Question about Philips Magnavox 51MP392H Rear Projection Television

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I replaced my convergence IC's and know my RED CRT is too bright.

I can't adjust the brightness of my RED CRT. The picture convergence is fine but the picture has a red tint to it. Can someone help me with this problem or tell me what parts I need to fix it.

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Can you find the screen and focus block? There are six controls on it; three for focus and three for screen adjust ( brightness ).

Posted on Apr 15, 2009

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Zenith pvr6069 rk is out of focus for letters and picture not very bright


First this set should have a production date on the rear of around 1995--fairly old.

If letters outlined in red etc--a convergence problem--either adjustment with remote (in menu) or a circuit problem in same area.

If picture dull and darker--locate the 3 large lens inside from the rear and wipe them clean--they are the light source for the sets picture and if dirty will cause a dark dull picture.

Let me know if questions.

SD TECH

Apr 22, 2012 | Televison & Video

5 Answers

Philips 50P8341 50 in. Rear Projection Television


normally when something like this happens, we could right away propose what can be done, in your case, since youve already changed a lot of parts on that tv, you can at anytime fix it. the tv alone is not fixed yet as of the moment but to some it up, experts have already given you some ideas on how to fix the tv. cheers. hope youll fix that tv in no time.

Mar 12, 2008 | Philips 50P8341 50" Rear Projection...

1 Answer

Just the blue on my rca projection tv is blurred. on the auto convergeance it says it cant read the sensor. on manual the cross hairs for the blue are oversized and blurred. i tryed tuning in the focus but...


Have you try adjusting your focus/screen drive controls to Tube R/G/B you have a focus/screen drive control block to adjust each Tube 3 controls ontop 3under them top ones are for Focus bottom is for screen drive.Red/Green/Blue Tubes.You might need to replace convergence IC, what is your Model number printed on back of TV?

Mar 24, 2010 | Televison & Video

1 Answer

Tv has lost it's brightness, dark scenes are almost unviewable


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.

Feb 22, 2009 | Panasonic PT-53WX42 53" Rear Projection...

1 Answer

Convergence Problem and Contrast Adjustment


Have you checked all of the resistors inthe convergence circuit as well? If not, check them for the correct impedance.. Remember, you have to pull one side of the resistor out of circuit to measure it correctly. 
If all of the resistors are good, then you have to do a coarse convergence adjustment on the set through the service menu.. if you need the service manual for the convergence directions, I have one uploaded in the technicians corner of techlore.com



Dec 25, 2008 | Televison & Video

1 Answer

Double image in bright blue with philips model 55pw9363/17f



You may have 1 of two problems.

1) Convergence Chips are failing - Using your original remote goto the "convergence" screen. 

Try to adjust the red - UP - DOWN - LEFT - RIGHT

Next try to adjust the blue - UP - DOWN - LEFT - RIGHT

If you can move both colors in all directions you do not have a convergence issue. 

If you can't move one or more colors in one or more directions the convergence chips are defective and need to be replaced. 

If your convergence chips test out ok the most likely problem is......

2) CRT Coolant is cloudy  - The bright outline you described is one common symptom. Other symptoms include dull images, red or orange tint, halo around images.   

If you goto the site www.TvRepairKits.com - and click on "Tips" - you will find more detailed instructions on how to check the convergence.  

Dec 04, 2008 | Philips 55PW9363 55" Rear Projection...

2 Answers

Panasonic rear projection tv convergence problem


Check the regulator and convergences ICs....accordianman

Feb 26, 2008 | Televison & Video

2 Answers

Red convergence way off


Hello,
I had the same issue as you pretty much exactly and so do others right around this last few weeks so I am thinking that this is a common problem with the product itself.

You can fix this pretty quickly with the link below. I bought it and it resolved the issue.

http://www.partstore.com/Part/Samsung/Samsung/PCN5425R/Samsung/Samsung/BP9500142E/New.aspx

Jan 02, 2008 | Samsung PCN5425R 54" Rear Projection...

2 Answers

Picture Brightness Flickers


could be one or more of three things.
1.could be the crt itself.(sony had a bad bunch of crts for this model)
2.could be the vertical ic on crt board.
3.could be the focus block
in my experience solutions 2 and 3 are more common....

Oct 19, 2007 | Sony KP-51WS500 51" Rear Projection...

1 Answer

RCA ATC113AA.F20TF20 G2 Problem


adusting these stuffs needs a special equipment like the color pattern generator. u cannot just adjust this manually. try to inspect the crt circuit board see if there is an open resistor there. u have a luminance problem

Jan 04, 2007 | Sony KV-35S45 35" TV

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