Yay I am so happy I have finally fixed my Nova pat tester it failed with the error message of ( Internal Relay Fault ) well after some head scratching andFault finding it was discovered that the stupid NiCd battery had died and spat its guts out eating through several pcb tracks and ate a leg of IC14 so fixed the pcd then replaced the IC and it was still not booting properly as the Intel Microcontroller wasn't getting the reset signal well finally fixed all of it after replacing a Tantalum capacitor and hey presto it is back up and running just got to get it calibrated now.