I recently bought a Seagate 1TB BackUp Plus External HD. I dropped it about 6" to the ground and it stopped working. Disk Manager does not recognize the drive when connected, neither does the disk spin. When I connect the hard drive I can hear a sound similar to an alarm (definitely not clicking) but fast beeping about 3 beeps per second and it stops after approx. 5-6 seconds. It seems to be coming from the center of the HDD around where the spindle is located, where the round warranty sticker is but it does not sound like it is a mechanical issue. Seagate sent me a healthy HD of the same model. I swapped the PCB boards but when I do neither of them work, nor get recognized by the computer, nor make any sounds. Any ideas/suggestions as to the reason/component that is failing. Can I swap the failing part from my current healthy drive? I had someone say that the motor might be stuck. Thanks a million in advance. I attached high quality pictures both drives and PCB boards.
Problem Drive:
S/N: S2ZPJ9CD372253
Model: ST1000LM024
HDD P/N: HN-M101MBB/AV1
REV. A
F/W: 2AR20002
DOM: 03/2013
Site: DGT
PCB:
WC REV 6
20130223
U3B 2J2K
Healthy Drive:
S/N: S2ZPJ9BD510762
Model: ST1000LM024
HDD P/N: HN-M101MBB/AV1
REV. A
F/W: 2AR20003
DOM: 05/2013
Site: DGT
PCB:
WC REV 6
20130407
M7A 4508
Al
P.S. I have high quality pictures of the PCB boards etc. Any way I can post them here?

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