fzabkar wrote:
In a great many cases the damage is confined to a shorted diode, which can simply be removed. That's a simple DIY job which will cost nothing. In the absence of any detailed information from the OP, it is completely inappropriate to jump to the worst case diagnosis, namely that the preamp is dead.
Sofar i have not had 1 single drive this year with a damaged TVS, on the other hand I just recovered a WD5000BEVT this week, where the client used the incorrect power source and it damaged, several caps, motor controller and preamp. (granted I don't see that many of them, but then again I don't se many TVS issues either. If this is the case, then yes the OP will be lucky and it will be a quick fix.
fzabkar wrote:
There is no need for the OP to panic just yet..
Yes, there is no need to panic, panic is never a recommendable emotion, however McGyver time can often cause much damage, so therefore it's not always recommendable. IMO, the try "A" and see if it works, then try "B" and see if it works and then try "C" and if all else fails send it to a pro, is not a good approch. At least not if the data is important. In some cases a damaged preamp can kill some servo info, and there are other nice and fun things that can occur and render the drive useless, but ofcourse your average PC Tech is not going to know this.
fzabkar wrote:
If the OP needs more detailed help, then I invite him/her to upload a photo of the component side of the board.
Good idea
