C4 motherboard problem
27/12/2019
Q：I have a SD Connect C4，but it suddenly stop working. It can't read any information out of the car except voltage. Here is the picture of the self test . What's wrong with it?
A： Powersupply：8 error，you have hardware error, hence no connection to vehicle. You must replace its relay board, please click the link below to buy a new one.