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 everything is either redish hue or washed out and over bright. What could be the issue I have tried to change the contract, brightness, sharpness everything. It is hooked to a High Def Satellite dish/receiver, with an HDMI cable.

Convergence output IC's and Resisters. There is a Replacement Kit which includes resisters.

If your TV looks 3D, warped, or distorted it likely has a convergenge problem.
If however it just looks dull, washed out, redish, greenish, or blueish or if it looks like objects on the screen have halos the fluid in the lens has soured.
You can search google for parts or you can get the parts with repair instructions from sites such as www.TvRepairKits.com

Sounds much like the red CRT has failed.
you may be able to source one here:
Hitachi service
Good luck-

For CRT projection TV's, this indicates that the Green picture tube is burned (warn out). The less green that strikes the screen, the more redish the image will look. You will need to find an old school TV repair shop that knows how to replace picture tubes.
In the case of a DLP style TV, the color wheel needs replacing.

Unplug the TV from the wall and plug it back after 45-60s should fix the problem. However, it will come back from time to time so the same procedure will reset the video board. You'd want to upgrade the firmware on the ATSC tuner as well because old firmware was built before the final standard and when the TV goes digital in June 2009, it wreak havoc on all older HD TV. Go to hitachi website and download new FW for your TV. Copy the FW to an SD card and follow procedure from Hitachi to upgrade. It works wonder for my TV after the upgrade.

Try doing a calibration. Projection TVs work with 3 picture tubes (Red, Green, Blue). The Red may be off to one side causing the hues.

The manual is available here for instructions on how to perform calibration:
http://www.retrevo.com/samples/Hitachi-manuals.html#Projection%20TV

Change posistor in the degausing circuit.

Had the same problem, light engine is out. Hitachi will replace part but you'll have to pay 150-300 for the labor

Sounds like a convergence promblem.

Here are some of the most common symptoms of a convergence problem.

Screen looks 3D
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed in or warped.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence or magic focus section.

Try to adjust the convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

Its a fairly easy fix on the Hitachi sets.

You can get a repair kit that includes all the parts from www.TvRepairKits.com. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc.
Everything you need to fix it yourself.

The problem is called green geometry.There is nothing wrong w/the green pix tube.It is critical to get the green geometry

accurate because the red and blue convergence overlays on

the green.If you have more than an alignment issue,that will need

repair before adjustments are attempted.