hussam wroteI have no idea. It would be great if that was possible. If it is, that is one solution.
rolf would likely know better though.
I once had a problem with a burned disk, and someone replaced the PCB and retrieved the data. But that was like 10 years ago.
Last week my external drive died. I read that it's hard to replace the PCB because now it contains necessary data that is unique to every disk, so it has to be reprogrammed (copied from the old PCB). Not sure about the specifics.
Anything to do with opening the disk has to be done in a special dust-free lab environment.
In his case it seem that the hardware is still working, I think there is hope without doing any of this, just special software. One sign to be careful about is the sound the drive makes. Damaged hardware will usually make weird sounds, or maybe just faint clicks. Put your ear on the drive when you turn it on and listen.
There is also one trick, to put the disk in the freezer, or also to gently hit it on the side. It can help with some types of mechanical failures. Please research more before doing any of this as you risk damaging it, and use as last option.
But usually recovering data from a disk is a drab thing, better get used to the idea that your data is maybe lost. If you really care about it, then you can try all these options, in the right order (so as not to damage the disk even more).
All this has been said before (much of it by myself) in the 20+ or so threads on that particular topic on Lebgeeks. And probably ad nauseatum on the internet. I swear every 2 weeks or so someone pops up here with that exact question! That's why I react like this.
Anyway I hope he will recover his data.