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Troubleshooting
Q
I plugged in the power and turned on the module, but
the LED screen has not lit up and there is no sound.
A
Please check if there is electricity in the power outlet,
and that the plug is inserted well. Also, check to see if
the power jack is contacting well, or if the positive and
negative poles may have been reversed.
Q
Why is the LED light on, but I can’t hear anything
through the speaker?
A
Please check to see if the main volume is adjusted too
low to hear any sound.