When you Repair and replace the HDMI connector,use for Checking the status of HDMI cables
Mapping continuity and proper configuration.
When testing each line, the corresponding indicator light will be light
How to work? The HDMI has 19 + 1 pins, corresponding to 19 + 1 lights on the test board. When the probe contacts the HDMI cable core, the corresponding indicator light will be on. Record the color and number of the light