Our factory tell us that there have some chip problems about CK-100 buying at the end of October. Some of the machine may lock up. if you have this confusion, please let us know, we will send you a board like this for free. you only need to change it.
For further orders of CK-100, we will send this board to you with CK-100 main unit in case you meet this problem.
we are always at your service.