Question about Philips Magnavox 51MP392H Rear Projection Television

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PHILLIPS MODEL 64P842 HAS POWER NO PICTURE OR SOUND

TELEVISION WILL POWER UP BUT NO PICTURE AND NO SOUND. ALREADY REPLACED BOARD IT WORKED FOR ABOUT SIX MONTHS AND IS NOW NOT WORKING ANYMORE.

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  • Edward
    Edward May 11, 2010







    Do you hear a chirping sound?

    Which board did you replace before? Was it for the same problem or a different issue?

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  • 38 Answers

I hate to say this, but this is why I've been trying to tell people here not to fix these sets. This is EXACTLY why I don't repair Magnovox any more. They just don't hold up to repairs. Those sets can have a bad small signal board or a power/deflection board. I'm sorry your having problems. Sound like the power/deflection board is working since you say it powers up. Some of those sets have a "daughter board" that plugs in on edge of the signal board "SSB" that go bad all the time. All the video and sound go through it. Just cut your losses and don't spend any more money on it. I hope it's something simple for you, but I'm affaid it won't. Good-luck.

Posted on Dec 24, 2008

  • Chrisry696 Dec 24, 2008

    If that is a 64P8342, the part# for an SSB moduel is 3139 127 25871 and cost around $200.00 or more. VERY common failure part. This will cause exactly what you describe. Will also cause all sorts of funky systoms as well.

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Trutech no picture no sound


posted on Dec 29, 2007 0%20stars.png
noavatar_s.png By nonexpert_s.gif Greasmonk
Rank: Apprentice
Rating: 0%, 0 votes

Heres what mine did:no picture no sound, when i hit the remote the indicator light went out....piece of crap is six months old, cant find any info on it, cant get a hold of anyone at Trutech.
So i took it apart, on the board that the power cord is attached to, i found six blown capacitors. There is also a big ass one in the middle of that board which looked ok but blew out the bottom.I replaced them, and im watching it as i type.
Its fairly easy but if your not comfortable soldering on a cheap circuit board, take it to someone.
I hope it helps, i think this repair will fix the other Trutech models with the same problems.
Eric
ed44309@hotmail.com

on Dec 29, 2007 | TruTech PLV16260 Television

1 Answer

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The inverter board is the high voltage board that supplies power to the back light lamps.

The inverter must be tested and eventually replaced.

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http://servicemanuals.vstore.ca/

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posted on Dec 29, 2007 0%20stars.png
noavatar_s.png By nonexpert_s.gif Greasmonk
Rank: Apprentice
Rating: 0%, 0 votes

Heres what mine did:no picture no sound, when i hit the remote the indicator light went out....piece of crap is six months old, cant find any info on it, cant get a hold of anyone at Trutech.
So i took it apart, on the board that the power cord is attached to, i found six blown capacitors. There is also a big ass one in the middle of that board which looked ok but blew out the bottom.I replaced them, and im watching it as i type.
Its fairly easy but if your not comfortable soldering on a cheap circuit board, take it to someone.
I hope it helps, i think this repair will fix the other Trutech models with the same problems.
Eric
ed44309@hotmail.com

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4 Answers

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Heres what mine did:no picture no sound, when i hit the remote the indicator light went out....piece of crap is six months old, cant find any info on it, cant get a hold of anyone at Trutech.
So i took it apart, on the board that the power cord is attached to, i found six blown capacitors. There is also a big ass one in the middle of that board which looked ok but blew out the bottom.I replaced them, and im watching it as i type.
Its fairly easy but if your not comfortable soldering on a cheap circuit board, take it to someone.
I hope it helps, i think this repair will fix the other Trutech models with the same problems.
Eric
ed44309@hotmail.com

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1 Answer

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posted on Dec 29, 2007 0%20stars.png
noavatar_s.png By nonexpert_s.gif Greasmonk
Rank: Apprentice
Rating: 0%, 0 votes

Heres what mine did:no picture no sound, when i hit the remote the indicator light went out....piece of crap is six months old, cant find any info on it, cant get a hold of anyone at Trutech.
So i took it apart, on the board that the power cord is attached to, i found six blown capacitors. There is also a big ass one in the middle of that board which looked ok but blew out the bottom.I replaced them, and im watching it as i type.
Its fairly easy but if your not comfortable soldering on a cheap circuit board, take it to someone.
I hope it helps, i think this repair will fix the other Trutech models with the same problems.
Eric
ed44309@hotmail.com

Nov 09, 2007 | TruTech PLV16320 Television

1 Answer

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