WD 1tb not spinning

[SSStang]

Newbie here.
So my imac wouldt turn on. I pressed power button a few times and heard a pop and then smelt burnt smell. Unplugged it and let it sit.
Now im trying to recover data. I removed hard drive and got a SATA cable. When I plug it in the light flashes on then off and that is it nothing. I cant hear anything.

The model number is WD1001fals-403AA0

Not sure what to do from here?
I have seen that i might be able to replae the board on the HD but not sure?

Thanks

[Cleanroom]

If you hear absolutely nothing than it is possible that the board may be fried. Can you take a picture of the component side of the PCB. You will need a Torx T8 to take off the board.

Unfortunately you cannot just swap the board from another like drive and have it work. ( unless you get very lucky it is the same rom version). If it is a bad board you would need to swap the rom information over to a donor board.

But it is possible that this PCB has a TVS that has fried and it could be an easy fix to get the drive up to recover your data, but not for continued use.

[data-medics]

There's a chance that the issue is just a blown TVS diode on the drive. That model typically has PCB number 2060-774640 which has TVS diodes on both the 5V and 12V rails.

Get yourself a multimeter and check for resistance across these two components. If either one reads dead short measured in both directions, it can simply be removed.

Just be sure you're running on a clean power supply, preferably plugged into a UPS battery, since removing that will expose other components to power surge damage.

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[Cleanroom]

Thanks DM, I could not find one handy to take a picture and show. Usually the one I see damaged the most is the one on the far right at the edge of the PCB

[SSStang]

Ok here is a picture. Also I tested resistance and it works oneway but not the other is that correct? Or am I doing something wrong?

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[fzabkar]

@SSStang, are you saying that both diodes test the same way?

Can you give proper resistance readings for the diodes and zero-ohm resistors?

http://www.hddoracle.com/download/file.php?id=5420&mode=view

You can read the instructions in my FAQ:
http://www.users.on.net/~fzabkar/HDD/TVS_diode_FAQ.html

[SSStang]

So I guess I was doing something wrong. Read instructions and I get resistance on both diodes.

Not sure where to go from here.

Thanks for the help

[fzabkar]

Power Up In Standby (PUIS)?

[rogfanther]

Just to avoid misunderstandings, can you post the measures you read from both diodes ?

[colanco]

Power Up In Standby (PUIS)?

I don't think so, the op says

.....and then smelt burnt smell.

you should check again the measurements of the TVS or change pcb + ROM