I took out the PCB of one of my hard drive which is not getting detected just to check whether there's any burned caps or chip and I found some corrosion/rust on the contact pads which makes the contacts with hard drive. I have uploaded the picture for the reference. How can I clean the corrosion/rust from the pads shown in red marked area? A little help would be great. Thanks.
Thanks for replying. I cleaned with eraser as well as with a isopropyl alcohol but the contact points are still dark in color like they are permanently corroded/rusted. Should I add soldering on them? Will it improve the contacts?