feedback-nine-answer

The troubleshooting steps for the problem of no sound from the device include:

Check that the speaker wire terminals and corresponding PCBA sockets are not snapped into place or that there is false soldering.

Follow-up processing steps include:

QC conducts a knockdown inspection to confirm whether the sound and other functions are INT (i.e., whether the function is normal).

If the components are found to be defective, timely feedback to the purchasing department, which will contact the supplier to analyze and deal with the problem.