Question about Toymax Magnavox 37MF331D 37 in. LCD TV

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My magnavox tv worked good turn it off later tryed to turn it on and it wont i notice the green light on the power button wasn't on

Unplugging it and plugging it back in still nothing my ps3 is pluged in right under it and it works

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  • Toymax Master
  • 74,383 Answers

Fault with the main power supply regulator section. Either it will be on a separate board, or on the part of its main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Nov 27, 2014

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Posted on Jan 02, 2017

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SOURCE: Magnavox 32mf231d - Just a blinking green light, No Power

I had this problem, but saw other places that it was a cheesy capacitor on the power supply circuit board causing this. I opened it up and took the power supply board out and it was obvious which capacitor was bad...top was bulging and had black stuff on it. It was rated 2200 uF @ 25V...got a new one @ Radio Shack that was 2200 uF @ 35v. Soldered it in (I stink @ soldering, but gave it a shot and it was EZ). Watching the first weekend of college football w/o waiting on a flashing green light for up to an hour so the TV would start! I'm going to try to find the other websites that directed me to this to say THANK YOU...BTW my brother used to have fits with several Magnovox TV's and thier power supplies back in the old tube style TV days. I thought I didn't need to worry about this with an HD flatscreen, but was wrong. I will think twice before buying a Phillips/Magnavox/Funai/whatever else they are again. They have a long list of complaints and I believe a class action lawsuit to refer to about this problem. They should have stepped up and done something!

Posted on Sep 05, 2009

maatmartin7
  • 1212 Answers

SOURCE: I have a Magnavox 37MF32id137 we turned the tv off

You have a bad Capacitor. Look for a bulge on this cap. Location is 2074 and it is a 25volt 2200MF cap gone bad! And there may be another very close by that may also need replaced...you will see it ,and is bulged or skinned

Posted on Feb 14, 2010

eagle338
  • 4889 Answers

SOURCE: I have a Magnavox 37MF231D/37 LCD TV THAT DOES NOT

When you mean the light blinks, do you mean it reverts to standby mode? It is confirmed that there are some shorted components in the circuit. In addition to the diode I would suspect that you also have some faulty components that regulate the amount of voltage such as voltage regulators ICs, resistors etc., Replace the diode and if problem persists, then let me know and we will troubleshoot using a service manual.

Sai.

Posted on Nov 08, 2010

maatmartin7
  • 1212 Answers

SOURCE: Have a Magnavox 37mf321d LCD TV, one day, went to

Although a capacitor may look good, it may be weak or bad. Here is what you will have to do. Replace capacitor (location) 2074 which is a 25 volt 2200Mf at 105 degrees. Replace capacitor (location) 2081 which is a 35 volt 1200 Mf at 105 degrees. And you should change capacitor 2066 which is a 16 volt 10Mf at 105 degrees. Please be careful with the last cap mentioned. You can easily tear the PCB trace if you are not extremely careful. This should bring your TV back to life. Thanks for asking and show a few hands of support!

Posted on Dec 25, 2010

nadeemnazar
  • 300 Answers

SOURCE: I have a Magnavox 37MF321D/37. There is sound to

having problem with display . your lcd is get damaged change it with a new one

Posted on Apr 26, 2011

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Magnavox 37" model 37mf231d-37 wont tun on when i hit power button the screen lights up for a secongd and turns right back to black and the power button green light comes on and right back off I found


Your power supply is weak. If you think you can repair this I will tell you how. If you cannot do this,find someone who works electronics and share this repair. Two capacitors are bad. When pulling the back cover off, you may see one or two capacitors bulged. Even if they look good....replace these capacitors. The locations are numbered and, the capacitor having a value and temperature of 105 degrees.. Location of the first capacitor is 2074, value 25volts @ 2200 mf @ 105 degrees and will most certainly be bulged. The next capacitor may look fine....replace it. That capacitor location is 2066, value is 35 volts @ 1200mf @ 105 degrees. When you replace these, please be sure to get the polarity (positive leg and negative leg) of these capacitors seated correctly...this is a must. This will correct your TV. You will save lots of money, because you asked. Thanks for listening ..good luck...we will be here for your next repair.

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1 Answer

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Tries tv unplug,replug it back in like about an hour later for the tv to do a resetting itself back to the factory setting.The tv now should be working again.If the tv still have the same result.Mean ur tv the tv power supply board it is the problems and the causes.That the board where the tv power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay.com to buy a whole new refurbish tv power supply board for the replacement.

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Hello,

first, press the channel -/+ button on the TV. If that doesn't turn on the TV, then it means you have to replace the bulb of your TV. The bulb is most likely dead.

Replace the bulb and your TV should be restored.

Let me know if you need further assistance.

Regards.

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I had a similar problem with my magnavox tv with the blinking light issue. Eventually it just didn't come one anymore. Looking at other forms they said the problem was a bad capacitor number 2074 located on the power supply board. When I opened my tv, I noticed that the capacitor was bulging and burnt up. I bought a new one labeled 2200uf 35v and did some solder to attach the new piece. Put the tv back together and it works like new. No more blinking light. I hope this helps.

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