The device looks fantastic. But the battery contacts were missing from one side. OK, I've solved it with a piece of wire. But after 25 attempts, it still displays only error after warmup and blowing in...

The device looks fantastic. But the battery contacts were missing from one side. OK, I've solved it with a piece of wire. But after 25 attempts, it still displays only error after warmup and blowing in...

The device looks fantastic. But the battery contacts were missing from one side. OK, I've solved it with a piece of wire. But after 25 attempts, it still displays only error after warmup and blowing in...