I'm just glad it was with a pretty cheap device and I have a bunch of replacements, I will probably open it up and have a look, may be something that can be fixed with a bit of jiggling.I suppose you're at risk of entering a sunken cost fallacy. Yeah, it's a tough one.

My main learning is not to use AliExpress for anything of any value, if I'd dropped 200 to 300 quid on a higher end device if be very annoyed, I kinda assumed it would be like Amazon, which is my mistake.

and decided an AYN Thor probably wouldn't be the smartest choice for my first retro handheld, even though it does look cool as hell. Had my heart set on a clamshell design and was hunting the web for a few days looking at my options and managed to snag myself a Retroid pocket flip 2/SanDisk extreme pro 1TB (bit overkill for wat I need) for £140 all in brand new. If I take to it well I'll look into a AYN in the future just in case it turns out to be one of them purchases where it looks a good idea and then not used.