6S water inlet machine B+ short circuit with 5A power meter and the battery can not burn out the fault point!
There are many ways to repair the B+ short circuit of the water inlet, and it is good to buckle a capacitor if you are lucky. There are different judgment points between the degree of water ingress and the degree of burnout. Of course, there are also dystocia. The next step is to talk about my ideas: 1. Minimize the mistaken disassembly, first use a 2A power meter to clamp the electricity, generally adjust to 2V . If it is obvious, hot spots will be felt. Use the method of 5A burning to adjust to 2V normally. Don't increase it too much, it will burn the machine. (Note: When using 5A burning, you must know which way is short. Connect the positive electrode of the power meter and touch the hot spot. Find the fault). 2. The positive and negative of this machine are short, and the meter will be used when the 5A is turned on to 0.7V, so it cannot be burned. Observe the water inlet point and the abnormal part, and rule out one by one that the two capacitors
were buckled and scratched by the customer. For fear of B+ touching the ground, they would separate them, and the cover would be helpful for observation. Display IC. Audio. Amplifier power supply tube. Light control. The last one (flash). This is not a random dismantling. If you see that the IC has moldy wings, lift and solder, do it in one step, otherwise the water inlet will be repaired and the rate of repair Higher. The display circuit of B+ short-circuit and easy to burn out is the same as the flash. The ICs I removed are often removed by repairing the 6S water inlet plate, so I removed the flash IC. B+ repaired the normal
clip electrical test function, and the repair is complete.
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