Hard Drive Physical Repair

Hello,
What I am looking for is an advice on how to learn to repair hard disks (new models mostly) when there is no “software” solutions left. Is there a way to fix click of death? When to replace the circuit board? when to replace the magnetic head? Best way to make a diagnose on what is physicaly wrong with the drive? Im mostly interested in stuff like that. I would be really grateful if someone could give me some usefull advices, or direct me to a guide, tutorial, ebook or anything that can help me learn the basics of diagnosing and repairing a hard drive physical problems. Also if you can direct me to some advanced software hdd repairing guides, that would be awesome as well.
The main reason I would like to learn to repair hard drives is that people here give for free or sell for a small fee(1-3euros) non working hard drives that havent even been properly diagnosed, it doesn’t work and they just decide to get rid of it, and I can always use an extra hard drive if I can fix it. As the fault of the disks they mostly say “the disk is clicking”, “the bios recognises it but windows won’t”, “hard disk just stopped working”. So I would like to learn how to repair those stuff, if possible! I come from Serbia and here new hard disks of 1TB sata II 7200rpm go from 80 to 150 euros, the 500GB ones go for 50-80 euros, and average salary here is like 180 euros so you can see how much money I can save by just repairing couple of “broken” hard drives instead of buying new ones.
I am really sorry for boring you with my life story and making the text so long, I just wanted to give you a full brief on the situation but I would really be grateful for some directions and advices!
Thanks!
Answer #1
http://lmgtfy.com/?q=how+to+repair+a+broken+hard+drive
Answer #2
check it
http://www.wikihow.com/Fix-a-Physically-Broken-Hard-Drive
Answer #3
You’d probably make more money selling the pcb’s off the drives if they have the “click of death” – why do you think there are so many “faulty” drives for sale on E-bay and hddguru
You would probably not be able to afford to setup a “clean room” and have the equipment necessary to repair them.
Answer #4
thanks a lot for the info guys!