[Coco] MicroSD Drive Pak Failure

[Guillaume Major]

Hi guys,

I accidently dropped my MicroSD Drive Pak on the floor and it's not working 
anymore. When I turn on the coco, it displays the Disk Basic copyright, the 
Coconet version and hangs on the MicroSD Pak detection. I opened the 
cartridge and saw no apparent damage. I tried reseating the socketed chips 
to no avail. I suspect the uDrive module to be the problem. The power on led 
doesn't go on when I turn on the coco.

If I connect the GND and VCC pins to power up the uDrive module with an 
external 5 V DC source while the cartridge is unplugged, is the power on led 
supposed to go on?

Is there any other component in the drivepak that is sensitive to shocks? 
Eprom? Oscillator?

Thanks,
Guillaume