Question about Hitachi 42V715 Rear Projection Television

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Discolored oval I purchased the 42V715 in October 2004 (over 2 years ago) and recently I have noticed an oval in the picture in the center towards the bottom about 12-15" in diameter. It is not noticeable unless there a lot of whites on the screen, but when the screen is mainly white this oval has a yellowish tint. Does anyone know what could be causing this problem?

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Re: discolored oval

Open the set and see if there is anything inside the set, like cobwebs, ect. Also look down into the tubes while the set is on to see if there is anything floating around inside the fluid. My educated guess is that it needs cleaning. Good Luck PS Please do not forget to rate this thread

Posted on Dec 07, 2006

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Re: discolored oval - Hitachi 42V715 Rear Projection Television Projection Televisions

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Posted on Jan 02, 2009

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Re: discolored oval

Anyone with a service manual for a 42V715 tell me what the part number is for the light engine?

Posted on Oct 08, 2008

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Re: discolored oval

Call hitachi customer support and keep on going until you hear the right answers after talking to at least three people (be patient) you should get them to give you a full letter of concession for the light engine; labor and the part cost as far as the industry goes ,they are relatively liberal in their consumer relations when it comes out of warranty products the replacement light engine costs roughly 400-500 dollars it is an improved model with different cooling features one of the panels is marked on your light engine a safe guess is that you bought it during cold weather we are seeing a lot of lcds going bad and not showing up for a year, sometimes longer on other transmissive lcd engines if you can pay for the labor ie: $ 300, hitachi may reimburse you a good approach is have an authorized servicer write you an estimate which should cost less than $100 then approach hitachi customer service with the information

Posted on Dec 09, 2006

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You have some reason to believe it will not?

Some history for you---several years ago Hitachi began along with others to have issues with the optical light engines.

With a mix of high heat from a lamp into the engine (it has a blue,green and red section inside---guess what? BLUE is the first place that gets the heat and is damaged----minus blue and you have red and green which equals YELLOW.

Several of their sets made about 6 years ago (research 50v500) had exact same issues and were settled in a class action lawsuit.

The issue can but does not always affect the entire screen.

The question really is: This set really worth the part and labor cost for the repair?

On that earlier model I replaced under warranty over 40 of the engines. Also Sony and others have had similar issues some of which were settled in court.


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I have replaced alot of these light engines for this problem. Yesterday I received a letter from Sony saying they are going to give an additional warranty to have the optics replaced. I just checked, your model is one of them and Sony is replacing the optic block under an extended warranty, regardless of the purchase date, until the end of October 2008. Contact Sony for an Authorized Service Center in your area or go to this site to read about it: Have this repair done on your set and it should save you about $1300.00 to $1500.00 on the repair. Hope this helps.

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