Question about Philips Magnavox 51MP392H Rear Projection Television

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Yellow tinge in picture how do I change the coolant fluid?

Need to know how to change the coolant fluid?????

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  • dsandds Feb 18, 2008

    bobbyj, Thanks for the info.....is there a place where I can find the service manual for this TV? I have checked around and most tell me that there is not one around....just wondering? Again thanks!!!

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You need to remove the CRT from the set. the problem CRT is the blue CRT. after removing the gun leave the yolk inside. there is a drain plug on the side of the CRT remove it and drain into a hazard waist container and dispose of it as hazard waist according to your local regulations (ethylene glycol) very dangerous if ingested. use rubber gloves and becarefull of the CRT it can implode. after its drained you must take the lens assembly off the clean the CRT face. use 95% rubbing alcohol to clean the face and lenes of the gun. replace the lens assembly and refill the chamber with fresh fluid. replace the CRT assembly in the set. alien according to the service manual. check for leaks after warm up. if leaks accure remove the CRT and repeat the process but save and re-use the fluid reseat and clean all gaskets and make sure the screws are tight.

Posted on Feb 18, 2008

  • Robert Johnson Feb 18, 2008

    this is the part # for the fluid kit 483531067032 the service manual is not availble even thru Philips.

    for alienment start with the yolk turn it until the lines are straight then converge the set.

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I have a Samsung rear projection tv, the picture is faded and the colors are not crisp or clean cannot watch it like this what do you think the problem is?


If this is a CRT-type rear-projection TV, the CRT coolant fluid is probably broken down. It's supposed to be clear, but after a long period of TV operation, it turns a yellow-brown color. If you unplug the TV and remove the back, you can look into the tops of the three picture tubes. They should be a clear red, green or blue color, with no yellow-brown tint.

CRT coolant can be changed, but you need to be very good at mechanical work to do it. Besides the safety considerations (picture tubes and other parts may carry a high voltage charge even when the set is unplugged), spilling broken-down coolant on electronics is usually disastrous, so you have to be very careful.

LCD panels used in projector applications may lose contrast if they are overheated (this can be caused by failure to keep the vents clean as recommended in the owner's manual).

You would have to provide your set's model number to get more specific information.

Oct 27, 2010 | Samsung Televison & Video

1 Answer

I have the akai model # ptf492s and the white colors are yellow


I'm almost positive the problem is you have fungus in the CRTs. I know this sounds strange, but it's true. Basically there is coolant fluid in the lamps that develops fungus over time and turns yellow. It should be clear. If you take the back off the television, you will see the 3 lenses (red, green, blue) Each of the lens is held on with 3 screws. Remove the adjustable lens and look at each CRT. Shine a flashlight in they should look white. From what I've read, blue develops the problem first, then green. You can replace the fluid. Look up TV coolant replacement online. It's not to difficult, but you cannot get any of the fluid on the circuit boards or it will ruin it. Mine had a lot of fungus in the blue CRT and a little in the green. The picture looks 100% better now. Good Luck.

May 12, 2009 | Akai PT5492S 54" Rear Projection...

2 Answers

Convergence on top of screen and 3D bended lines (yellow & pink lines).


Hi,
It is failure of convergence out ICs causing 3-D type picture on screen, you need to replace two big ICs in convergence section on main board.
Click Part Store to see an image of IC as well as price info.

If you need service manual of 43FWX20B, let me know to provide you a copy.
Thanks.

Apr 25, 2009 | Hitachi 43FWX20B 43" Rear Projection...

1 Answer

How to change crtfluid


Only a qualified service tech should replace coolant fluid. I've serviced TV's for a good while, and I would not attempt this repair without a co-worker showing me precisely what to do. You have to remove the Picture Tube(s) to do this, and if they leak after assembly, your TV circuit boards could be totalled out. The coolant is similar to anti-freeze and is corrosive.

Apr 13, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Philips Magnavox 55P8288 Entire picture has green


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.

Apr 09, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Philips Magnavox 55P8288A Green tinge over entire picture


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.

Apr 09, 2009 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

1 Answer

There is a picture but it is blurry with a big yellow blur.


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.

Dec 30, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Need to fix the color and screen


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.

Nov 11, 2008 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Changing fluid in CRT's


You can go to the following site, under the repair kit catagory they have a CD that documents the step by step proceedure for coolant change in phillips / magnavox tvs with pictures. They also have the entire kit with 48 ounces of high purity coolant and the cd
Heres the link.
http://servicemanuals.vstore.ca/

Jul 11, 2008 | Televison & Video

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