Wich cautions does i need to keep,, to the live from my pc3000 board, i have read in pc3000 manual, wich says

....Switch on the power. If a PC3K PWR power supply adapter is present, the power supply is switched on
automatically at utility start. Power may be switched on without turning the PC off first. Damage to the PC-3000 PRO
controller in that mode is unlikely; however its output cascades may be damaged in cases when a burnt-out electronic

so which are you experience with pc3000 board, really maybe damaged connecting a pcb with burn out electronica & how can i detect a burnt out in PCB Thanks

Hi Alberto,
Please read what you wrote,
Ok, You can detect PCB problems using an power supply stand alone and turn on the hard disk with it. If the hard disk is with any kind of problem you will be able to detect at the moemnt that you turn it on.
Never put a hard disk at the PC3000 at the first moment. this is what the manual want that you understand.