Anybody on here experienced in Xbox One faults/repairs?
I have a First Edition console that I bought on day one of the launch. It is not a "Day One" but it is the first version. It is shutting itself down after a minute of being on, it makes the shut down noise etc. I don't believe it is overheating as the console itself is fairly cool. The power brick has some dust in it and I have blown that out with "air in a can", the little cooling fan in the power brick is working but I am not sure what to do.
I have access to another brick if needed to trial that but just wondering if anyone has a thought or has gone through the same experience with their console.

Really would like to chuck it in the ocean and upgrade to an X but not sure what the trade in prices are like at EB etc. I could just trade it in as a working console, but I wouldn't sell privately.
Any thoughts would be greatly appreciated.