I had plugged my hard disk to 4 pin to SATA power cable but later i come to know that cable was burnt. My PCB was also looking warmer from normal. I tried to check if it is still working and for that connected my hard disk to my laptop but it did not detect it. When i connected it to my computer it was not taking the power. I thought that my PCB may have burnt but it doesn’t look like it is burnt. Can i put new PCB with same model number in my hard disk? Do in need to check for any other detail like firmware version etc?