I own a KV-36FV15 Sony Trinitron, bought in 2000 for 1,700 $'s, Recently it started blinking black, off and on at the start up for about 3 to 4 minutes but the sound is intact. Then it seems to warm up and stop blinking black screen, only occasionally later. But everytime I turn it off and then back on, it starts the cycle over again. One of your emailers on this problem gave interesting instructions about adjusting a screen screw attached at the end of the red feed on the tube yoke or high voltage. I shall try this and get back to you sometime. Thank you for the tip. Blessings

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