Question about Philips Magnavox 51MP392H Rear Projection Television

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Philips Rear Project TV with HD Inputs

Hi, not sure how old this set is but given to me when my daughter brought a new home they left this TV behind. The only problem is the picture colours are dull. I have reset it to the factory setting restore but still no good. Could you please tell me the possible cause an if it is expensive to repair. My TV is in need to have the fuild in the tubes cleaned out. Is that costly? or is that something that an averge Joe can do?

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It will cost about 600.00 to have a repair shop do it. However you can get the repair kit at the following link which has the coolant and a step by step instructional CD with pictures. Just click on the repair kit catagory, they have the CD available by itself or you can get the entire coolant change kit.
Here is the link.
http://servicemanuals.vstore.ca/

Posted on Jul 23, 2008

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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.
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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.

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TV set after fluid change

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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.

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