Question about Philips Magnavox 52MF437S/37 52 in. LCD TV

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Magnavox lvd tv

It will turn on and show a picture for less than 10 seconds then goes to black. Can't figure it out.

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Posted on Feb 23, 2009

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Once it goes black can you bring up the tvs menu?

If yes its a signal issue
If no tv is in need of service. Call 1-888-744-5477 to get referred to a local servicer.

Posted on Sep 16, 2008

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Dec 20, 2015 | LG Televison & Video

1 Answer

Tv screen goes black ater 10 seconds


there could be several things causing this, most often it's a defective inverter, or a bad CCFL lamp. You could also have a problem with 24vdc output from the power supply, or "backlight on circuit from the main board. Get a proper diagnoses.

Sep 08, 2012 | Westinghouse TX-47F430S 47 in. LCD TV

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I have a Magnavox 15MF605T 17 that when the power button is pushed it goes green for a couple of seconds then turns amber. No picture, sound, etc. I unplugged the TV for about 10 minutes and when I...


Try to turn it on with a remote if one is available. If you don't have the original remote you can look up the universal code for the cable or satellite remote. Also try to turn it on with the input source(vcr,video game, cable box,etc...) on first. I have the same TV and if it has no signal prior to manual power up it will go to standby mode.

Jul 08, 2011 | AOMNI Corporation Magnavox 15MF605T/17 15...

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I have a TDA-03211C Polaroid TV. It powers on, shows the logo for less then a second, goes black, then flashes the cable channel and goes black again. No response from the control panel, and the power...


The power supply board have more than just two capacitors problems,could be anythings else like a diode,transistor or those transformers on the power suuply board,u have no trouble shooting skills or tv repair experience,will never figure it out.Tries websites like Shopjimmy.con,Ebay.com to buy a whole refurbish power suply board for the replacement.

Dec 29, 2010 | Polaroid TDA-03211C 32 in. LCD HDTV

1 Answer

Picture Size


Keep in mind that not all programs and show are in widescreen format. When set to normal, you will get those black bars on the sides because the program is sized for the older TV's. Some TV's will have a zoom option, but that will cut off some of the top and the bottom of your picture.

Until everything goes widescreen, you are stuck in normal with those black bars or widescreen with the fat people.

I hate distortion in my TV image, so I am perfectly fine with my TV on normal.

Good luck.

Jul 14, 2010 | Philips Magnavox 42MF521D/37 Television

1 Answer

My magnavox 42mf438b lcd tv will be fine for about 10 minutes when i turn it on, then the screen goes completely black but it still has sound. it stays like this even if i turn it off and back on. i can...


that set is highly rated by users .. it first came out in early 2009 (i think) so you might check to see if any warranty remains ... the display is illuminated by several lamps .. each lamp has its own high voltage inverter .. all the innverters are powered by an output of the low voltage power supply (often 18 volts)... i would suspect a problem with that low voltage power supply.. either a bad capacitor or a thermal issue .. .. ..

Apr 10, 2010 | SNK Magnavox 42MF438B/27 42 in. LCD TV

6 Answers

Problem with Magnavox 15MF605T/17B


Hi SgtHoagie and anyone else:

I ran across this problem too, at 1:30 this morning. At that time I had to get out of bed and try to figure out what the hell happened. It seems that my flat panel TV somehow got switched over to the computer monitor mode. When this happens, the light will turn an amber color. On the bottom of your flat panel you'll see some very small buttons, marked "MENU," "CH" "VOL" and "SOURCE." You'll want to click on the "Source" button and that will switch your flat panel back to the TV mode. Your flat panel TV can also be also used as computer monitor.

Feb 14, 2008 | Philips Magnavox 15MF400T 15 in. LCD...

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