Product name: Bluetooth audio amplifier board
Charging interface: Micro USB
Product model: XH-A153
Function type: audio amplification
Power supply voltage: DC5V
Bluetooth version: 5.0
Chip type: PAM8403 * 1
Number of channels: dual channel stereo
Output power: 3W × two
Magnification: 4 times
Appearance dimension: 93 * 42 * 25mm
Installation hole pitch: 86 * 35mm
common problem
1. Bluetooth connection failure.
Answer: The Bluetooth indicator flashes regularly when it works normally. If it is on or off, there may be a problem with the Bluetooth module
2. Mobile phones can be connected but laptops or desktops cannot.
A: If the mobile phone can connect and play music, it means that there is no problem with the Bluetooth power amplifier board. It may be that there is a problem with the Bluetooth driver of the computer. The version is too old or some files are missing. It is recommended that you uninstall it first and then install the latest driver.
3. The sound gets stuck when the volume is turned up. It can be played normally when the volume is turned down.
Answer: One of the reasons is that the power supply is too small. Check whether the 18650 battery is installed and whether the voltage is too low. You can replace the battery for testing;
The second reason is that 18650 batteries are not installed and the charging port is directly used for power supply, because the current that the power chip can pass through is relatively small (about 200mA) during charging, and when the sound is turned up, the power supply will be insufficient, causing the horn to jam. However, the power supply can be directly connected to the battery socket, bypassing the limitation of the charging chip.
Reason 3: If the power supply is OK, it may be that the power of the speaker is too low. For example, if the 3W output is connected to a 1W speaker, and the volume is turned up, the speaker will be stuck and may burn out.
4. There is too much noise when playing music, or there is low noise when not playing music.
A: The function of the power amplifier board is to amplify signals. The main source of noise is the radio clutter in the environment that is amplified by the power amplifier board. Therefore, a little noise is normal. If the noise is too loud, you can change the power supply for testing or change the horn for testing.
Package List:
XH-A153*1
2P connecting wire * 2