Sega-Naomi

I am trying to find a replacement/alternative for the two small fans on my Naomi 2 motherboard. They are worn out.



The ones that are currently installed are from SEPA, model HFB44B05A.. I cannot find these anywhere.. I did notice that some motherboards use other fans (SAN ACE MC fans from SANYO DENKI??). If someone can provide me with the model number for those, that would be great.



Anyone got any experience replacing these fans? Possibly using alternative brands (papst/sharkoon/etc)?

http://kirurg.org/arcade/?page=naomi-tech



looking for this aswell. You would need a 5v 3-wire fan, if the naomi doesn't get the speed reading, it shuts down, so a 2-wire wouldn't work.

Nice photo.. Yesterday, I spent an hour zooming in on vague photos of Naomi motherboards.. no need to zoom here



This is the official page for the SEPA fan (the one that my Naomi2 has):



http://www.sepa-europe.com/hfb44bxxa.en.html



The problem with finding replacement will be the tachometer signal, IMO.. there are plenty of 5v (40 mm) fans available, but only a few have the third wire.. but there are different standards for this third-wire-signal..



I am afraid I might damage my precious Naomi if I mount a fan with incorrect specs..

Old thread so I'm sorry...but, folks might find this information useful on what fans they can use;

http://wiki.arcadeotaku.com/w/Replacing ... an#Naomi_2

I read that CPS2 boards use the same fan size as NAOMI,



http://www.neo-geo.com/forums/showthrea ... fan-change

skate323k137 wrote:I read that CPS2 boards use the same fan size as NAOMI,



http://www.neo-geo.com/forums/showthrea ... fan-change

That would only be the case fan which is similar, the Naomi main boards also have a CPU/CPU fan or in the case of the Naomi2 they have 2.