Question about Hitachi 50UX57B 50" Rear Projection Television

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I need to replace the green color tube... could i buy another TV and use it even if it was a different screen size?

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The tube is designed for that set and other makes may not work correctly.
If the green one has failed the others will be on their way out and I wouldn't entertain a repair, purely for financial reasons.

Posted on Dec 30, 2010

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I'm having issues with color? Every blue is now green. Can't adjust the tint. Any fixes?


You didn't say what the model number of the TV was, so I'll guess it has tubes for each color Red, Blue and Green. The blue tube is probably weak. If you really want to spend the money on replacing the tubes (costly) you may be able to buy a similar sized flat screen TV for less than the cost of the repairs.

Feb 18, 2016 | Televison & Video

1 Answer

I have Zenith rear projection TV Model IQC60H95W.The blue tube does not work. The red and green project. Is this a bulb or tube and are they available to purchase? The TV was made in 2001


This is a CRT(cathode ray tube) not a bulb. A Bulb is totally different. If you replace one Tube, you need to replace all 3 or the colors will never match properly. However, This model no longer has parts available. Even if they were, the cost would be close to $1000 in parts. I would not recommend repairing this TV.

Sep 14, 2014 | Zenith Televison & Video

2 Answers

How much will it cost to have the color tube replaced in a 65 in. tv


They are not worht replacing and rarely go out. Your TV may actually have a different issue. See below.

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Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....




  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg
69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Common 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.

578ba6c.jpg
TV set after fluid change

65af323.jpg

69189a5.pngSOLUTION

You can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jun 02, 2011 | RCA D52W23 52" HDTV CRT TV

1 Answer

Philips 60PP9363 colors not right. TV is 5 years old, the convergence appears to be fine in that all of the colors line up fine, but they are not the right shade. The green and blue are both teal, with...


Ur tv look dull in pictures?Ur tv might need it CRT tube coolant replacement.Tries websites like Tvrepairworld.com,Tvrepairkit.com to buy a coolant kit to replaced CRT tube coolant replacement.

Aug 04, 2010 | Philips 60PP9363 60" Rear Projection...

1 Answer

53 inch projection tv...seems like the color red and color blue have shifted giving me a picture with red and blue shadows


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.

Dec 29, 2009 | Hitachi Televison & Video

2 Answers

Red, green and blue colours diveded on my TV


ok well "tube" tellys as they are called use an electro magnet to keep the picture stable and colours correct its called gaussing now if you have a speaker or something magnetic nearby it will stuff up the colors but only normally producing colors like purple,green, or white
if you have colors across the screen (that aren't caused by magnetic force) then you need to take it to a repairer or decide wether or not to buy a new one this issue can turn out to be quite hard to fix and can be expensive the different colored electron guns may be burning or burnt out causing pale color or it could be as simple as a power transistor in the H.V supply has shorted out..and causing power issues to the tube.
hope this helps,ben

Aug 13, 2009 | RCA 20F512T 20" TV

1 Answer

Color


I would not recommend changing tube usually 10,000 volts on a crt so very dangerous better to buy a new tv typically around the same in price

Apr 14, 2009 | Toshiba 27A33 27" TV

2 Answers

Magnavox 51" Model # 51MP392H/17 Color problems


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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
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 www.TvRepairKits.com. 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.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


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

Jan 06, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Rca 62" PROJECTION FLATSCREEN - COLOR PROBLEM/FLICKERING SCREEN


Sounds like the red picture tube could be shorting internally which would cause the "all red" condition. In which case you'd have to replace the red tube. Are there horizontal (slightly slanted) lines through the picture as well when this is happening and a very very bright screen? If so it's most likely the tube.

Oct 06, 2008 | RCA F36645 TV

1 Answer

Color


It needs repaired. I can think of many different possibilities causing the problem: 1. Shorted video luminance driver transistor. Should be under $200 total repair if you take set in. 2. Shorted green kine bias transistor. $200 3. Failed jungle ic. $250 4. Shorted green gun in the picture tube. More than you paid for tv set... Rca picture tubes commonly run 25% more than the tv set did new!!!!!!!

Nov 27, 2005 | RCA F27625 27" TV

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