Question about Hitachi 51G500 51" Rear Projection HDTV-Ready Television

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Color off for first 60 seconds...

Hi, I have a 4.5 year old 51g500 and just recently when I power it on the color seems to be off for the first 60 seconds and then corrects itself. There is no ghosting or convergence problems that I can see, just a lack of color (especially noticed on the grey side bars) and then voila its ok again. It seems to be more purplish (if i can remember correctly) at first but green is apparent in the regular picture until it self corrects. Should I be concerned or have someone look at it, or is this normal after so many hours of use? Oh and just prior to noticing this happen, I enabled the 'power on when video 2 is detected' feature but when i disable it now the problem still happens.

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Re: Color off for first 60 seconds...

You have three color tubes in this set and they are RED< BLUE, Green, I would check 200v line going to CRT's. You may just have a loose connection. you can move around slightly and see if you see a change. Be carefull thou, not to damage anything else. Check to see if CRT boards are on neck of tube(press upward slightly) Hope this helps

Posted on Sep 05, 2007

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51G500 51 in. Rear Projection HDTV-Ready Television went black white why?

It does not have a "color" tube, the model here appears to be a set with 3 picture tubes---do yourself a favor and unplug it and a box if used or a receiver if in the line--wait a bit and power back to see if the units connected will reboot.

Also remember to check all the inputs to see if any have color: if using the cable wire direct to a set hook a DVD etc to one of the rear audio video inputs to see if same problem there.

Let me know what you find--I answer about 400 questions here each week but try hard to help anyone who responds or needs more help.

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It seems color wheel problem in your tv that gets problem after some time and you hear high pitch noise along with picture flicker.
Color wheel need to be replaced to solve this issue. Required color wheel is available with (click to view image of part and price info) and it is job of qualified tv repairman because light engine will take apart for that.
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this is a convergence problem,
well worth fixing
I would have a TV repairman take a look at it.

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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

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