This seems like a pretty common fault. My PC also doesn't pick it up at all when I plug in the USB. I've had the thing for years and it's just been sitting in it's box wrapped in the original foam so it shouldn't be damaged.
I originally bought it in the UK and I'm now living in the US. One thing I'm not sure of is can I use the original power supply with a standard UK to US plug adaptor? The original AC adaptor says input 230V and output 9V. I'm no expert but I think the UK's power outlets are about double the voltage. I'm not clear on whether US power (120V) would still be converted to the same voltage required by the Pod or if I need a new adaptor all together?
Any insight would be appreciated!