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I have sound but no picture just a black screen

I have a philips magnavox projection big screen tv and all of a sudden the picture went out. we have sound but no picture just a black screen. what could have caused it and how much am i looking at for repair or can it be done without a tech. it's a philips magnavox projection tv, model number 7p6041 c101 chasis ptv780-ah01

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  • Anonymous May 17, 2009

    HI MY TV WAS WORKING FINE THEN JUST WENT BLANK BUT YOU CAN STILL HEAR THE SOUND JUST NO PICTURE, MODEL 50WT29B. REAR PRROJECTION

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5 Suggested Answers

SOURCE: no picture, sound ok

you need a new flyback.
that is the problem.

Posted on Nov 17, 2007


  • 2267 Answers

SOURCE: MAGNAVOX 50 INCH REAR PROJECTION Hor. Output Tran Keep Going Out

Try checking some of the tunning and coupling capacitors around the horizontal section as well for some crystalized solder joints in that area.

Posted on Jan 15, 2008

albertv29
  • 87 Answers

SOURCE: Rear projection tv screen is dark

This unit does not have bulbs it has tubes.What is happening is the coolant fluid in the picture tubes is contaminated with a fungus( blue and green).A repair shop should be able to fix this problem for about $250.I do not recomend fixing this problem youself,but when it is fixed this unit will look like new

Posted on Jan 12, 2009

  • 1 Answer

SOURCE: I have a 1998 Philips Magnavox projection tv model

mine is doing the same thing and it is the same tv same year

Posted on Jan 17, 2010

electrotech1
  • 1126 Answers

SOURCE: My 2001 60inch Philips Magnavox

It is the coolant that has allergy growing in the blue and green guns, it will not grow in the red gun. If you have the coolant change it will look just like a new TV, right now the video is being block, and kind of on the greenish looking. It should run about two to have the coolant changed in the guns (CRTs).

Posted on Jan 14, 2011

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2 Answers

I have a magnavox 52 inch tv the picture got a mirred look to it then went black but can still hear te sound can you tell me what's wrong


This is a very common failure on Projection sets. Its called a convergence problem.

You may have one or more of the following symptoms.
  • 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.
  • No Audio / No Video - Makes Chirping Sounds

You can see some examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Oct 17, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Can you replace the picture tube on a big screen maganavox tv?


yes it can be replaced.but the tubes are costly to get replaced.you can get the parts at www.partstore.com or at www.shopjimmy.com thanks.

Jul 11, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Old magnavox 52 inch big screen tv - screen rolls, jumps, loses c


the screen on my hdtv has alot of marks on it how do i get another

Feb 26, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

My tv has sound and no picture


This is a common problem with older Philip Magnavox projection sets. Over time one of the IC chips on the main power board begins to fail. You can find replacment chips and repair instructions on www.magnavoxhelp.com.

Jun 26, 2008 | Philips 60PP9202 60" Rear Projection...

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No Picture, No Sound


You can get a repair kit from www.magnavoxhelp.com for under 30.00 dollars.

Jun 15, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

I think I have the same tv. Its a philips 50 in projection tv.


Common problem with the older projection Magnavox TV set. The opto IC chip has failed. Try www.magnavoxhelp.com - They have instructions and kits on their site.

Jun 14, 2008 | Philips 9P5034C 50" Rear Projection...

1 Answer

No sound no picture


This is a common problem with older Philip Magnavox projection sets. Over time one of the IC chips on the main power board begins to fail. You can find replacment chips and repair instructions on www.magnavoxhelp.com.

Mar 28, 2007 | Philips 50P8341 50" Rear Projection...

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