PCB Seagate

1. Barracuda 320gb 7200.12 pcb – Can you tell me where I can get a pcb for my Seagate hard drive – specs barracuda 7200.12 320gb s/n: [ Edited to comply with forum guidelines ] st3320418as p/n:9sl14c-301 firmware cc35 date code:10025 site code: tk

2. Seagate 500GB, PCB – I got this Seagate 500GB which is broken, mostlikly the PCB connector. Now i was wondering; im willing to buy a PCB board but i cant find my exact PCB number. which looks exactly like mine, but the numbers dont match? This one has the numbers:  Board number on label: 100537087 M << match but the Board number on PCB: 10056530B REV A doesnt match or atleast im not iwen sure where they got this number from. All im seeing on my PCB is the numbers giwen above. Can you please help and let me know if this PCB is good to use or not? Again i matched the picture with my PCB and they match exactly!

3. Repair pcb? – I wanted to know if there is a possibility to repait my pcb self. I have a Seagte Barracuda 7200.12 ST31000528AS. PCB: 100536501 REV A B5502C30
Here is a pic where the pcb is broken(burnt).

Hard Drive PCB Seagate on HDDZone.com