Lee Sheng-electronics factory Teaches you electric car charger Troubleshooting maintenance solutions for common problems: no DC voltage output toys charger, but the insurance slightest intact - 1, should first determine what the charger becomes king in control chip UC3842 whether for state or damaged. To determine the specific method is: powering UC3842 measured 7 feet on the ground voltage toy charger Which is good, if 7 feet and 8 feet voltage normal voltage + 5∨, 1,2,4,6 feet will have different voltage , then the oscillator circuit is enabled, UC3842 normal. If the 7-pin voltage is low, the remaining pins no voltage toy charger wholesale price, then the UC3842 is damaged; 2, if none of this breakdown a few feet, but the charger is still does not start, but also that UC3842 has been damaged, direct replacement. Lee Sheng Electronics Factory teach you a DC voltage output is very low maintenance method: first with a multimeter to check - under high voltage DC filter capacitor is bad, whether the capacity decline, whether the normal charge and discharge. If there is no more problem, then measure the current-limiting resistor switching power transistor electrodes and source of overcurrent protection if the measured value of resistance change burial, deterioration or open welding, poor contact. If there is no problem, then check - a high frequency transformer core is intact. In addition there may be outside z is the output filter capacitance decreases, or open welding, virtual access; power output limiting value of resistance change or virtual connection; power output line virtual connection and so on. Toys charger quotes, Lee Sheng-electronics factory quality, reliable, Lishui toys charger provided by Lee Sheng Yongkang Electronics Factory. Lee Sheng Yongkang Electronics Factory (www.ykshengli.net) Zhejiang Jinhua, electric car chargers leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Lee Sheng-electronics factory in leadership with the staff warmly welcome all inquiries negotiations to create Sheng Li Electronics Factory better future.