Question about Hitachi 50UX58B 50" Rear Projection Television

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TV will not power up. Fuse is good

While watching TV it got alittle brighter and then shut off. not to come back on. I took the back off and checked the fuse, which is good. Where do I go from here?

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HELLO. IT'S SOUND'S LIKE YOU HAVE A BAD HORIZONAL OUTPUT TRANSITOR. AND MAYBE A BAD FLY TRANSFORMER.HOPE THIS HELP'S YOU ."GOOD LUCK"

Posted on Jul 16, 2008

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Hello,
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Also check the wall outlet (and power strip) by plugging in a lamp into it and see if it flickers when the tv shuts off.
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Watched a 3hr movie.Started the second movie and heard a loud pop and then the picture was gone but there was sound.Took the back and side panels off and found a bad fuse.Strange thing is tho when you plug...


There is a good chance that one or more jugs (CRT)s have leaked coolant down onto the Main bd and Power supply causing severe shorting. At this point ALL of the CRTs must be replaced and the Main bd and or the power supply as well. This is not a inexpensive fix and after the parts are replaced you will need to do a Full Convergence alignment by a very experienced tech which will not be cheap. You might as well purchase a new TV.

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The power management and protection circuits have taken over. There is something taking too much current and the protection system has shut the system OFF to prevent further damage ...............if you are familiar with tv service you can check the main fuse that should be close to where the power cord comes in,if you find the fuse blown it needs to be replaced with an exact replacement for AMPS rating and VOLTS rating as well as size,if the fuse is blown black we might have more problems ahead in the circuit and it will blow up again as soon as you plug the tv back in,if it blows again it will need a more involved repair,the problem could be in the primary side of the power supply.......Check horizontal output transistor.............

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http://servicemanuals.vstore.ca/

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dear friend your tv has a defective fly-back transformer 99 times out of 100 that is your problem.
get the model number and call your local electronics parts distribuitor to see if they have it, if not call tritronics 1800-638-3328 they probably have it and is not too expensive.less than $25.00.now when you get here is the million dollar question can you do it yourself? if you can't call the repairman and by having the fly-back that will decrese the cost of the repair, is just the labor.


good luck

caypianan@yahoo.com

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hello tell me did you have it on a surgestrip.!!! it sound's like the fly back transformer went out. !!! and is the set hdtv.!!! if not you might want to get you a new set,!!! a hdtv .!!! well hope this help you"good luck"

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2 Answers

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Get a good fire insurance policy!! The problem you have is the flyback transformer but its going to be hard to get just that so order the sweep board that the transformer sits on. Also your making a very dangerous situation for you or your family. Im praying something doesnt go bad in the middle of the night and start the set on fire. As theres always power to that set. Good luck and dont risk your life or anyone elses to save a few bucks. Get a trained tech to service this set, as a TV set is no place for an experimenter to be. Good Luck

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You have bad convergence IC's.. If your not experienced in troubleshooting electronics or soldering, you should have a trained tech take a gander at the set. Its not worth risking life and limb to save a few bucks, Good Luck

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