Question about Hitachi 43UWX10B 43" Rear Projection Television

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Hitachi 42" LCD 16:9 HDTV

I have a Hitachi 42" LCD 16:9 HDTV that has a yellow spot almost the size of the screen. It has been repair twice. The first time was it had a yellow line across the top of the screen and then mold got on the screen causing a black area to be seen on the screen. This unit is 2.5 years old.

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  • lolcott Dec 09, 2007

    I have A Hitachi 50C20 50inch Bought from Walmart Jan 15th 2007. About 2 months ago the bulb blew. Hitachi sent me another bulb asap no problem but was a diff number. Evry since then I have had this yellow greenish glow center screen circuler from to to bottom. ANd around that is a white band or lighter color band around that. Could this be the Light engine or Optical engine? That cost more then what I got the set for. Still under warrenty but I am having problem getting Hitachi to send out a tech. Been complaing for 2 months

  • Anonymous Dec 30, 2007

    blue spots on screen

  • looou64 Dec 31, 2007

    We also have yellow and blue curved lines from the top of the screen down to the middle. The TV is around 10 years old. Need to know if we can fix ourselves or just give it away and get a new one.

  • waxerman Jun 10, 2008

    I also have the Hitachi 50C20

    I have a problem with a black vertical bar down the left edge of the screen. Cuts off about an inch of the picture!

    Looks like the lamp is off? Could this be?

    Also, just this evening, the picture went very bright.. too bright. And the brightness, contrast and color settings have not been changed.. When adjusted, still nothing seems to get the picture back to proper quality.

    What could my the problem be?

    Have had bad experience with Hitachi warranty in past.

  • Anonymous Jul 24, 2008

    yellow screen



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Posted on Sep 11, 2007


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1 Answer

Spot in center of screen, if the color pictureis black the spot is blue, if the picture is white the spot is yellow.

Spots in screen is commonly caused by defective LCD on the optical assembly. LCD replacement is very difficult. I suggest to contact the nearest service center at your area.

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Hitachi rear projection LCD with yellow blobs on screen

I have the same tv and the same problem, but my yellow is a cloud around the outside of the screen. My tv was recently moved, and a repair shop told me that sometimes in a move these tvs light engine takes a shock and causes a yellow "band" on the screen. I am hearing that these light engines are not cheap either. Hope this helps you.

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My Hitachi 60VG825 projection TV is 3 years old. For the past several months the screen has been turning blue around the outer edges & this past week a large yellowish green spot the size of a...

Sounds like Calibration is needed on the projection internals. Your TV uses a rear-projection system and the problem is either in the imaging LCD Unit or the light filter. I see in a previous thread you have changed the bulb. You can invest in a voltage regulator to keep the hardware in factory condition.
Also you can burn a DVD of a stuck pixel remedy video and run it on the screen with full brightness and full contrast. This is used for plasma burns and stuck pixels on conventional Flat panel TVs but can repair color issues with projection systems. This therapy is focused on the imaging unit between the projector and the main drop of your tv.
please feel free to post a more in-depth description or any changes

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Blurry screen on 50in Hitachi LCD

Sounds like you need a bulb replacement, if you watch tv a lot ave life is about 5 years

Sep 14, 2009 | Hitachi 42V710 42" Rear Projection HDTV

4 Answers

Yellow spots

I have been told by a local repair person that Hitachi might replace the light engine at no cost because it is such a big issue... has anyone hear about this... I am going to contact them directly also.

Sep 08, 2009 | Hitachi 42V710 42" Rear Projection HDTV

2 Answers

Couloured spots on screen

sounds like you have colour impurity problems caused by a magnetic feild being near the Screen. Fist check for any new magnetic feilds nearby. If there have been no new changes, it may also be a faulty PTC device that automatically degausses the tube. When they fail, you will get problems with impurities by way of coloured spots on the screen.
Try disconnecting the set off at the wall for 30 mins, this will initiates the auto degauss process. If all is ok, the spots will be gone. If not, you will need to have someone handy with a soldering iron that is also familiar with TV repair to replace the PTC for you.

Please rate this solution. Happy to answer any other questions you may have. Cheers.
regards robotek

Jul 15, 2009 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

Dark yellow halo on screen

I believe you have a optical Engine causing the problem. Due to the cost, I would call Hitachi to see if they could help with repairs.
Hope this helps,

Jul 04, 2009 | Hitachi 42V710 42" Rear Projection HDTV

1 Answer

TV red spot

Your light engine is going bad.

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1 Answer

Have yellow spot in center of screeen

it is actually a light engine problem, i have replaced probabily 50 of thease for that exact problem, it is a prity hard part to change yourself, and it costs about 400 dollars

Jan 09, 2009 | Hitachi 42V710 42" Rear Projection HDTV

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