Sega-Naomi

Hi,



I have problem with Sega Rally Championship Twin Arcade, game starts and works perfectly, but sometimes, very often, player on left side simply freezes, mostly due game start (first level), Desert route..

Left cabin operate with non-original power-supply, the electrician put one of the PC PSU, but it works perfectly, about one year...



Can this be overheating or bad PSU, or maybe something else?





Sorry if my English was bad.

Best regards, Milos.

Sounds like it could be a voltage problem especially as your using a PC PSU as I doubt they have enough power to run the machine properly.



Get an original PSU in there, i think you can pick them up for ?10 - ?15 these days.

I'm from Serbia, here it's a little bit complicated to find an original CPU.

I remember that the electrician look for PC PSU with 40A or more on 5V pins, something like that, and that PSU worked perfectly, about one year, now i dont know whats happening...



I will try to find better CPU, can this be overheating, bad contacts or dust inside cabin ?

Does anyone have other ideas, i would be very grateful ?

it sounds interesting,

it could be a lot of things though.

try swapping the psu between sides first.

if that does not change anything - swap gameboards.



i cant see any problem using a GOOD pc psu,

but be warned - most pc psu's have rubish brand capacitors in them that only last 2-3 years.

even expensive brand psu's use junk!



infact open the psu and see if the caps look o.k. - not bulged or leaking.

Hi, I had the same problem with Sega Rally twin. It is usually caused by low or bad +5V. Use some kind of higher quality PC power supply like Fortron for around 25EUR. Forget about cheap PSUs for few euros.