This overheating problem is probably unrelated to the original post and deserves a new thread.
Right now all we know is that your 'eBay' devices are not operating properly. We have no way of knowing if you are doing something wrong or if the devices are just defective. If you provide us with a link to the eBay source we can:
(1) Possibly come up with some information to help you make your devices function properly.
or
(2) Not order from that source and avoid similar problems ourselves.
Don