Hi Keith, thanks for your reply.
We're not a reseller, but supply a service which effectively provides a mobile WiFi network. As such the problem is most likely due to wear and tear carting the equipment around.
As such, is this something that would be covered by the warranty? I just assumed it wouldn't be as it's not strictly a fault.
Furthermore, the units aren't that old and I certainly would prefer to avoid voiding the warranty.
Thanks,
Mark.