Question about Hitachi 50V720 Television

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50v720 Color Issue / Reply w additional details

Dan - the overall picture quality is fine - its just green... period. Everything has a green hue. No adjusting of color/tint/contrast helps.
I am sure it is very dusty, but have no idea which screws to remove for easy access - is there a service bulletin on this procedure?

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I'll check on your specific model, but this problem is usually caused by degradation of the LCD light engine. Hopefully we can work around it for the short term. I'll update this with the model specific info in a day or so (I'm traveling at the moment).
Dan

Posted on Apr 01, 2008

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2 Answers

Color issue


download this manual
http://merchant.satisfusion.com/sf/library/manuals/owners/50V720.pdf
see page 59,60,61,62. The problem can be the lamp
After extended use, if the TV picture turns dark, the color looks unusual or LAMP INDICATOR light turns on, then it
is time to replace the lamp with a new lamp.

Mar 21, 2008 | Hitachi 50V720 Television

1 Answer

My Hitachi tv no longer has any green contract when I try to change the hue as a result my tv has a large centre area that seems to have a redish hue and no matter how I try I don't get any real color...


Hello,

This problem is very common with rear projection TV's.

It is related to one or more of the colour guns being out of alignment or needing to be replaced. The only way to correct this issue is to have a technician come in and fix it or bring it into a repair center. I personally would suggest purchasing a new TV. The cost of getting them aligned is usually more then a basic LCD.

Hope this helps

Dustin

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Sound is ok picture with green screen


The exact problem you are describing here is unclear. Are you getting a clear picture just in green or are you getting just a green screen with no picture at all? If the first, then you are sending a composite signal into the component connectors. A composite signal (typically the yellow connector) is the entire picture over 1 wire. Component requires 3 (RGB being the most common). Verify that you are using the correct input for the signal type and update this with any additional details about the status of the set.

Thanks,
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Dec 29, 2010 | LG 42LC2D 42 in. LCD HDTV

1 Answer

Why is the picture getting a green hue on and off instead of the normal color?


This may be caused because your color and other settings may not be set according to your needs. Try resetting the color, brightness and contrast with the help of your remote. If your set is new and within warranty period you can have a free checkup or replacement from the company.

Apr 07, 2010 | Panasonic TH-42PD50U 42 in. Plasma EDTV

1 Answer

Hitachi 50v720 green-red color all over the screen


Ur convergence is dead.
U need to buy a kit from Ebay.com enter ur tv name make and model.
U get 2 IC and a resister must replace those u solve the prob.

Aug 26, 2009 | Hitachi 50V500 50 in. HD-Ready LCD...

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Some times the picture gets a green and red hue and the menu turns from green to red ,


HI. this is being caused by a faulty convergence chip that is located on the convergence board. simply replacing this chip or replacing the entire board will fix this issue.


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1 Answer

FOGGY-HAZY PICTURE


The contrast setting should always be more than the brightness setting, it's purely common sense to have the black levels dark and the white levels light. I advise your brightness to be 40, and your contrast to be set to 60.

You shouldn't alter the hue, as most manufacturers would have spent significant time balancing this anyway, so set this to 50 and leave it alone.

The saturation shouldn't be altered too much, the best bet is to set this to 55 and let it be. Also, the colour temperature shouldn't be changed atall, so set this to the default setting and leave it alone.

As for the sharpness setting, this should definitely be set quite low. I advise setting the sharpness to 40, and the reason for this is most people assume that the higher the sharpness the better quality and detail, and they're completely wrong.

If you do what I said, you should end up with a crisp, smooth and colourful picture.

Nov 29, 2008 | Televison & Video

1 Answer

Green hue on all inputs


Most likely there is a failure in the video processing. The flickering was from the failing components breaking down.

Your set can be serviced by an experienced tech who has spare boards and the facilities to service your set.

Jerry G.

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1 Answer

50V720 w/pink hue over entire screen


The light engine will need to be replaced. Without a warranty the part is very costly. You are lucky...

Nov 29, 2007 | Hitachi 50V720 Television

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