need some help, ive got a maygay cash is king machine, when i switch it on it doesn,t boot up all power LEDS on the MPU are ON except the +12V LED which flashs every couple of seconds. Ive reseated the ROMS in the program card...no good. The PSU is OK i reckon, all fuses are OK and i can "false feed" Relay in the PSU so i get a steady +12v (LED stays on) at the mpu, when i do this though the other LEDs seem to fade on and off every few secs