Have a Hitachi HTS541612J9SA00 120 GB SATA Hard Drive The laptop got wet and fried but the drive was dry. It does not spin up however when connected to another computer or power supply. Is there a way I can tell if it is the motor or the logic board - say with a multimeter or such. If it is the board where can i get one and swap it over? if it is the motor can it be swaped over? Thanks

I guess the easiest way to tell you this is straight forward. Either try blow drying out the laptop if you did not power it up after it was in the water or try to test it while it was wet. Blow it out really good. Let it dry completely if this is the case piece by piece being careful not to melt parts and misplace part etc. Most laptop or cell phones etc can be salvaged if they are allowed to dry and the batteries are removed so no contact is there. They will work again!
The hard drive by the time you get ready to fix this drive motor or whatever else it may need plus shipping and handling for the parts for it you could just buy another one they are not that expensive these days. You may end up having to take the loss of the lap top of course you can try EBay they have a variety of vendors that have mother boards as well at reasonable costs the hitch with this is that you have to be computer tech minded in order to replace a board some what if you are good at remembering where things were taken from and where they go back properly grounded etc. It would be a much cheaper fix than buying a new lap top this is for sure.
You can test the drive to see if it is good or not. If you have a computer that has a SATA slot on its board you can plug it in and give it a test to see if the hard drive will fire up and become visible in the My Computer left click and see if it shows up if that is the case you have a good hard drive. Thanks for using FixYa! I would personally if it were mine blow dry it out and give it time to completely dry. John