I have 2 bad USB hubs.  Both of them have lost the regulator for port 6 & 7.  I attempted to repair 1 buy replacing the regulator but it is very unstable above 425mhz.  The second I have done nothing to try an fix it.  I have reached out to sidehack but he will not reply to my emails. 

Be careful running these hubs with 5 CompacF's in them, both hubs that I have used this way result in the same failure.  The regulator seems to overheat and burn out.  At the moment support seems to be nonexistent.  Hell, I am not asking for them to be replaced, I asking if they can be repaired and what would that repair cost be.  I think the USB regulators need a heat sink on them to help dissipate the heat.