In life, for car audio, we often encounter some small problems. After encountering the computer audio, I don't know how to solve it. Today, the editor will teach you some maintenance knowledge of some problems often encountered in the application of speakers.

      1. The machine cannot be turned on.

      When this happens, you can check:

      1. Is the battery charged?

      2. Is it turned on after connecting to the power supply? If it is connected to the power supply, it can be turned on and replaced with a new battery. (Pay attention to whether the battery shrapnel can contact the positive and negative poles of the battery. 3: Check whether the switch button is damaged under the condition that the battery power supply is normal.

      2. Audio input is silent.

      In this case, you can check:

      1. First make sure whether the power amplifier and speaker are OK, you can insert the U disk or card to play whether there is sound? If there is sound, it can be judged that there is a problem with the audio input circuit.

      2. Check whether the audio input socket is damaged.

      3. Check if there is any problem with the audio input circuit.

      3. Do not read U disk.

      In this case, you can check:

      1. Whether the USB socket is damaged.

      2. Whether the power supply of the first pin of the USB socket is normal.

      3: Whether there is an open circuit or short circuit on the 2nd and 3rd feet of the USB socket, connect them to the 32 and 33 feet of the main control respectively.

      4: Whether the 4th pin of the USB socket is grounded.

      5: Whether the main control is damaged.