Barley box dm 100 1 Black screen after boot

According to the online inquiry of Zhongguancun, the reasons and solutions of the blank screen of barley box dm 100 1 after starting are as follows:

1. The TV is switched to another signal source, which is inconsistent with the video signal output by the set-top box. Solution: Press the "signal source" key of the TV remote control to switch to the video source consistent with the set-top box.

2. The set-top box is not turned on, resulting in no image and sound output on the TV. Solution: Just turn on the set-top box.

3. The video circuit of the set-top box is abnormal, resulting in no image output. Solution: Check the video output circuit of the set-top box for maintenance.

4. The video cable connected between the set-top box and the TV is not connected correctly. Solution: Reconnect the set-top box with the video cable of the TV.