For computers, keyboard failure is a serious problem. What are the causes of keyboard failure? What if the keyboard is broken? Then let's take a look at Bian Xiao, the computer maintenance training in Wei Xiang, Guangzhou. 1. Internal circuit problem: the keyboard is broken, which generally means that all keys can't be used normally. Focus on checking the internal safety electronic components to see if they are damaged by breakdown and the circuit is disconnected! 2. It may be because of water: this situation is easy to handle. Generally, some keys cannot be used normally. After entering the water, we first cut off the power supply of the keyboard and disassemble it with a screwdriver, so that we can see the electric film of the keyboard inside: we find each buckle and uncover the film to see the contacts inside. We check where there is mildew or oxidation inside, find the key that can't be used, and check whether the contacts are in good contact. We can clean them with anhydrous alcohol or washing water. Prevention of keyboard failure Guangzhou Wei Xiang Jia Dian Maintenance Training School suggests: Try not to hit the keys on the keyboard hard, don't hold down a key for a long time, keep the gaps between the keys of the keyboard clean, and don't be blocked by dirt! There are two reasons for keyboard damage, the first is the internal circuit problem, and the second is the water oxidation problem. If the solutions to the above two problems still can't be used, it is recommended to replace them with new ones, and you can connect the notebook with an external keyboard. Computer monitor maintenance course 0 * * 1 shift printer maintenance course 0 * * * 1 shift keywords: