Question about Philips Magnavox 42MF521D/37 Television

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My magnavox 37mf321d 37 LCD tv

When I press the power button on the front of the tv it just flashes green. Thats all it does flash green no sound no picture nothing. PLEASE HELP

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  • Anonymous Jun 12, 2008

    I have the same problem. Push the power button and it just flashes green. TV never powers on. Does anyone know any solution?

  • Anonymous Jun 27, 2008

    I too have the same problem, green light on, black screen, when I have a pic., the sound may goes out. Have to turn it off, then on to restore the sound. All this seem to happen when first turned on for day. Now it turns off and on at will. Sometime get a loud screeching noise when sound goes out. Thought it was the cable connection, tech says its the TV. Bought this TV expecially for Superbowl Pat vs NYG so you know this TV is not old.

  • Anonymous Jul 09, 2008

    Same as the original poster. This tv is a piece of ****. I am about ready to kick it through the window. Thank you for listening.

    opt

  • skweeks Jul 21, 2008

    I have the thing, green power light flashing no pic or sound for .5 hour. Works fine after it gets going.

  • Anonymous Jul 24, 2008

    I have the same problem, green light on, black screen, when I have a pic., the sound may go out. Have to turn it off, then on to restore the sound. Takes a long time to get it to come on. Left tv on overnight but, now it doesn't work at all.

  • debmg3 Aug 04, 2008

    We bought the same TV from WalMart May of 2007 - and even bought the extended warranty on it - good thing we did - the power pad has gone out on it. VERY FRUSTRATING!! We have had the same problems listed her - but finally it jut won't even turn on anymore! Too expensive to fix (warranty company says) - so it looks like we will be getting a new TV - and not a MAGNAVOX!

  • rspence2 Sep 06, 2008

    I have the exact same problem. One month out of warranty. No help from Magnavox or HH Gregg, which is where I bought. I think what has happened is that Magnavox has made a bum product and it is just to expensive for them to stand behind their product. They don't have to worry about standing behind anything for me in the future or HH Gregg for that matter.

  • sugarbriches Sep 27, 2008

    green flashing lights, no picture, no sound

  • glewisut Nov 14, 2008

    I have the same problem.  TV is about 18 months old. Whenever we turn it on now (whether from the button on the front or the remote) the light blinks once or twice, but the TV takes at least 5 minutes to turn on... tonight, it took about 30 minutes to finally come on. I have not tried to update the firmware, has anyone tried that?

  • jessicapack Dec 15, 2008

    37mf321d 37 LCD tv.....bought at walmart in march of 2007....when i try to turn it on the green light just flash's....took me 30 minutes to turn it on today...can someone help me :)

  • Anonymous Dec 29, 2008

    I have a similar problem with my 2-year old Magnavox 50" plasma (Model No. 37MF321d). I have read over 50 posts on the internet of this power problem, where the audio and video just do not come on anymore sometime during the second year of ownership. Magnavox is no help at all. Some people have said that they fixed the problem my replacing a capacitor (no. 2074 on the supply board) from Radio Shack that cost about $5.00, but I cannot find part no. 2074 on the supply board. Can anyone tell me EXACTLY where to find the location of the faulty capacitor on the supple board? I have spent over two hours looking at all the small numbers on the supply board with a flashlight and magnifying glass and still cannot find it. Thanks if you can help.

  • nando_22_00 Jan 02, 2009

    Hi have the same problem
    tv is powered on w/flashing green light
    but no video or audio
    my husband thought it was the kids.
    because are little one loves going by the tv, and he told me that the tv is only 2 yrs old why would it go out all of a sudden
    well this forum just saved my kids butts!!! :)
    if anyone has advice on what to do and or a follow up on the previous post please let me know
    thanks


  • kkandco Jan 08, 2009

    I have the same problem.

    Seems like the Federal goverment could issue a recall on these peices of Junk or Magnovox would try to save the Phillips name.

    I know at this point I will never buy another Magnovox/ Phillips Product.They sould try to protect their name.

  • dixonengshan Jan 17, 2009

    magnavox 37" lcd 1080p

    This tv is only a year old. Was watching it this morning and it just went dead. Tried to turn power on but nothing. model 37mf437b/37.

    any suggestions?

  • Anonymous Feb 26, 2009

    my magnavox lcd tv went blank and i cant get it to come back on

  • rwgq Mar 05, 2009

    MAGNAVOX 37MF321D TV WILL NOT POWER ON. GREEN LIGHT BLINKS OVER AND OVER. TRIED TO UNPLUG IT TO RESET IT AND IT STILL BLINKS. SOMETIMES THE SCREEN FLASHES LIKE IT WANTS TO COME ON, BUT IT DOES NOT. This is my exact problem!

  • Anonymous Mar 20, 2009

    Mine does the same thing. I wait for it to stop. Press power again from the remote. Wait for the light to go off again. Press power again. And then it usually comes on. I'm just going to deal with it until we can get another one. I wish I knew what was wrong though.

  • mbsimonds Mar 22, 2009

    Same problem with my 37" mag. I replaced the caps and it still does the same thing. I read somewhere else that the 27mhz crystal may need to be replaced. Another $2 part. I've ordered one so we'll see.

  • Anonymous Mar 22, 2009

    I had the same problem, It cost me $220 for a TV repair guy to replace the power board. Now, I get a nice blurry pastel screen images for the first 5 minutes. I am so through with magnavox.

  • lianerush May 02, 2009

    Has anyone, anyone been able to solve this problem:



    No audio or visual and the green light blinks.



    HELP!!!

  • Lynn Runnels Feb 16, 2013

    Our tv won't come on at all. The cable box is working fine, connected it to different tv. The Magnavox will not turn on.

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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

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  • okaymetoo Oct 02, 2010

    On Oct. 1, 2010 I replaced the #2074 (marked on board) capacitor as suggested because it had a bulge and dark secretions on top. It is a 2200 uF 25V 105 degree. I ordered it from Allied electronics (www.alliedelec.com, 800-433-5700). The Allied stock number for this capacitor is: 852-7038. After installing this capacitor, the set worked great. Before I replaced the capacitor, the set had quit turning on and the green power light only flickered. I only needed to replace the one capacitor for the set to fire up like new; however, in case someone else wants to replace the other three capacitors, here is a list of all four found on the power supply board:

    2200 uF 35V 105 degree (2074 positon on board)
    1000 uF 35V 105 degree (2080 position on board)
    1200 uF 35V 105 degree (2081 positon on board)
    1000 uF 25V 105 degree (2082 position on board)

    A note about disassembly: There is a very small two-wire plug that plugs in at the very top center edge of the set to the far right of six items. Be sure to plug it back in up there and not down below somewhere.

    If you are a novice like me, go slow and take careful note of what you unplug from where. Also, you can go up on voltage for the capacitors, but the other specs should be consistent with what you replace.

    Good luck my friends. This Web site saved me at least $200.

  • Hawkeye Oct 28, 2010

    Replaced both capacitors like mentioned with values recommended then also replaced the switching diode with a 1N914 switching diode and now it works perfectly. You may have difficulty finding a 1200uf electrolytic for the 2081 position but just run a 220uf 35volt in series with a 1000uf 35volt. Radio shack price list: 2200uf = $4.39, 220uf = $2.59, 1000uf = $3.29, switching signal diode 1N914 = $1.19 with a total of $11.46 plus tax. Not bad for a $1,500.00 television. The guy was gonna throw it away because of the problem but I run a pc and electronics repair shop and he does my printing of my business cards and he was telling me about it and I informed him that I could fix it for him for a very reasonable price and I picked it up the next day and had it finished the very next day and he was very happy with the bill of $85.19 to have it repaired.

  • outfielder33 Nov 10, 2010

    I AM NOT A ELECTRONIC KINDA GUY AND LIVE IN SMALL TOWN THAT HAS NO ONE TO DO SOMETHING LIKE THIS SO WOULD IT BE POSSIBLE TO CALL ME AND HELP ME OUT? 843 217-2241 DON

  • IT_007 Dec 24, 2010

    I had the "blinking green light of death" aswell, at first I thought it was a bad switch and almost ordered it online. but decided to look for similar issues they all point to the leaky capacitor. thanks for the info. too bad that i had got rid of my old soldering iron.

  • IT_007 Dec 24, 2010

    thanks for the info, its been a while since i used the old electronics skills.. i was thinking at first may bad switch or sensor, but did a lil research first. I guess its time to fire up the old soldering iron. thanks again.

  • majiktrix9 Mar 10, 2011

    you dont live in indiana by chance do you? lol

  • TLStout Sep 24, 2011

    Ok, but assuming I don't know a lot about electronics, where do I find the capacitor? I had it apart and did not see anything that looked like it was buldging or leaking, but it may just be that I don't know where this capacitor is.

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I just used solution #1 with a 2200 microfarad electrolytic capacitor from Radio Shack to replace the bulged one I found. It had a very slight bulge in the top and a small deposit of black goo (electrolyte) on the top of the capacitor. Removed the bad one, replaced it with the new one (polarity in mind) and put it all back together. The problem is gone. Pressed the button and it started right up. 1.5 hours including the trip to Radio Shack.

Posted on Oct 13, 2009

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Can you please tell me the voltage and the actual board location of the 1000uF, 2200uF and 220uF capacitors that are failing on the power supply board of Magnavox 37MF437B/37 television?

Posted on Feb 22, 2010

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Solution #1 is the ticket. Radio shack has some caps that work, not identical, but they fit. You must remove rear cover, remove power suppy board. radio shack only has 1000uf and 220uf caps, so solder togethter and install in parallel, the 2200uf is axial so lay it on it's side to install. $8.50 in parts, and about a hour time. You must squeeze the wings together and use caution on the connector just above the power supply, the rest of the connectors just pull apart.

Good luck

Posted on Mar 29, 2009

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I solved this by turning the power on then pressing buttons on the remote randomly. Ofcourse I tried logigal buttons first but when that did not work I just started pushing them all and eventually I noticed that the green light turned solid and a moment later my picture was available. Sounds stupid but it worked.

Posted on Dec 02, 2008

  • John Peace
    John Peace Aug 12, 2012

    worked for me aswell

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The general problem with LCD type TV's is that the power supply fails. They are very sophisticated designs that are difficult to troubleshoot and generally best to just replace the module, but sometimes there is visible damage in some of the electrolytic capacitors (visibly bulged) and higher voltage rated parts can be substituted.
Hope Ya Fix It

Posted on Mar 05, 2008

  • jsj949 Jan 06, 2011

    i replaced capacitors and now i get a beep beep high squeeling sound as soon as i plug it in. can anyone identify this issue4??

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I have a magnavox 37mf321d i'm looking to buy a replacement screen if anyone is looking to sell Email to Krackinup@aol.com

Posted on Nov 14, 2008

  • jsj949 Jan 06, 2011

    I replaced the capacitor and now i get a beep beep squeel. no light on just squeel when i plug it in. can anyone help??

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