Star Wars Trilogy power supply

[Kilby]

I am currently working on the sitdown Star Wars Trilogy arcade, which boots up and can be played for a few minutes until the power supply shuts down. After unhooking the power supply it will work again for a few minutes then shuts down again. I have had the power supply tested by an electronics shop and they say it is good. I have also hooked the game up to a different monitor(still projection) and the power supply still shuts down. What would be causeing the power supply to shut off? any direction in this matter would be awesome. thanks

[Kilby]

After further troubleshooting i believe the problem is with one of the componets down the line, and thats whats causing the powersupply to shut off. Any ideas as to the culpret and Is this a commen problem with sega games?