Question about Toshiba M24F51 24 in. TV/VCR/DVD Combo

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No power Tv has no power at all. Seems to be getting power everywhere. What could it be?

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  • gerruti Jun 13, 2008

    Lol I guess that seems confusing. The tv does not power on but does have juice flowing through to everything.

  • gerruti Jun 13, 2008

    Nothing will turn on tv, dvd, vcr. I have a tester that I ran through the board and it seems to be getting juice everywhere.

  • gerruti Jun 13, 2008

    Ok I have looked at everything and cannot find any noticeable damage to any of the components. Now your saying that I can find where the power button is and just touch my voltmeter to the board and turn it on? I haven't done that yet but I think the power IS stopping before it hits the power switch. I got this from my friends grandparents and they were told it would be cheaper to buy a new tv. It is only 2 1/2 years old so I figured I could fix it. How would I find exactly what capacitor or diode is bad, or could it be something else. I was in computer engineering in college so I have some basic knowledge of these things.

  • gerruti Jun 13, 2008

    How do you find the parts exactly. Like if the power ic is bad and I want to get a new one. What do I type into google. Also my voltmeter isn't digital, what one would you recommend? Preferably one from radioshack.


  • gerruti Jun 13, 2008

    Ok great. Now those look like they have more settings than my tester. What would I put the settings on when testing?

  • gerruti Jun 13, 2008

    Lol its ok I knew what you meant.

  • Anonymous Jul 13, 2008

    same problem

  • Nathan Ayers
    Nathan Ayers May 11, 2010

    what do you mean seems to be getting power everywhere? like the sound boots on and the dvd player and vcr both power on but the tube doesnt power up?

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*note it is never safe to open a tv to self service when it is plugged in. it can cause serious bodily harm,injury or death. and is best to leave to proffesionals.

do you see any blown capacitors on the pcb boards. that are puffy or bulged on the top? any fried black singes on the bottom? i assume your tester is a voltometer? if so then you can try to bypass the power button by jumping it from 2 connectors on the board with your voltometer and it should boot up or at least make a noise. if nothing happens then the power is stopping before it even hits the power switch. inwhich case the tv needs the pcb board replaced but it will probably be cheaper and easier to replace the unit as a whole.

Posted on Jun 13, 2008

  • 5 more comments 
  • Nathan Ayers
    Nathan Ayers Jun 13, 2008

    unless of course you feel you have the time to find the exact surface diode or capacitor that is blow get its rating and replace it which you can do if youd like. and solder it in

  • Nathan Ayers
    Nathan Ayers Jun 13, 2008

    you test em all with your voltometer till one doesnt get the proper signal. to learn that you need to google how to test capacitors and diodes still mounted on pcb boards. if you want to fix it call toshiba and give the the model number and the pcb board sid# and see if you can buy it for 60 bucks. which will probably be the cost. if your lucky but usually you only have 6months- 1 year after it was made to get the components. not like it was in the trinitron era. now tvs are basically throw aways. and after the warranty period for that model they usually dont keep the pcb boards to sell.


    if its not working and you say the board gets power. then the main pcb is blown. and thats all there is that can be broke. to start finding what capacitor or surface diode is bad start at the number 01 on the board and work till you reach the end. usually a board starts at the power source and continues through out. so start at the power to the board and keep testing everything till you get a double beep outta your voltometer. if you have a nice digital one that is.

  • Nathan Ayers
    Nathan Ayers Jun 13, 2008

    i wish i could tell you what one is exactly blown but there is no way to know. ive read through business tech reports of the power ic being blown check that and see and that could be your problem which google shows me there 37.98 to buy.

  • Nathan Ayers
    Nathan Ayers Jun 13, 2008


    as far as identifying pcb and ic boards there always stamped with a identification number. that is what you would google.



    i recommend a http://www.weisd.com/store2/VELDVM850BL....">


    http://www.weisd.com/store2/VELDVM850BL....">VELLEMAN or a http://www.testmart.com/search/compare.c...">


    http://www.testmart.com/search/compare.c...">Instek

  • Nathan Ayers
    Nathan Ayers Jun 13, 2008

    not necessarily the ones i linked cause youd want a better one thats one or two models up but they are good names.

  • Nathan Ayers
    Nathan Ayers Jun 13, 2008

    im sorry when i said voltmeter i meant you need a multimeter

  • Nathan Ayers
    Nathan Ayers Jun 13, 2008

    theres a couple different ways to actually test them and its different for diode and capicator google it and they will give you exact steps on how to do it. better then i can explain

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