Kamvas 22, suddenly can't power on, adaptor has no light (Help?)

Hi guys, I wonder if anyone has encountered the same problem.

I have a Kamvas 22 that suddenly died. I have 3 displays, a Kamvas 22, a Kamvas 13 and a monitor.

One morning, I just noticed that my Kamvas 22 isn't powering on. I noticed that the adaptor has no light. I wonder if the problem is from the tablet itself or the adaptor died. Sadly, I don't have a spare adaptor, Is this adaptor available for purchase somewhere?

Any troubleshooting tips would be appreciated!