Question about Philips Magnavox 51MP392H Rear Projection Television

2 Answers

Blury picture, convergance problem

I HAVE A PHILIPS MAGNAVOX 50" MODEL # 9P5034C103. THE PICTURE IS BLURY, WHEN WATCHING A MOVIE THAT IS WIDE SCREEN THERE ARE WHITE GHOST LIKE AREAS ON THE BLCK PART ON THE SCREEN. WHEN TRYING TO DO THE CONVERGENCE ADJUSTMENT YOU CANT HARDLY SEE ANY DEFINITION ON THE CROSSES TO ADJUST THEM PROPERLY ESPECIALLY THE BLUE. PLEASE HELP! I CANT AFFORD TO REPLACE THE TV RIGHT NOW.

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What you're describing is probably contaminated coolant in the crts. Between the outer part of the crt and the lens is a chamber filled with a coolant (ethyl-glycol) which can become contaminated and cause blurred picture. I'd strongly recommend taking this to a shop the procedure for changing these is a bit beyond the layman level.
Remove Crt assembly. Mark the Crt lens position for accurate reasssembly.
Mark the centering ring's postions to make easier realignment and carefully remove lens assembly by removing the four torx screws. Keep Crt assembly vertical so you won't leak the fluid...
Remove the inner lens by carefully prying up on the edge of it.
Dump out the fluid in the sink and wash the face of the Crt and chamber with water to remove all the fungus and crud. Flush the chamber with isopropyl alcohol to kill all the fungus and dry thoroughly.
Reassemble inner lens and outer lens and tighten all four torx screws.
Remove side filler plug and fill chamber with approved new Crt coolant, reinstall and converge.
Repeat this procedure for the other two Crts. It will need this done whether it looks clear or not !! The green and blue Crts in this unit are prone to this failure.
Hope this helps
Bill

Posted on Nov 14, 2007

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I also have a PHILIPS MAGNAVOX 50" MODEL # 9P5034C103. and The Picture was getting small and big and eventually the picture doesn't come on any more. I use to come but it doesn't any more

Posted on Dec 19, 2007

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1 Answer

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The convergence is dead,need a convergece kit,U know how to solder right?Tries these websites.for the kit.Tv Repair World.com, Shopjimmy.com,Ebay.com or Partstore.com.

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This is a common problem. Your convergence has gone out.

Common symptoms are...

1) 3D Video
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Go here for a solution...

http://www.fixya.com/support/r2861627-updated_convergence_problems_amp

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Your TV most likely has one of two possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
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  • One or more colors can't be adjusted when using the convergence menu.
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701cb04.jpg
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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


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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http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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