If your Brother mfc-9130cw printer doesn't respond and continues to go offline, there could be several reasons for this, particularly the connectivity to Wi-Fi as well as problems with the power supply. The Brother printer will tell you that it's offline if it is unable to communicate with the computer. We understand that it can be frustrating when you are doing something for a long time and after you have given an instruction to print your computer will display the error Brother printer always offline