Spacewagon 98 2.0 Glxi starts for few minuites then stop

I owned a spacewagon 98 chariot (japan). It will sart for a few minutes then stop. I already sent the computer box for repair, it managed run for about 2 years without problem. Recently the same problem comes again, I brought a second hand computer box but unfortunately it did not solve the problem.
Is there any other parts that I need to check and probably replace?

thank you.