China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

Start repairing 2 damaged fluorescent light ballast. When the first electronic ballast is opened, it is found that the R3, R5, have been ablation, the meter measuring Q1, Q2 has been damaged, and then measuring the capacitance of the C5 has been broken down. In the daily collection of components to identify parameters similar to the resistance, capacitance and the new 13003 to buy together, the results plug on power, did not think of things happened. Is plugged in, the fluorescent lamp start duration of about ten seconds, the second is when the fluorescent lamp lighting and flashing, followed by "squeak." a sound circuit board emerging smoke, R3 and R5 also ignite a small fire, quickly cut off the power supply, in the heart of the Dungan failed! Due to the burning of the components is more, also not determine where the fault caused by the problem is, decided to re replacement of the damaged elements, but this is to be selected in line with the parameters for the components.