Question about Philips Magnavox 51MP392H Rear Projection Television

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Tv philips my tv philips works good but after 5 minutos it turn off

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Hello c_guerrero1,

This may be the shutdown circuit activating due to excessive current I would check the Horizontal Outout transistor, and the IHVT Intergrated High Voltage transformer. These are usually the cause of these problems. I would advise getting this repaired at a TV repair shop, due to the nature of the problem and the section that may have the problem.

Thank you
Shuttle83

Posted on Sep 14, 2008

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After being off for awhile.... and then we turn it on .... the unit turns on ok ..... but after 10-30 seconds... the tv turns off..... turn it on again.... 10-30 seconds.....goes off..... after 5-7...


I had a similar problem with my 42 in Philips LCD HDTV.


Here was the problem. My Power Supply Board had several bad capacitors. I opened my TV (warranty was expired of course) and found four bulged capacitors on the PSB. Many major electronics companies Philips/Magnavox, Sony, Panasonic, and others were sold capacitors that failed in 2-5 years instead of 10-20. The capacitors fail prematurely due to a lack of preservatives. Unfortunately, they were installed in all sorts of devices and cause a wide range of failure problems.


Here are some options for you.


1. Have it fixed by a professional $$$$$$$??????? (Is it under warranty?)


2. Open your TV and find PSB. (The board that the power cord plugs into) Check for faulty caps. If you find some (bulged or leaking) bad caps replace the entire board. The entire board costs around $250 right now because they are in high demand right now. They can be found at tv-part.com but supplies are limited. I would definitely shop around though.


3. Remove and then replace individual faulty caps. This takes some soldering skill.

Caps are inexpensive and if you can take care of it yourself it will save you hundreds.


This may be your problem. If you determine that it might be.

I have a Tip/How TO tutorial on this site that may also help. It gives step by step instructions for replacing caps on PSB #715t2432-2. If this is your board you are in luck. Here is the Link: Fixing the Philips Turns/shuts off on its own problem. I'm working on uploading pictures to help guide people though the process as well. Let me know if I can do anything to help.


Hope this helps and if it does please rate it accordingly. Good luck.

Dec 11, 2010 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

1 Answer

NO Hay una correcta convergencia


Pues me llego un tv igual y cambie algunos electroliticos de la seccion vertical y se corrigio el problema por 5 minutos y no e visto mas avance ya que despues volvio a lo mismo. saludos

Dec 24, 2009 | Mitsubishi VS-60609 60" Rear Projection...

1 Answer

Turning off by itself


This TV probably needs the convergence amp IC's replaced. When they go bad the TV will not turn on.Call a good TV Tech and tell him you want the IC's upgraded to STK 392-150 instead of the original STK 392-120 and check all resistors in the circuit for proper value. They could be burned or open.

Jul 30, 2009 | Philips Magnavox 55P9271 55" Rear...

1 Answer

No picture


Replace BOTH of your STK ICs will have part number on them they are big black ICs.

Feb 18, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Blinking lights on philips 55P8341


5 volt protection is causing the set to go into protective shutdown. Check for shorted diode 6306. Part#934038020127
or shorted capacitor 2318. or faulty voltage regulator

May 18, 2008 | Philips 55P8341 55" Rear Projection...

1 Answer

Arch on top and bottom of tv


You can try adjusting the convergence manually, but this is not a good symptom for your TV to have.

Look at this Quick Start Guide, p. 7:
http://www.p4c.philips.com/files/5/51mp392h_17/51mp392h_17_qsg_aen.pdf

Mar 19, 2008 | Philips Magnavox 51MP392H Rear Projection...

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