Question about Hitachi 50V500 50 in. HD-Ready LCD Television

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My screen has gradually turned blue on the left side and is taking over the screen more and more. Thanks.

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  • Hitachi Master
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The tv is having a problems known as a convergence problems,it dead.Tv have R,G,B colors lines mis alignments,have colors shadows pictures or 3D pictures look alike?Yes.The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.The tv convergence board,must have these parts replaced to fixed the tv convergence board to solved the tv convergence picture problems.The shop will cost u like $300-350 for parts and labors.

Posted on Mar 18, 2011

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Posted on Jan 02, 2017

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Screen turns blue


You may have a bad blue picture tube but there is a way to deal with this first---This is a 2001 model and does not have a light engine---I did one of these with the same problem a week ago---the set has a black plastic block with six controls---three are Focus(red,green,blue) the other 3 controls are Screen controls(red, green, blue) Someone has to remove the entire piece on the front of the set below the screen(usually a plastic part) most of the time it is secured with 3 screws on either side of the set in the back; once you remove the screws the entire piece should pull out(pull from right to left(it will not fall off or come out easy--it is held in with several large plastic pegs) With it removed there is an inspection plate with 4 screws-----the screen/focus block is behind it.

You need to look very closely at the block to identify the focus versus screen controls----one row left to right will be marked Focus and the other row left to right will be marked screen------YOU need to locate the Blue Screen control(they are black like the block) With the set on(be careful) go to a video input with nothing connected---if you see a blue screen as well as the input number turn the BLUE SCREEN CONTROL SLOWLY TO THE LEFT UNTIL THE BLUE is gone.

If this cures the problem you may only be buying yourself some time----if the blue picture tube is bad sooner or later this trouble may return----I have seen sets where this was adjusted and the set worked for a year or more with no repeat of the trouble----replacing the blue tube would likely cost you 400 - 500 parts and labor.

I do this here for free so if this has helped you take a moment and give me a vote here.

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1 Answer

Blue screen


The blue picture tube has gone bad. Sadly they are no longer availible for that unit. But the blue tube assembly can be sent back to a company called Video Display. They rebuild the tube for a very reasonable price. The hitch is that it takes a professional tv tech to reinstall and align the rebuilt tube. Most respectable shops will do this work but the repair is spendy. Usually around $450 to $500 or more.

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Screen has a vertical black band on right hand side


You might have a centering control among the options of your monitor. Look up the manual, or just play with the buttons until you find it.

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Screen


your LCD goes damage left side of lcd there is mosfet ic's it was stick out and it can not repairable
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Green lines appear on the screen when dark picture is shown. Others have the same problem but can not figure out how to remove the front cover. Please help us


The front panel normally has some screws that need to be removed from the inside of the set. You need to remove the back cover first and you should see the screws. Then the panel pops off. Good Luck
Ed
NC Electronics
Mills, Wyoming

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1 Answer

Convergence


One of your convergence IC's has burned out and needs to be replaced. A good rule here is to go ahead and replace both STK392-110 IC's with the new improved STK392-150's. If you have never replaced convergence IC's and realigned convergence circuits, allow a qualified tech to handle it for you.

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