Question about Sharp Aquos LC-42D62U 42 in. LCD HDTV

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50mf231d/37 magnavox plasma

No power. 4 blinks

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  • cgsimmons Nov 12, 2008

    I downloaded the software upgrade from Magnavox, unzipped it and loaded it to a flash drive. The tv cannot find the upgrade on the flash drive. I tried a different flash drive, same result. The flash drive do have a FAT format as required. I'm not even sure the tv will power on now. The green light come on, then the red light starts blinking.

  • Anonymous Nov 12, 2008

    gfhjghmbn

  • johndenton7 Dec 01, 2008

    I have the same problem with this TV 50MF231D/37, it will come on, i will unplug it, plug it back in again, will not come on. I will do this this 10 times and it will finally come on. The tv makes a clicking sound everytime i do this. Can you help me on this. Thanks John

  • amosmagoo Dec 11, 2008

    Won't turn on just blinks on my magnavox plasma tv 50MF231D

  • amosmagoo Dec 11, 2008

    I have the same problem and have gone onto Magnavox's website to find the software and connot find it anywhere. Does anyone have any idea where it may be or a weblink to it?

  • karinavg5 Jan 05, 2009

    I was wondering if any one knows what my problem might be. I have the same magnavox 50" I turned it on and everything was fine and all of a sudden it shut off by itself and tried turning it on and no luck then unplugged everything checked extension everything is fine I don't even get the clicking sound it makes or anything i think its a power problem. I just won't turn on.

  • MotoM Feb 10, 2009

    I have the same problem. The red light would blink 4 times in a row. I called Phillips they told me to get a memory stick( flash drive) and up load their soft ware from their site. I plug the stick into the computor and uploaded the software. I then plugged the stick into my TV on the side. A screen came up and the software loaded on the TV successfully. The red light then turned to green. However, I now have to unplug and plug the TV several times for it to turn on. It works fine but once the TV is turns on, but when I turn it off and it cools for a while I have to repeat the same proceedure off plugging and unplugging. Can someone help me???

    Mark

  • alwaysboatng Feb 18, 2009

    I have the same problem had the tv for just over 2 years and did the upgrade and and now no more red blinks just won't turn on until i keep unplugging ect. BUT once the tv is on and warmed up i can leave turn it off on all day works great.... turn it off go to bed and in the morning starts all over agian ... once it comes on and warms up and works great off and on all day then repeat all over everynight.... 2 grand in the toilet...

  • Anonymous Mar 22, 2009

    where are these capacitors located?

  • jokin7801 Sep 18, 2009

    can somebody send me pics of the problem compacitors. so many of the darn things. thanks jokin_jt@yahoo.com

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OK I have just taken care of both of these problems and now I want to share it with you DIYer's. As for the blinking red it is a software upgrade...go here...http://www.m4c.magnavox.com/cgi-bin/dcbint/cpindex.pl?scy=US&slg=AEN&cat=FLAT_TV_CA&sct=PLASMA_EXTRA_LARGE_GT43_SU&grp=TV_GR&session=20090902212032_75.92.128.105&ctn=50MF231D/37&mid=Link_Software&hlt=Link_Software....and download the software to your PC. Then unzip it to a USB flash drive. Power off your TV. Stick the flash drive into your TV's USB slot, found on the left side, facing the TV. Power it up and let it do it's trick. Pull out the flash drive when instructed. That's it.
Now for the power problem. I noticed that my TV was taking longer and longer to fire up. Once on it worked great. Well this morning it didn't come on. I heard the usual relay click then a few seconds later...two more clicks and nothing. The green LED stays lite but it's dead in the water. So I started surfing the web for common problems found with this particular model. I came upon this forum and saw something about a couple of capacitors. So I decided to look into it. I purchased the service manual online for around $8.00 at https://www.completeservicemanuals.com/philips/magnavox/plasma-television/50mf231d/37-service-manual/prod_677.html. Not that I thought I would need it but it doesn't hurt to have it. So I took my TV off the wall and placed it on my bed face down. Be very careful because this TV is heavy!!! You will need to remove the stand or wall mounts first. Then there are 44 screws holding on the back, 32 long and 13 short. Pull the back off from the top of the TV first, set it off to the side. Now your looking at the workings...in the center is the power supply board. Oh yea please make sure you unplugged from the wall. There are 8 wire connectors to the board, 5 of them come off by squeezing the clip on the back, the other 3 just pull out. OK, there are 8 screws holding down the board to the chassis. Before lifting the board, locate the capacitors first. If the top of the TV is away from you and the bottom is near your knees (assuming it's on your bed) look at the center bottom of the power board. Locate two capacitors that are identical and side by side. Their values are 3300uf 10V. I found that these two buggers were raised on top, kind of bubbled. (if needed I have pictures of the power board, email dstafursky@yahoo.com). I picked the replacements up at a local electronics store for less than $5. I simply replaced them and reassembled the TV. It works killer just like when it was new.
Good luck.

Posted on Sep 03, 2009

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I had the exact same problem with my Magnavox 50mf231d/37. I had come to the conclusion that I would replace the power supply first. As I looked closer at the power supply, I noticed that there were 2 capacitors that looked like they were going to pop open. I took a shot and replaced both 3300uf/10v capacitors (purchased locally from an electronics shop) for about $5. Re-installed the power supply and it works great again. I don't recommend soldering components yourself, unless your qualified. I did a lot of looking around the web for answers to this problem, and they were hard to find, so I vowed if I was able to fix it myself I would take a minute to post whatever worked for me, so here you go. Hope it helps.

Posted on Nov 24, 2008

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I have the same problem but i play with it by pluging it in multiple times and i hear it click on then off eventually the time between it clicks on then off is longer until i finally get it to stay on .I have to do that everytime i use it . Also the update wont work for me either tried everything. It must be with the power supply becuse once i get it on it stays on, and if i turn it off after its been working for a while it comes right back on perfectly. Only when i leave it off for a few minutes the symptoms start right over.This is what i do for about 5 minutes of plugging it in and out it flicks on and then off about 2 seconds later after that ii finally get it to flck on then off about 6 seconds later. 5 more minutes of pluging it in and out it takes about 10 seconds to flick off this is when i know it is about to work.finnally the green light will stay on and the tv wont flick off you can turn it on and of with the button wait 2 min to see if the picturecomes on repeat last step until it works.This means everything works great exept for the power supply for enitial startup. I beleive its a capacitor . I will check and report back.

Posted on Nov 24, 2008

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All it is is a reset button that you have to press INSIDE the TV that involves taking it apart

Posted on Jul 04, 2009

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I found my capacitors bubbled also, had a electronics buddy replace them with 3300 26volt and the set works now.initially I had to restart about 3 times but now it works perfectly, but I cannot get the new software to download to the set. my version is 12/26/06

Posted on May 14, 2009

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Hi this is dee from deesfunhouse I had the exact same problems with my magnavox 50mf231d/37 as you were having, so i took your advice. I had the capacitors replaced but when I put the board back in I now get these symptoms...1 I get one click instead of two now and In the front nothing on the screen but the green led light comes on there are no red light that come on. when I turn it off the green light just goes out there is no red light , no picture, and no click. In the back on the power supply board only one of the two green lights light up. what could have cause this? ...I used to get the same symptoms you did before I replaced the 2 capacitors but now I'm getting nothing...please help meI was going to replace the power supply board (LJ44-00108C PS-504-PH Part REV: 0.7) do you think this is a good idea? or did I hook something up wrong please help me with this!!!!!!!

Posted on Nov 18, 2009

  • Tompaulroman Apr 15, 2011

    Did you fix the tv? Please tell me what you did, I have the same exact problem please email me tompaul.roman@gmail.com

  • jamad379 Jun 02, 2011

    IF i replace the entire board this will work? let know jamad379@yahoo.com

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Look on the Power supply about in the center towards the bottom of the board. There you will see two medium size capacitors rated at 3300uf, 10 VDC. The top of the capacitors will be bulged up more than the others on that board. I replaced them with two 3300uf, 16VDC high temperature capacitors. TV works fine now.

Posted on Sep 25, 2009

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OK, I fixed a Magnavox 50mf231/37 today 12/15/12

Here is what I have to offer.
Unit face down rear cover removed.
Standing at the bottom of the tv
Plugged it in, clicks, lights and then clicks out with a green light flashing on a secondary board located on the upper left of the power supply board which is in the middle of the tv. Did some research and found this link and looked around, Found the 2 caps bulging out the tops which are almost dead center towards the bottom of the power supply board right next to each other just to the left of a heat sync. Ordered them, replaced them and I have a fully functioning tv. No uploads needed or anything. Noticed people wondering about the polarity. Not only are the caps marked ( long silver line is the negative side ), but the leads, one long + and one short - ... Now the circuit board is also marked + and the negative is a series of lines. They have to be installed correctly or they will fail and could get ugly. Radio Shack DOES NOT carry them. I found several places online to order them but an Ebay seller had sets of 2 for $6.50, free shipping. Some of you in bigger cities may be able to source them locally for cheaper as I did find them online for .69 cents a piece but shipping extra.


I do have pictures for anyone trying this repair. Makes sure you have a good soldering iron and patience !!!
Pictures shows the cap and the board with one cap removed, the other blown cap bulging out the top still installed next to the heat sync. Hope this helps. I haven't had to do anything yet. Although I am going to go download the update and install it soon...


50mf231d/37 magnavox plasma - 12_15_2012_10_48_20_pm.jpg12_15_2012_10_53_16_pm.jpg

Posted on Dec 15, 2012

  • Behind_Blue_Eyes
    Behind_Blue_Eyes Dec 15, 2012

    OK, I fixed a Magnavox 50mf231/37 today 12/15/12

    Here is what I have to offer.
    Unit face down rear cover removed.
    Standing at the bottom of the tv
    Plugged it in, clicks, lights and then clicks out with a green light flashing on a secondary board located on the upper left of the power supply board which is in the middle of the tv. Did some research and found this link and looked around, Found the 2 caps bulging out the tops which are almost dead center towards the bottom of the power supply board right next to each other just to the left of a heat sync. Ordered them, replaced them and I have a fully functioning tv. No uploads needed or anything. Noticed people wondering about the polarity. Not only are the caps marked ( long silver line is the negative side ), but the leads, one long + and one short - ... Now the circuit board is also marked + and the negative is a series of lines. They have to be installed correctly or they will fail and could get ugly. Radio Shack DOES NOT carry them. I found several places online to order them but an Ebay seller had sets of 2 for $6.50, free shipping. Some of you in bigger cities may be able to source them locally for cheaper as I did find them online for .69 cents a piece but shipping extra.


    I do have pictures for anyone trying this repair. Makes sure you have a good soldering iron and patience !!!
    Pictures shows the cap and the board with one cap removed, the other blown cap bulging out the top still installed next to the heat sync. Hope this helps. I haven't had to do anything yet. Although I am going to go download the update and install it soon...


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Go to the magnavox web site and download the software upgrade onto a flash drive. PLug it into your television and power up...your problem is described exactly as the reason for the upgrade.

Posted on Jul 08, 2008

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Is there really a reset button? I replaced the capacitors and downloaded and installed the software update and still no picture. Everything powers and have sound but no picture.

Posted on Apr 24, 2010

  • ffoklacity Apr 09, 2011

    Yes, there is a reset...... it is a small black micro button straight up from where the power cord plugs in, worst part...........it is internal. I pressed the button with the power off, then plugged it in and pressed the button with the power on.

  • Tompaulroman Apr 15, 2011

    So you opened it, pressed the rest button, plugged it in, Powered it on with the back cover off and pressed the reset button again?

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Is this for a sharp or magnavox?

Posted on Mar 14, 2008

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Red blinking light on a Magnavox Plasma TV


Here is the solution. For less that 100$ your Magnavox Plasma TV. Model # 50MF2310/37 will be running like a champ.

Issue:

Magnavox Plasma TV. Model # 50MF2310/37 screen has no picture. There is no sound, TV comes on and then after a few seconds clicks and screen remains blank.

Cause:

On the main power circuit board to Capacitors are prone to failure from over load. The caps are 3300uf 10v 105+c capacitors located to the left of the AC power input.

Service:

Magnavox will refer you to a service center. They will advise $$$ for an inspection. They will also want to charge upwards of 500$ to replace the entire board.

Solution:

1. Unplug your TV
2. Disconnect all connections from your TV
3. With assistance lay your TV on its face on a non-scratching service
4. Remove the back panel screws.
5. Lift back panel off
6. The central board is your main power board.
7. Remove all wire harnesses from the main board.
8. Remove all screws that are holding the main board in place.
9. Lift the main board out and carefully place it into a non electromagnetic pouch.
10. Take the board to a Circuit Board repair shop.
11. Have them replace the the above mentioned Caps.
12. Re-install the board in your TV.

NOTE: Replace the caps with 3300uf 16v 105+ high temp caps(preferrably Japanese caps)

This fix cost me 80$ and my time to search for other who had the same issue. Try searching for Magnavox Plasma TV. Model # 50MF2310/37 bad circuit board or Magnavox Plasma TV bad capacitors or Magnavox Plasma TV bad ciruit board.

Hope this all help, Magnavox is should take ownership for this problem and recall any tv's that have these caps in them. The worst part about this is that teh **** from the repair center that was paid 100$ to check the TV, stripped out the screw holes and damaged the case for the TV.

Portland Laptop Repair was awesome. They repaired the board and it looked like new. Check them out at http://www.laptopportland.com/

Jeff G
Portland, OR

Feb 10, 2008 | Akai PDP4294 42 in. EDTV-Ready Plasma...

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