psx controllers not working - 7502 series motherboard diagram /pic required please

[spooky]

All the on board fuses are located together in a small cluster, they are small black cubes about 4-5mm across and on older models located very close to either the power supply connection or the laser connection.

Take a look at www.paulmax.eng.net for a pic of the fuses for a PU-8 motherboard, I know its not the right one but it should be enough to get it sussed.

Sorry its not in time for X-mas