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Repairing power supply of Ogawa Reflexology

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Discussion in 'Troubleshooting and Repair' started by batman, Jan 6, 2014.

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  1. Jan 6, 2014 #1
    batman

    batman

    1
    0
    Jan 6, 2014
    Hi all,

    I am in the midst of checking the components on the power board and noticed that when I run through a check on this component, it seems to be shorted.

    I've taken this component to my local electronics store to find a replacement, but they themselves are unsure what this component is. To me, it looks like a capacitor, but the markings on the component does not point it to being a capacitor, or am I wrong?

    Hence, what is this component and where can I buy a replacement online? Tx
     

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  2. Jan 6, 2014 #2
    jcurrie

    jcurrie

    128
    1
    Feb 22, 2011
    is there any hint on the board as to what the component might be ? did you try a online search? it also might be a proprietary component .

    jc
     
  3. Jan 6, 2014 #3
    davenn

    davenn Moderator

    13,785
    1,936
    Sep 5, 2009
    with markings like that, it may be a varistor ( MOV) for over voltage protection


    Dave
     
  4. Jan 6, 2014 #4
    Arouse1973

    Arouse1973 Adam

    5,165
    1,087
    Dec 18, 2013
    It should be short circuit. it's a 250mA PTC fuse.
    Thanks
    Adam
     
  5. Jan 7, 2014 #5
    KrisBlueNZ

    KrisBlueNZ Sadly passed away in 2015

    8,393
    1,271
    Nov 28, 2011
    I agree with Adam. It looks like a Polyswitch resettable (PTC) fuse.
     
  6. Jan 7, 2014 #6
    (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

    25,480
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    Jan 21, 2010
    I was thinking PTC, but I suspect that a 250mA PTC would have an easily measurable resistance. I'm also not familiar with the failure mode of these devices. Open or short?
     
  7. Jan 7, 2014 #7
    Arouse1973

    Arouse1973 Adam

    5,165
    1,087
    Dec 18, 2013
    Good point Steve

    1.3R to 3.8R but if he was measuring on continuity setting then the meter would probably buzz down as that low a value. Which maybe why he said shorted?
    Thanks
    Adam
     
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