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Go to a unused video input and examine the screen----if you see blue with slightly curved trace lines the blue screen control for the set is set just a bit too high.
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When it flashes blue, are the flashes bright blue lines going across the screen with the picture in the background, if so, It sounds like the Blue tube or blue driver circuit is breaking down after a short period of time. If this is the case, the uPC that controls the set is detecting a large current drain on and is shutting the set off for protection, An engineers expert eye is required I`m afraid. Ian.
it sounds like the blue crt is failing Pull the front off and turn the tv on When it still has a good picture tap the blue crt if it flashes blue with lines across the screen then you know it is a bad crt
the vertical blue lines indicate some interference from other electronic gadgets near your tv. it started showing up on my sony grand wega when i installed my wireless modem. i almost ordered a new rear projection lamp costing over $100 but decided to experiment. i first moved my desk computer farther away from the tv then isolated the wireless modem router by placing it inside a small glass - the vertical blue lines became lighter in color so i dedided to find another small glass that fit inside the first glass container then put the router in the double glass - no more blue lines and my wireless modem router still works.
do some deductive thinking to figure out what's messing up your tv and isolate the interference.
good luck!
Had this problem bout 2,3 years ago...it was fixed in about 5 minutes with the help of this article
Tonight I have to do this fix again..the blue lines came back about a week. http://www.somelifeblog.com/2007/06/sony-projection-tv-red-line-repair.html I strongly urge you to save the web page locally on your hard drive or print it out and place with the tv manual....
blown fues on the G board, that should fix my problem and or might need to replace stk392 convergance amp ic's ·http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm ·http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
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