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Hua Yun 14 key Wireless Air Conditioner Remote Control HY-093
Air conditioning remote controller is a device used for remote control of air conditioning, it is mainly composed of integrated circuit board and buttons used to generate different messages. The remote control is mainly composed of a microprocessor chip that forms the remote control signal, a crystal oscillator, an amplification transistor, an infrared light-emitting diode and a keyboard matrix.
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Hua Yun 49 key wireless infrared TV remote control HY-044
The remote control is used for a long time, and the conductive sheet of the key is dirty, leading to the failure of the key.
The emergency solution is to carefully open the back cover of the remote control, dip a cotton swab with alcohol, wipe the conductive rubber on the plastic key piece and the printing surface of the printing board. Black material will be left on the cotton swab, and then replace the cotton swab and wipe again until there is no more black material. Then reinstall the remote control.
