Penguin's mobile phone washing machine is disassembled as follows: 1. Because the upper cover is tightly buckled, find a place to make a small opening with a utility knife, and then slowly pry the upper cover open with a screwdriver. 2. After opening the upper cover, the internal structure, control panel+motor+bubbler, its working principle is relatively simple. Loosen the four screws and remove the bubbler. 3. Remove the battery terminal. Four batteries. 4. During the disassembly process, it was found that some areas of the IR receiving plate were corroded and flooded, which should be the reason for not working. I tried to clean the infrared receiver board, but it still didn't work. TB added a new board, replaced the old one, and it can work normally.