Question about Projection Televisions

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Sir, I have Hitachi projection tv Mod. 51F500 V2k002521 227W.3.2A . My problem is this green color started to show at top left of screen and not whole screen is starting to go dark , somtimes it's ok but after a while starts to go dark again. Thanks J. Martin garvey42@comcast.net

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  • garvey42 Aug 10, 2008

    Sir, When I wrote this E-mail I ment to say( now ) whole screen is going dark. THanks J. Martin

  • garvey42 Aug 10, 2008

    Sir, I have set up a repair man coming out next Friday that was recommended by Hitachi mfg. So this gives me a start to make sure repair man is heading in right direction.



    Thanks, J. Martin

  • garvey42 Aug 10, 2008

    Sir, I am not sure you got my last 2 comments so please respond??????? Thanks Again you have been very helpfull. J. Martin

  • garvey42 Aug 12, 2008

    Sir, I cleaned the whole back of tv including removing all leads and rehooked everything back up again,no change. I still have green coming down from top left and after tv is on for a while whole screen go's completly dark.

    Thanks, J. Martin

  • garvey42 Aug 13, 2008

    Sir, Decided to not fix Tv and save service call of 100.00 dollars and possibley estimates 500. to 1000.00 repair bills on a six year old Tv . Thanks for your help any way.

  • garvey42 Aug 13, 2008

    Sir, Decided not to repair six year old TV saved 100.dollars service call and 500. to 1000.dollars in repair. Thanks any way for your help, I don't think it was worth 10.00 for information given , sorry!!!!!!! J.Martin

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6 Answers

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The actual life of the lamp in a television
can vary, based on the lamp itself, the air
temperature around the TV while it is operating,
and user’s viewing patterns.
Warmer air (or poor ventilation) shortens the lamp life, as
does turning the television on and off frequently.
Manufacturers warranties the lamp for
90days or 2000 hours of operation whichever
occurs first.
However, it is likely that the lamp
will last significantly longer than this. When
the lamp life reaches 4,000 Hours, the TV
will display a warning message for one
minute. This warning message will also be
displayed the next 5 times the TV is turned
on. The purpose of this message is to advise
the customer that the lamp may fail soon.
Caution : Allow the television to cool for
one hour before attempting to
replace the lamp.

Posted on Aug 12, 2008

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  • LORETO LACARON
    LORETO LACARON Aug 20, 2008

    did the solutions from all of us experts solved your problem if not
    then let us know the current updates so all the fixya experts can
    assist you further.

  • LORETO LACARON
    LORETO LACARON Aug 26, 2008

    Latest updates of the problem!!!

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The professional repairman have to be called from the company.

Posted on Aug 12, 2008

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If that will be the case hopefully the repairman from the hitachi will have the same diagnostic like Sir Ginko and let that part of the TV get replace and everything should be working fine...

Posted on Aug 10, 2008

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Check all the 3 RGB buld un hook them and do a good cleaning for dust accumalated and then see what happens, please update me for the same.

Posted on Aug 10, 2008

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If it is a dark green shadow it can be the lamp in need of replacement.

Posted on Aug 10, 2008

  • Ginko
    Ginko Aug 10, 2008

    Also dark shadow can be due to a problem in tv light tunnel, for example a broken mirror or a mirror out of place. To fix it the tv must be taken apart, this job is better done by a technician.
    Check your guaranty terms, eventually use the number printed on last pages of the owner manual to get service support.


  • Ginko
    Ginko Aug 10, 2008

    If you have experience on fixing TVs, you fix this by accessing the light tunnel end fixing mirrors, there you will find two screws to setup the light tunnel mirrors. Do not attempt fixing it if you are not confident with this kind of job, you risk causing more troubles and harming yourself.

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1 Answer

The green is warped on the top left of the screen.


Projection TV sets are known to have two common problems. The first problem that is common to these sets is convergence failure. When this happens the TV will usually look 3D, Wavy/Distorted, etc. It may also shutdown and blink an error code.

The second common problem with Projection TV sets is dull video, halos around objects, white looking video, or red overpowers the screen. This is commonly caused by the fluid in the lens being clouded overs.

To get fixed either call in a local TV repair company or goto sites such as www.TvRepairKits.com to get a repair kit with instructions.

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Ur tv convergence are dead.U know how to do soldering?U must replaced 2 STK convergence ICS and some or all it resistors.Tries websites Tv repair World.com,Tvrepairkits.com to buy a convergence kit to repair it ur self.The shop will cost u $300-350 for the parts and labors.

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Rear projection t.v.s work differently than most. They have threw lights that throw the picture onto the screen, instead of having a color tube that is in a traditional television. It would be my suggestion to bring it to a Qaulified T.V. professional to have watever bulb is bad replaced. odds are it will either the blue or the green(hard to remember exactly but i think its a green one lol) and not the red.

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Required info are available in service manual with details and schematics.
You can buy service manual from Manual Zone for your Hitachi 51F500 TV.
Thank you.

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Philips has a projection cleaner. I wouldn't use adbrasives like alcohol or windex. try www.vancebaldwin.com or MCM electronics corps

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hi i have same prob iv bin told its a convergence chip an thay r £150 ! thay go bout evry 6 years an its comon .. any way there coming 2 fix mine 2day so ill let u know if it sorts it out my mail is mjoutlaw@hotmail.co.uk thanx

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