Can I swap circuitboards

I have a problem with a WD25EZRS 2.5TB. It will not spin up, However, when I swapped the circuitboard from a similar model it says that the disk needs to be formatted but the disk does spin up.

My question is, If I find another HD with the identical circuitboard, will this fix my problem?

Maybe this will help  http://community.wd.com/t5/Off-Topic-Discussions/Bridge-Boards/td-p/353839 check the other posts by fzabkar he is ablut the only one who understands these boards. You can try sending him a PM.

Joe