Question about Toymax Magnavox 47MF437B 47 in. LCD TV

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Are magnavox tvs 47mf437B/37 know for power supply failures?

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6ya6ya
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Posted on Jan 02, 2017

budmrtn
  • 11361 Answers

SOURCE: have a magnavox 47mf437b no picture has green

Please read my guide first:
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com just make sure to use caps with low ESR, 105c rating such as PANASONIC FM or FC series.
Please post back what you find.

Posted on Dec 06, 2010

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I need help in identifying a problem with my Magnavox Flat screen TV. Model ID: 47MF437B/37. Serial # BZ5A0744161658. When turning it on. Get no picture or sound just the LED red light flashes with a...


These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/
Blinking codes details to many popular brand TVs are given. Surf the site with patience.
If blinks continue without any pause, the main board is faulty.
Circuits to Magnavox and Philips are alike; and the blinking codes too might be.
Counting of number of blinks to Philips TVs is entirely different to that of other brand TVs. It is not a direct count procedure. The site have details about how to count the number of LED blinks [Fault Codes] to Philips brand TVs are given; along with details of the faulty circuit location.

Jan 31, 2015 | Magnavox Televison & Video

1 Answer

I have a magnavox 47mf437b/37 tv. Had no picture at first. I replaced 4 capacitors on the power supply board and everything works great except I now have four very thin line horizontally across my scr


If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Line, faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.

Nov 14, 2014 | Televison & Video

1 Answer

Magnavox 47MF437B/37 works fine until turned off. The red standby light comes on but the TV will not turn back on again. I have unpluggged the TV then plugged it back in again. Sometimes the the TV will...


Hello,

power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Hope it work with the solution

Jun 12, 2011 | Toymax Magnavox 47MF437B 47 in. LCD TV

1 Answer

37 INCH LCD MAGNAVOX TV WILL NOT TURN ON. MUST BE


This problems,very common in LCD tv,after the tv was in used about a year or two.The new technalogy LCD tv don't handle heat very well,not like the old CRT Tube Tvs.The power supply board tend to have bad capacitors componnents leakage,that bulges up it top or puff up gases escape,that why it take times or couples pushes to the power botton to turn the tv on.U know basic electronic's,and have soldering tools and solders?Take the tv aparts,check for these bad capacitors,that bulges,puff up in the power supply board and replaced them,than ur power will work normal again.Or tries Websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Apr 29, 2010 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Powers on but no picture or sound


i need a screen off a 47inch magnavox if u coudent fix urs and ur interested in selling me ur screen let me know
(47mf437b/37) noe28cervantes@yahoo.com

Jan 04, 2010 | Toymax Magnavox 47MF437B 47 in. LCD TV

3 Answers

Power Light


The most likely failure is the main power supply. You may be able to identify it with the following instructions:
Unplug your set overnight to allow potentially hazardous voltages to discharge, remove the back panel of the set so you can see the guts.
Look for a smaller board with larger parts on it; some cylindrical (capacitors), others block-like and relatively large (chokes and transformers).
You should also see a relationship between the board and the incoming AC.
Check the board for a label or if not present, a stamped-on number.
Call the manufacturer's service center with your TV model number and the number found on that board and inquire about repair/replacement costs; if both are offered, they won't be that much different.
If you must buy a new board, don't dispose of the failed one as there are smaller companies that can repair it for less than the mfr. and then keep it as a spare as this problem will likely arise again.

Unfortunately, the Magnavox name is owned by the Japanese Funai company which is known for poorly designed and not very reliable products.

Sep 07, 2009 | Toymax Magnavox 47MF437B 47 in. LCD TV

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