The quartz clock at home suddenly stops and the hands freeze. Many peoples first reaction is to throw it away and buy a new one. In fact, as long as the movement does not suffer quot;fatal injuries quot;, we can completely give it a new lease of life ourselves. The core components of a quartz clock movement are the coil and quartz crystal oscillator. If they are burned out or broken, they cannot be repaired and the entire movement can only be replaced. However, this type of failure is extremely rare in actual use, unless you buy a low-quality product. The root cause of most movement quot;strike quot; often comes from the external environment - differences in temperature and humidity in different rooms will cause dust and sludge to accumulate inside the movement, increasing the resistance to gear rotation; the metal contacts of the battery compartment will also rust due to moisture and oxidation, resulting in poor circuit contact. These are quot;surface problems quot; that do not require professional electronic knowledge and can be solved with a screwdriver and an eraser. Before taking action, remember to remove the battery and observe whether the pointer has corroded the movement due to battery leakage. If there is only slight rust, congratulations, the repair success rate is over 80%. When many people encounter this situation, they often give up directly, but as long as you are willing to spend ten minutes, you can not only save a lot of expenses, but also gain a full sense of hands-on accomplishment. Next, we will uncover the movement casing and go deep inside to clean the lesions.
When disassembling the movement, you will find that most quartz clock cases are not fixed with screws, but rely on plastic buckles to snap together. Prepare a small flat-blade screwdriver and gently pry open all the latches along the gaps in the shell. Be sure to use gentle movements to avoid breaking the latches. After removing the casing, be as careful as you would with a precision instrument-the row of brass gears inside are tightly arranged, and you may bring them out or mess them up if you are not careful. It is recommended to use your mobile phone to take a picture of the original position and forward and reverse directions of the gears, then remove them one by one and place them on a clean white paper. After removing the top gear set, the circuit board on the right side is exposed, which is the key part of power transmission. Carefully check the two metal shrapnel (power pins) connected to the battery on the circuit board. If the surface is dark green or black, it is a poor contact caused by rust. Gently polish the surface of the shrapnel with fine sandpaper or hard paper until the metallic luster is exposed, and then use a cotton swab dipped in a small amount of alcohol to clean the surrounding dirt. After cleaning, don't rush to reinstall all the gears. You can temporarily install the second hand and put in a new battery to see if the second hand resumes beating. If the second hand starts to move, it means that the fault has been eliminated, just assemble it in the reverse order; if it still doesnt move, it is likely that the coil or crystal oscillator is damaged, and it is not too late to consider replacing the movement at this time. Handle it with care every step of the way, and your quartz clock has a good chance of starting quot;ticking quot; again.