Hub 5 on its way out

I started a discussion about my Hub5 giving me trouble around 4 months back.

I had an engineer come to my house who was very helpful and understanding of the issue. He said the power supply felt a little loose in the slot of the hub so gave me a new power supply and off he went. It was fine for a week and it started happening again. My hub basically turns itself off completely unresponsive and if I as much as pick up the hub the power light fires back up basically telling me that there's a dodgy connection somewhere. I have also experienced a loss of connection followed by a loud high pitched squeal from the hub then the lights shut off. It's clear to me this hub needs replacing if I can please have another engineer come out and replace it.