Hello!

I found this on a Salvation Arme shop. The motor is still running but the old belt have melt away. 

stretched length/half length :11.6-11.8 cm for PX410, PX1000, PX910, TP-S101, HS PX101 stretched length approx 13.5.

I'd assume either of these sizes would work? Let's see what the Aiwa Gurus say

Thank You doc!

If you can't get it working and want to pass it on, please let me know as I am looking to buy a Mk1 one of these. Otherwise, good luck with the repair!

Paul