Grand Seiko Spring Drive SBGC229 Replica watch

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Grand Seiko Spring Drive SBGC229 20th ＆ NISSAN GT-R 50th Anniversary Limited Edition Replica watch

Brand Grand Seiko
Item Type Grand Seiko Spring Drive
Model SBGC229
Movement Self Winding/Automatic
Case Titanium + Ceramic PVD
Gender men
Case size 46.40mm,16.20mm
Dial color white
Strap Crocodile White
Clasp Pin Buckle
Glass Sapphire
Year 2019
Water resistance Yes
Functions Hours,Minutes,Seconds,Date,Power Reserve,Second Time Zone,Tachymeter Chronograph


audemars piguet skeleton replica Quartz watches use CMOS large-scale integrated circuits, so there are few external components, generally only quartz crystal, oscillation compensation capacitor and trimmer capacitor, the output of the integrated circuit is connected with coil and gear conversion components, the output end is connected with conductive rubber, liquid crystal digital display screen, High-end features such as audio, program control, language timekeeping and lighting. This article focuses on how to quickly determine faults and troubleshooting methods in amateur situations.1. First, observe whether the appearance of the watch to be repaired is caused by external force, poor waterproofing, and improper use.2, open the back cover, remove the battery with a multimeter voltage file to measure whether it is lower than 1.3V or it should be replaced.3. Dip the second gear, observe whether the gear set is flexible, whether there is any misalignment, card collision, and whether the three pointers are loose.4. If the above battery can be installed properly, connect the positive electrode of the battery with a pen of high-sensitivity multimeter, and measure the two ends of the coil with the other pen, with or without the second pulse and voltage value, or simultaneously measure the two ends of the coil with two test leads.

Whether there is a positive and negative second pulse (the swing is more obvious when there is a second pulse).5. If the hands are not moving or fretting, observe whether there are any foreign objects around the armature of the stepper motor. If not, remove the coil to determine whether there is a local short-circuit point. The coil diameter, number of turns, and resistance are different. The wall clock is generally about 400 to 500, while the quartz watch is 1~3K. The left and right are not equal, the general rule is that the larger the watch core, the smaller the resistance. I used the MF18 multimeter to measure the resistance of the diamond brand quartz wall clock coil 400 , the value of thebrand coil 510 , Shanghai women's watch 3K Guangzhou men's watch 1K.6. If there is no second pulse, it is necessary to measure whether the voltage between the two ends of the crystal is about 0.2 to 0.8V. For quartz watches with digital display, the measurement pulse should be tested on the corresponding electrode of the watch display. patek philippe calatrava replica

If the resistance of the coil and the crystal are normal, after removing the integrated circuit board, measure whether the capacitor has short-circuit leakage, and replace it with a ceramic capacitor. The oscillating capacitor is 5P to 30P, and the trimming capacitor is tested with a fixed capacitance of 2P to 25P. change. If there is a boost capacitor and a filter capacitor, it can be tested with a 0.01 to 0.047 UF ceramic capacitor. The general rule is that the core volume is large and the capacitance is large. The role of the capacitor in the circuit can generally be judged as follows: the quartz crystal has an oscillating capacitor at one end and a trimmer capacitor at the other end (sometimes a monolithic capacitor is also added to the trimmer capacitor), and the other end of the two capacitors is connected to the power supply due to fine tuning.

The capacitance is unique and easy to distinguish. The filter capacitor is connected to the positive terminal of the power supply at one end and to the integrated circuit at the other end. The second end of the boost capacitor is only connected to the integrated circuit. Filter capacitors and boost capacitors are commonly found in large-scale integrated circuits on quartz watch cores produced in recent years. When the above capacitor has a short circuit or a serious leakage, the circuit can be stopped.When detecting whether the watch screen is normal, you can use the multimeter meter pen to wrap around the power cord of the heating iron in the positive heating for 3 to 5 turns (the two ends of the cable are not connected to the power supply in suspension), and pinch the sides of the watch end with your fingers. (literally face up), slide the test leads slowly from the sides of the liquid crystal electrodes, and the corresponding digital strokes should be displayed when the test leads touch the respective electrodes. Otherwise it is damaged, you should change the watch screen.

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