Question about Toshiba 57H84 57" Rear Projection HDTV-Ready Television

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Loss Of Blue Color

I have lost the color blue on my television. I am also seeing a strange red hue surrounding some images on the set. Does anyone have any idea what this could be?

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Re: Loss Of Blue Color

Thanks a million i got a 54" RCA I had HD cables connect to the DVD-Recorder some how I aways got a blue screen but know you fix my problem.  Thanks a million know my 54" RCA works fine.

Posted on Oct 14, 2007

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Re: Loss Of Blue Color

The loss of blue could be one of 3 things. First of all if you are connected to a HD cable box or a HD sat. recvr. using component cables. Make sure the BLUE connection hasn't fallen out or is loose. The possibilities is the blue CRT (picture tube) itself or something in the blue CRT driving circuit.

Posted on Feb 26, 2007

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My screen has little dots appearing sometimes red sometimes blues behind the picture i just replaced the lamp bulb as i thought it would cure the problem

the projection tube needs to be adjust for color alignment, each tube (red, green, blue) must be aligned so you there would be no color smear appear on screen. if it is aligned try to set up the color balance, hue etc.

Feb 06, 2011 | Samsung Projection Televisions

1 Answer

Mitsubishi wd 52525 lost greens and blues. only colors on screen are red hues.

This the classic symptom for component input wires being crossed. Check color coding on tv input and signal sourse. Green,Blue and Red wires must correspond. If ok Is the color off on the tv menu also. If so and wires are ok replace light engine.

Nov 03, 2009 | Projection Televisions

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Loss of red color and dual images

Ur convergence is dead,U know how to solders?Buy a convergence kit,use what in that kit.ur tv should be back to normal.This website have the convergence kit
Tv repair

Oct 21, 2009 | Hitachi 57F500 57" Rear Projection...

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Picture is red

If you are running component video, make sure the blue is plugged in and in the right spot. Component video works like this: the green is a black and white image, the red and blue are cover overlays to make the image display properly. So if everything looks plugged in right, then try plugging in a composite video (Yellow) or S-video cable switching to the appropriate input, and see if the image is still red. If so, go to the set up and set the set to factory defaults, and see if that fixes the color issue, It's possible that the color settings on the TV are messed up, with the S-video plugged in go through the set up menu and see if you can correct the color issue IF THE IMAGE IS STILL RED WITH THE S-VIDEO OR COMPOSITE VIDEO, otherwise the issue is a problem with the component video cable.

Oct 01, 2009 | Philips 60P8342 60" Rear Projection...

1 Answer

Color is weird.

Component Video Jack was loose.

Dec 14, 2008 | Sony KP-48V45 48" Rear Projection...

1 Answer

DLP Colors Are Off - Picture Is Mostly Blue and Yellow

You are missing either red drive signal to CRT or you have a cold / fractured solder joint on the television. Also with the set unplugged check with a non metalic object like a ruler or a wooden spoon and start tapping around in the front or back of set and see what happens. See if you can narrow which area of the set has a problem... Good luck future technician.. Happy holidays.. Jay

Dec 08, 2008 | Hitachi 43FWX20B 43" Rear Projection...

1 Answer

NO Blue Colors on any station/program

If you are using component video cablesm make sure the blue is connected from tv to source.

Oct 27, 2008 | Sony Grand WEGA KDF-50WE655 50" Rear...

2 Answers


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
Here is a quick test....

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

Try to adjust the red and then the blue 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.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.

Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

TV set after fluid change


2c07611.pngSolution #2

What you will need to do is replace the coolant and clean the crt. You can get a repair kit from that includes replacement coolant, photos. instructions, etc.

Aug 20, 2008 | Philips 60PP9200D Television

1 Answer

Yellow hue

1)Please verify your model # from back of set......

2)Reduce the color to minimum or tune in a black & white chan.
you should see gray, not yellow hue

3)Remove lower front grill cover & access panel.....locate the
focus / screen control block...turn blue screen control slightly,green and blue must mix to equal gray

4) reset color to normal level.......reassemble

Dec 22, 2007 | Toshiba 57H82 57" Rear Projection...

1 Answer

Problem with color

Yes you have a problem in the red crt driver board. Most likely the driver transistor is failing. This is a component level repair, so if you have no experience with TV repair, play it safe and call in a trained tech to assist you in this matter. Good Luck

Jun 05, 2007 | Mitsubishi VS-50609 50" Rear Projection...

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