500 gb just stopped working lights flash with three blips and a pause and then repeats try's to spin up but won't tried different power supplys etc.

Try a drive dock on the Removed Hard drive. The usual problem is the enclosure.

The power-supply seems OK, since you can hear it spinning, and the lamps are lit.

So, either the USB-to-disk-drive interface has failed, or the disk-drive itself has failed.

Open the enclosure, and remove the disk-drive, and connect it as a "slave" disk-drive in some desktop computer, to see if it works, when you bypass that 'USB' interface.

what os do you have

Hello,
this drive rarely has a power switch issue beside the fact that sometimes it gets misaligned and cannot be properly put in the ON position because of the aluminum casing. If you tried powering on while the backplate is removed and still nothing, look at the soldering of the power switch. If the switch connectors are still all in place, the problem lies more with the power module.
A total lack of power would usually result from the power module being "cooked", so look at traces of burned and cracked chips near the power supply connector on the interface board. If all seems good, make sure the power connector is also correctly soldered.
If the power module is burned, you can replace the interface by buying a used one, but in most cases it is easier and cheaper to buy another enclosure like you did.
Regards,

May be your Personal Storage 3200 500 GB Hard Drive power socket pins are not seated well when you connect so make sure the pins are in good condition.
Think this is helpful !

plz check the drive spin up when u connect to power
dont use front panel usb plz use back panel USB

Hi there
You can try not really know but it like your waste ink needs to be reset.

Start with the printer OFF

1. Hold down RESUME and then hold down POWER
2. Release RESUME
3. Press RESUME twice, then release POWER
4. Wait until print head stops moving
5. Press RESUME four times (if four doesn't work try three times)
6. Press POWER once
7. Press RESUME four times (if four doesn't work try three times)
8. Press POWER once

Repeating the RESUME/POWER code twice made the difference, the fixes I found wouldn't work because they stopped at step 6.

This situation indicates a problem with the built-in self tests. Most likely a power supply failure. I don't believe it is economically feasible to replace the power supply. If it is still under warranty, I'd go through the procedure to get it repaired/replaced. Otherwise, you'll need to replace the unit.

power supply board going bad

try pushing the door closed again, i have a problem with my machine that when i put a load on it starts then stops the light starts flashing then i firmly push the door (at the handle side) and it starts to work again, it might help!