Question about Philips Magnavox 51MP392H Rear Projection Television

1 Answer

51" Magnavox projection TV

Hi, we have a 51" Magnavox projection TV. It is almost 2 yrs old. The sound still works on it, but one day the screen just went blank and now there is no picture. Does anyone have any suggestions as to what may be the problem? Or has anyone else had this issue with theirs? THANKS

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  • 4 more comments 
  • cadge Nov 02, 2007

    picture and sound went away...can hear a chirp sound about once a second..

  • Anonymous Nov 22, 2007

    exactly the same problem as tonywhite's problem.

  • Anonymous Jan 02, 2008

    no power. Can't use remote nor manual botton.

  • scott4169 Feb 04, 2008

    tv went black all the sudden, still have sound

  • gxs01s Feb 12, 2008

    same thing. watching tv, walked away for a minute, came back black screen. Still has sound.

  • Anonymous Sep 18, 2008

    I have the same problem. What did they replace

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1 Answer

Same with mine. Two things that they have to install and they need the whole tv there to fix it and run it for a week. Cost 500.00!!!

Posted on Sep 30, 2007

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Posted on Jan 02, 2017

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sounds like a convergence chip problem...

here is my general post for the 51 inch you'll have to look at the link for the manual and check to see if you have the STK392-120 chips or somthing bigger in the 60"


51MP392H/17
you need 2 Convergence IC's STK392-120's (120's and 150's will work) of course order 2 of the same type I'm using replacement 150's they allow for a little higher heat and were cheaper ALSO you need to replace the 12 resistors with 6.8 ohm metal film resistors, make sure they are metal film! don’t skimp out here I did and then they blew and fried my IC's and I had to replace everything again!

Great reference link that I posted
pictures on, check out page 3
http://www.techlore.com/forum/thread/16736/Magnavox-51MP392H-17-51-quot--TV-has-double-vision/

Where I got my parts that worked:
Suburban Electronics
http://www.suburban-elect.com/
Manual Library you should find all you need here:
http://www.techlore.com/group/2/list_downloads



What you need:
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chips
(12) 6.8 Ohm Metal Film resistors
set of star screw drivers
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good leaded solder, and flux

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I had the a similar issue. My TV broke - no sound and no video but the power light was still on.

I gave up and called in a repair tech.

He fixed my TV in less than 30 minutes by replacing a bad IC chip. He informed me that this is a very common problem with the older Magnavox TV sets and that its typicaly the same chip that fails.

I spent over 300.00 for the repair. The parts cost less than 20.00.

To help others in the same boat I put together a how to guide and parts kit on www.magnavoxhelp.com .  I'm not sure if it will work for you but it may be worth a shot.

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take the broken piece to the hardware store and have a piece of plexiglass cut the same size. thats what we did and it worked really well.

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