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Kundi

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Hi guys!

I got a defective Sega 838-13683-93 IO board some time ago, to which the Jamma connector was probably plugged in the wrong way round.
Some components are apparently burnt out: They are labelled EMF1 and EMF4.
Does anyone know what these components are and where I can get a suitable replacement?



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I am assuming they are electromagnetic filter caps, but I'll let someone else chime in here officially. I wouldn't know what capacitance they would be anyway.
 
I am assuming they are electromagnetic filter caps, but I'll let someone else chime in here officially. I wouldn't know what capacitance they would be anyway.
Wow, I think you've pointed me in the right direction :)

I measured the component next to it: 250 nF

As it looks, there are currently none available with the value...
But I think I will try the 330s:
https://www2.mouser.com/ProductDetail/605-101X41W334MV4E

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Thank you very much!!
 
I had a similar problem and i just bridged the pads. Works again just like before (but it's probably good to have them if you care)
 
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