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Possible causes of failure analysis:
① signal abnormalities;
② main chip power supply abnormalities
Suggestions:
① confirm whether the module is burned board, if the test to confirm the burned board, it is necessary to replace all the main chip and driver chip.
②Failure is not ruled out after replacement. Test whether the signal is short-circuited, if short-circuited, eliminate the short circuit.
③If still can not solve this problem, please contact sales or technical personnel