Got a cube u30gt from MP4Nation in this deal a few months back
https://www.ozbargain.com.au/node/84930
It got really hot yesterday when plugged into the charger, could nearly not pick it up. Had a very strong electrical burning smell with it.
The heat came from the area around the power plug input. The power plug was really hot as well.
Pulled the plug out. The charger seems fine, have left it on and no heat issues with it. Have not yet tested it's voltage output on multimeter.
If this was left unattended there would have been in my opinion a high chance of the unit or it's surrounds catching on fire.
Tried contacting mp4nation with their online form, but their stupid 'My Support Tickets' page seems to be showing me EVERY other support ticket they have received. All 1000+ of them, complete with email addresses and names. DOH!
You watch, the warranty will be 30 days and they won't want to fix it etc.
TL;DR Cube u30gt nearly caught on fire, mp4nation.net helpdesk is stuffed as well.
Go to their website - and you should be greeted with the live chat.