Hi can someone shed some light on the above ? swapped out a single gang wall socket ( working perfect ) for single gang with usb, simple job wire up like for like. however the flick switch on the new usb socket which was working perfect for two days does now not cut the power and the socket is live all the while even when the flick switch is in the off position. I thought it was a faulty switch so took it back and got a replacement but the same has happened again....works fine for a couple of days then the flick switch part wont cut the power.....thanks in adavance