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Repairing power supply of Ogawa Reflexology

batman

Jan 6, 2014
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Jan 6, 2014
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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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jcurrie

Feb 22, 2011
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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
 

davenn

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


Dave
 

Arouse1973

Adam
Dec 18, 2013
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It should be short circuit. it's a 250mA PTC fuse.
Thanks
Adam
 

KrisBlueNZ

Sadly passed away in 2015
Nov 28, 2011
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I agree with Adam. It looks like a Polyswitch resettable (PTC) fuse.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Jan 21, 2010
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It should be short circuit. it's a 250mA PTC fuse.

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?
 

Arouse1973

Adam
Dec 18, 2013
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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?

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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