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My magnavox 26mf23id/37 lcd tv keeps blowing the 4A ceramic fuse when power is applied

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5 Suggested Answers

  • 101 Answers

SOURCE: replacement of fuses on Philips 37PF7320A 37 in. HDTV-Ready LCD

Is the fuse in the plug okay?

If the fuses are not blowing when you are turning the tv on, this suggests that the PSU primary side is okay.

Since you have opened the TV up, I would suggest probing around with a multimeter however I do not want to let you harm yourself or the TV.

Look for any:

http://en.wikipedia.org/wiki/Capacitor_plague

on the power supply


Posted on Aug 13, 2008

thekleppinge
  • 5 Answers

SOURCE: My magnavox 37mf321d 37 LCD tv

This is a bad power supply and an easy fix. Their are several electrolytic capacitors on the power supply. If one is bad it will have a bulge on the top. Mine had a bad 2200uF and a bad 1200uF capacitor. About $7 worth of parts at Radio Shack. Radio Shack had the 2200uF but it was axial leads instead of radial. (leads come out of each end instead of one end) but It will still fit. They only had a 1000uf capacitor so I combined that with a 220uF capacitor and wired them in parallel. Make sure you put them in with the correct polarity.

Posted on Dec 06, 2008

  • 13 Answers

SOURCE: 32 in Magnavox tv model 32MF231D/37

An earlier post of the smaller model of this with the same problem said to remove the metal cover over the power supply.

I have the 26MF231D and it worked great afterward (even though you can't mount it)

Here is how you remove the cover.
http://www.flickr.com/photos/88002248@N00/sets/72157611665895426/


Posted on Dec 26, 2008

dsacco86
  • 1077 Answers

SOURCE: 42" LCD HD TV keeps blowing fuses.

A ceramic fuse stands up to heat better than a non-ceramic fuse. I'm no pro, but it sounds like your power inverter board maybe bad. There are replacements out there. Good luck

Posted on Jan 19, 2009

  • 90 Answers

SOURCE: replacement of fuses on Philips 37PF7320A 37 in. HDTV-Ready LCD

5 amp and 1 amp - slow burn fuses -- they have them at radio shack under 3 dollars for a set of three

Posted on Feb 22, 2009

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2 Answers

Put new 125V 4A fuse in and it keeps blowing it out.


Something on the powre supply board has shorted out.
Repair the board or buy a new one.

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Ceramic fuse blows on power board


the power board is shorted and will need replacement. Yo can get the power supply board from www.tvrepairworld.com

Mar 16, 2013 | Sony BRAVIA KDL-40EX400 40" LCD TV

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Magnavox 37MF437B/37 keeps blowing fuses


Either a short somewhere---which fuse? The one at the power cord or what?

Other possible reason is wrong fuse----many of the fuses in these sets are special-----if you go and buy some Generic ones--hardware store or Radio Shack the fuse even with same amperage/voltage rating may blow at turn on instantly for no reason------

Dec 08, 2012 | Philips Magnavox 50ML8105D 50" HDTV DLP TV

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Magnavox Television


There is an 8amp 250v 5mm x 20mm ceramic slow blow fuse on the power supply board inside the TV. The picture below shows the board with the fuse circled in yellow. If you had a big enough power surge it may have damaged other parts of the power supply beyond the fuse. Look for burn marks on the power supply board when you replace the fuse. If you need additional information just let us know tech@ccl-la.com
7_25_2012_6_32_04_pm.jpg

Jul 25, 2012 | Magnavox 40MF430B LCD TV

1 Answer

Watching the TV and heard a "pop", it went dead. Opened up the back and found a blown 4A 125V fuse. Replaced fuse and plugged in TV. Fuse blew instantly when I plugged in the TV. Sylvania...


The power suply unit may be dead......if the fuse blows instantly it means that the main input is short.
possible parts damaged :the diodes from the mains, the power tranzistor and the ic from the primary part and other components around them.
First unplug the tv, unload the mains capacitor (using a light bulb) check all the diodes from the rectifing bridge, check for any shortened semiconductors or blow resistors.


BE VERRY CAREFUL !!! THERE IS A RISK OF ELECTRIC SHOCK ,IF U DON"T KONW ANY ELECTRONICS TAKE IT TO A SPECIALIST

Feb 19, 2011 | Sylvania LC370SL8 37 in. LCD Television

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Philips Magnavox 37" LCD Flat Screen 37MF331D Have replaced power board,main board,hit power a faint light on whole screen for about 2 seconds the nothing.


Disconnect the LVDS Cable that runs from the small signal board to the display panel and apply power,if the screen comes on,the Small signal board (aka Scaler Bd ) is the faulty board. other than that,all that's really left that has gone bad for me is the logic board.

Feb 19, 2009 | Toymax Magnavox 37MF331D 37 in. LCD TV

2 Answers

42" LCD HD TV keeps blowing fuses.


A ceramic fuse stands up to heat better than a non-ceramic fuse. I'm no pro, but it sounds like your power inverter board maybe bad. There are replacements out there. Good luck

Jan 18, 2009 | Vizio L32 32 in. LCD HDTV

2 Answers

Magnavox 26mf23id/37 will not stay on


Replace capacitors 2079 and 2080 with 1000 uf, 50 volt caps. They are on the power PCB at the top as you look at the unit from the rear. Barneyluc.

May 23, 2008 | Televison & Video

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