Question about Hitachi 53UDX10B 53" Rear Projection Television

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When I turned it on the blue seems to be real bright and there is a yellow highlights.

There is still a picture, but mostly yellow and blue with shadows. Could you please give me an idea if this is something that can be repaired with a kit and is it easy to do. Most of the dealers for repair recommended on the sight have really horrible BBB ratings...

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Re: when I turned it on the blue seems to be real bright...

KIT10 $29.50
Repair Kit for Hitachi convergence Chassis DP-14G
KIT10 Includes 2 pcs STK392-150 , 1 each of the following 1W axial lead fusible resistors:

Posted on Dec 05, 2007

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Picture settings

settings are not likely to resolve a "yellow" looking screen.

Go to an unused video input or turn color all the way off----the screen should be gray or black and white looking.

What this really suggests to me is a total or partial loss of blue--the set has a red, green, and blue picture tube---a loss of blue means red and green=yellow.

You can peek inside with the set on and see if all 3 lens for the tubes are lit equally bright.

Let me know what you find (press make comment on this page) and depending on what you find I may be able to suggest something to try)

Mar 24, 2012 | Panasonic Projection Televisions

1 Answer

My tv screen when on turns yellow then after a while it will switch back to normal colors what can be wrong with it....

Televisions covered: all Projection with yellow picture, but not Projection TVs with a yellowish tint surrounding objects in a nearly normal picture.

Yellow = red + green
normal picture = red + blue + green (RGB). See illustration.


Fig. 1 Additive color mixing in an RGB monitor, or RGB Projection TV.

The circuitry powering your blue output, or the blue light engine itself is starting to fail.

Operating Theory:

The lamp module shines a bright light into the optical unit; there are a series of lens and baffles, and at the top of the light engine, a lens puts the picture into a mirror which is reflected onto the screen; All video and color is processed thru the light engine. Blue most commonly fails first, leaving a yellow picture.

Dec 26, 2011 | Mitsubishi WS-55805 55" Rear Projection...

1 Answer

Blue missing from picture and low brightness; whites not white shades of yellow and pink; blues are green

its most likely the Blue CRT drive board which is causing the issue since the set would not power up if the Blue CRT itself were bad, so the drive board is the most likliest. You can get the blue CRT drive board from

Oct 22, 2011 | Sony KP-46WT520 46" Rear Projection...

1 Answer

Have 47" Samsung HCL743W rear

Here is what to do to confirm what problem is, go to black and white program and make sure color adjustment is turned all the way down to zero.

What you are looking for is what color is the screen?

If it a primary a yellow looking screen (all or most) you have bad Glycol in most likely the blue tube. These sets have a sealed area with a sealed area with Glycol (it is like antifreeze and meant to keep the face of the the three picture tubes cool).

What can happen (usually the blue) is it becomes contaminated with bacteria====note, if blue tube is contaminated you will have yellow screen (red and green=yellow.0

The real easy way to confirm if this is the case is with the back removed and access to the three large lens on top of the tubes look into each lens, if the blue one has no picture and looks like a floodlight, but the red and green have a picture, YOU HAVE FOUND OUT YOUR PROBLEM.

I can tell you if this is the case I can tell you what is involved, this most likely is not a do it yourself repair but i can tell you what is needed.


Dec 28, 2010 | Samsung HCL473W 47" Rear Projection...

1 Answer

I am having trouble adjusting my colors for my kp 53s25 there seems to be a lot of yellow how can i solve this?

This TV has had a long life. Your picture is looking more yellow these days because the Blue picture tube is wearing out. Not saying the Green and Red tub are much better, but Blue tube is a major player in the picture brightness and white balance (the color of white which the TV reproduces). The cost involved wouldn't be justified. You should enjoy the balance of the TVs life; when it's time comes... have the new TV delivered and ask them recycle this one. Best wishes.

Apr 26, 2010 | Sony KP-53S25 53" Rear Projection...

1 Answer

Our 1991 RCA P52150CP rear projection TV has gradually been getting bright cloudy blue, slight haze around letters & shapes-(especially blue channel change headings) when first turned on and then it...


First check whether all the cables from your dishnetwork are fine and connected firmly.If yes then you'll need to pull off the front of the tv, behind the speaker grill there would be a panel. Remove the panel and check for a black box hanging over there. It has 6 controls on it, 3 are marked as focus and 3 as screen. You'll need to adjust the screen. If you turn these too high you can damage a tube. so we are doing real small adjustments. Turn the color off on the tv and adjust the red, blue & green controls up till you get a fine picture. Also adjust the focus until you get a clear picture.

And, if it doesn't resolve your issue then it is an intermittant blue picture tube, a bad blue driver transistor on the CRT board, a bad connection on the blue crt board, or a problem in the RGB coming from the video jungle IC. A set this age, most likely will run you about 300 to 500 bucks to have this problem fixed, unless it is the picture tube.

Please do accept this solution and revert for further assistance.


Jul 03, 2009 | RCA P52926 52" Rear Projection Television

1 Answer

Hdtv with yellow half circle on bottom of screen

Odds are real good that the cooling fluid in the blue picture tube assembly has become contaminated. Only solution is to pull blue crt and dump out old fluid and clean and reinstall new fluid. Once done a fair amount of re-alignment is required. This is not a job for a do-it-yourselfer. Most tv shops would charge in the area of $250 to $300 for this repair.

May 01, 2009 | Panasonic PT-56WX53 53" Rear Projection...

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Adjusting to the proper color

Tint would be the control that will control the color balance, but this sounds like it may be deeper then that. Turn your color all the way down so that you have a black and whit picture. If the picture is still yellow then you have a problem with the blue picture tube.

Feb 02, 2009 | Philips 43PP9202 43" Rear Projection...

2 Answers

Picture calibration settings for 42lg70

Picture Menu
Picture Mode: Expert1
*Backlight: 16
*Contrast: 83
*Brightness: 53
Sharpness: 50
*Color: 55
*Tint: 0
Expert Control
  • Fresh Contrast: Off
  • Noise Reduction: Medium
  • Gamma: Medium
  • Black Level: Low
  • Real Cinema: On
  • TruMotion: Low
  • Color Standard: HD (N/A w/HDMI)
  • White Balance: Warm
  • **Method: 10-Point IRE
    • 10 IRE
      • **Red: 1
      • **Green: 2
      • **Blue: -16
    • 20 IRE
      • **Red: -6
      • **Green: 0
      • **Blue: -7
    • 30 IRE
      • **Red: -5
      • **Green: 0
      • **Blue: -4
    • 40 IRE
      • **Red: -8
      • **Green: 0
      • **Blue: -4
    • 50 IRE
      • **Red: -4
      • **Green: 4
      • **Blue: -4
    • 60 IRE
      • **Red: -6
      • **Green: 6
      • **Blue: -5
    • 70 IRE
      • **Red: -8
      • **Green: 3
      • **Blue: -10
    • 80 IRE
      • **Red: -8
      • **Green: 7
      • **Blue: -16
    • 90 IRE
      • **Red: -9
      • **Green: 5
      • **Blue: -18
    • 100 IRE
      • **Red: -10
      • **Green: 4
      • **Blue: -9
Color Management System
  • Red Color: 0
  • Red Tint: 0
  • Green Color: 0
  • Green Tint: -15
  • Blue Color: 0
  • Blue Tint: 11
  • Yellow Color: 15
  • Yellow Tint: 2
  • Cyan Color: -15
  • Cyan Tint: 0
  • Magenta Color: 0
  • Magenta Tint: -1

lg70 nice tv excellent processor just to bad there is no intensity control on color management oh well still better than what the three s are pushing block out the hype lg will be number 1 in a few years haters are starting to come around and well leds coming,

p.s. i dont work for lg just tired of losers bashing stuff because they dont own it.
im isf certified those settings are right on the money straighter than a ruler

Oct 05, 2008 | Projection Televisions

1 Answer

Ccreen quality

There is no yellow tube my freind, only a red, blue, and a green one. If its too bright, have you tried to turn down the black level yet or brightmess, and also the contrast. On these sets you don't need to have the brightness up way high, as the contrast does this. If, when you turn down the brightness, and the picture looks dull, you may need to clean off the mirrors, and or the lens for the picture tubes. If that does not help, there could be a problem in the screen drive circuit or the high voltage block. Good Luck Ps Please do not forget to rate this thread.

Dec 08, 2006 | RCA P52926 52" Rear Projection Television

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