Question about Hitachi 51G500 51" Rear Projection HDTV-Ready Television

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Hitachi rear projection

Turned tv on the have a red outcast shadow on everything. cleaned the lenses but still the same even after magic focus. help..... thanks

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Re: hitachi rear projection

Convergence IC's should always be changed out when the
labor is invested to pull the chassis........and use only first
quality OEM parts = no generics,they don't hold up........T.

Posted on Nov 16, 2007

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Re: hitachi rear projection

Bad solder connections on convergance board solder the connections if this does not work then replace them

Posted on Nov 15, 2007

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We got a free hitachi projection tv that i believe has a bulb malfunction. on the left half of the screen has a red shadow we cant afford a hundred dollars for an estimate then whatever the price of the...

You might need to adjust the red screen drive control, turn the Red down and see if that clears it out. Sounds like the Red Tube is over driving the Green and blue Tube.
Find the Focus and screen control block there will be 3 controls on Top 3 right under them R-G-B they adjust the Focus to each tube and screen drive for each tube. also you need to clean the lenses off top of each tube they get dirty and dusty and it would help to clean the mirror

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this sounds like the convergence ic's need to be replaced that should fix the problem

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Does the magic focus work on your set ?

If it doesn't you must replace the convergence Ic's with a kit that is available through your local parts distributor

You must replace all resistors in the kit
If you are not good at soldering and de- soldering have a local tv shop do it for you

Good luck

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One half of picture is distorted

to create the total geometry in the tv is needed a system called Convergence.Convergence amplifiers are damaged in this unit, magic focus cannot work because magic focus works to level computer and controls the amplifiers damaged. this repair is for a technician because an adjustment is needed after the amplifier's replacement.

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Green cruve line

Good Day;
Suspect Convergence IC's STK4274, part Number 2003191. Replace all three IK04(red), IK05(green), IK06(blue).
Good Luck, big IRISH.

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sounds like convergence ics need to be replaced

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a common problem wich i also have with convergence with blue and red convergence.
the image converge amplifiers are burnet out wich in turn blow out resisters that control individual color convergence.

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it sounds like your blue convergence ic is getting weak you need to replace the ic's STK392-110 and you should replace both because when 1 is bad the other will go real soon. They are inexspensive at the sight I posted and you will also get free tech online support if you purchase them there.

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