![]() ![]() If more than the TVS is damaged or the above fail then you will need to replace the circuit board with an exact match, this involves matching muchmore than just make and model number, so we'll cross that bridge if we need to. Capacity starts at 2TB and goes up from there. It's made for Mac and is Time Machine ready. If uou can't identify any damage to the TVS's or other components then mount the drive internally in a desktop and see if it will power. Western Digital makes some of the best hard drives around, and this well-priced USB-A and USB-C compatible model fits right in with all its other excellent drives. Copy your data to another disk as quickly as possible, and then replace the damaged disk. The sensitive components of the drive are now running with no overvoltage protection, and another jolt, even a transient spike from the power supply could be enough to trash more of the drives components. Once this is done the drive should now spin up HOWEVER you need to understand this is a temporary fix, designed to allow you to get your data off the drive. The next step is to unsolder one side of any blown TVS diodes fromt he board and bend it slightly up so it is not making contact with the board. OK so let's assume at this point that you have identified one or both of the TVS diodes as blown, and everything on the board looks good. Look for scorching, burn pinholes and any other sign of physical damage. Next thing to do after looking at these chips is to carefully inspect the other chips on the board. If the device shows a short in both diretions then it is blown. Buy WD My Passport for Mac WDBP6A0040BBK - Hard drive - encrypted - 4 TB - external (portable) - USB 3.0 - 256-bit AES at. They should show short in one driection and open in the other. If they are not obviously damaged, then you will need to check them with a VOM. ( small rectangular chips with two connections to the motherboard ) Look closely at those devices and see if either is obviously cooked ( cracked, deformed maybe some scorching ) These are the transient voltage supressors diodes designed to protect the mor delicate components from exactly what happened - overvoltage. After the disk is out of the enclosure, on the circuit board of the drive near the power connector you will see a couple of diodes. ![]() Two possibilities, you either cooked the power supply in the enclosure, or cooked the mother board of the drive. OK first thing to do is get the actual hard disk out of the enclosure. ![]()
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