IK Blanking that monitors each picture tube and adjusts them as the tubes age, so you always see a good picture. When one of the tubes has weakened so much that it cannot produce enough brightness in the picture, the circuit shuts the picture off completely. I guess Sony does not want you to see a tired, dull picture. When the tube is right on the edge of being too weak to keep the picture on, the picture will flash on and off, and it will also take much longer beofre it first turns on. The good news is that the Sony picture tubes always respond beautifully to reactivation (CRT Recharge) but you will need a qualified tech familiar with Sony projection sets to handle that repair for you.
Posted on Aug 21, 2007
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Posted on Jan 02, 2017
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