What if Combs bought a perpetual calendar on Taobao and it looks fake?

This phenomenon is generally caused by poor internal contact of micro button contacts on the panel after a long time. Interested friends can carefully disassemble the perpetual calendar and pay attention to the power failure! ! Then drop a little alcohol on the key, preferably to penetrate into it, and press it repeatedly. When testing alcohol volatilization, it can generally be solved; If it really doesn't work, you can take it to the radio, TV repair department and induction cooker repair department for repair. Ask the masters to change your keys. It won't cost much RMB, but it will be 10-20 yuan after all the keys are changed in May 4th at most. They may say no, because it doesn't make money but it takes a little time. Just say something nice, hee hee. If a friend with hands-on ability has a soldering iron, it will save more money. Go to the wholesale department of electronic components and buy some identical buttons. It doesn't matter if the tail of the button is long. Then let the tail show a little. This is how I repaired mine, and I also repaired two sets for my friends. Hey, hey, I'm free, because it was so cheap that I bought a lot at once. It is a pity to throw away a perpetual calendar that has been used for many years without other problems because of such a small problem. After all, they are with us every minute, don't you think? Friends? Good luck! I wish you happiness!