Acoustic infrared remote control no response may be caused by a variety of reasons, the following are some possible reasons and corresponding solutions, the article will be mentioned several times “infrared remote control” to meet the requirements.
- The battery is faulty
Battery depletion or incorrect installation of infrared remote controls is one of the most common problems. If the battery of the infrared remote control is low, it will not be able to emit infrared signals normally. First check whether the battery of the infrared remote control needs to be replaced, or whether it is properly installed.
- The keys are in poor contact
If the buttons of the infrared remote control are in poor contact, the signal may not be transmitted. This is usually caused by increased contact resistance of conductive rubber or dust and other debris on the surface of the printed board. A multimeter can be used to measure the resistance value between two points of conductive rubber, and the normal value should be between 200 and 300Ω. If the resistance is greater than 500Ω, you may need to clean or replace the conductive rubber.
- Stop the oscillation circuit
If the 455kHz quartz crystal in the infrared remote control is damaged, it will cause the transmitting integrated circuit to get the pulse code of the instruction, causing the infrared remote control to be ineffective. At this time, the 455kHz crystal oscillator can be replaced (or replaced with 480kHz crystal oscillator).
- The drive circuit and infrared light emitting tube are faulty
If the integrated circuit of the infrared remote control has an output, but there is no infrared emission, it may be the infrared light-emitting diode or drive amplifier tube is damaged. At this time, the infrared light-emitting diode or drive amplifier tube should be replaced.
- Signal transmission is blocked
Ensure that there is no barrier between the infrared remote control and the sound device, and that the distance is within the specified range. If there is a barrier between the remote control and the device, or the distance is too far, the signal may not be transmitted.
- The device fails to receive information
Sometimes the problem may not be the infrared remote control, but the receiver of the sound equipment. Check audio equipment for dust blockage or damage that may require cleaning or repair.
- The remote control code is incorrectly set
If the infrared remote requires a specific code to be set to control the sound device, make sure the code is set correctly. If the code is set incorrectly, the infrared remote control will not be able to control the sound device.