Nintendo switch wont turn on or show as charging after 6.0 update

Hi all,

I have a switch that doesn't turn on, I have tried holding the power button, maintenance mode, etc and no luck.

When plugged into my PC, my PC is recognising the switch turning on and off as every time I do turn it on and off I am hearing the device connect/disconnect.

When the switch is put into the dock, the dock shows a single green flash and then nothing else.

Any ideas?