@Spawn153 Sorry you're having problems with your Duet. Unfortunately, as @bearer says, it sounds like quite a number of components have failed, and it's most likely uneconomical to repair. We don't really do repairs in-house, either; they go back to the manufacturers if it's their problem, or @dc42 undertakes some repairs when he has availability (but is very, very busy at the moment!). If you can find someone else in the UK to repair it through the 'community repairs' thread, that's probably your best option if you really, really want to repair it. We prefer boards are repaired where possible, as we dislike e-waste, but sometimes it just doesn't make sense.
However, if you email Roland on sales@duet3d.com we have a small number of refurbished boards at reduced price, which will keep the cost of replacement down.
Ian