The Main Reason For Damage To The Power Adapter!
We have a total order four common situation, namely: line fault, the output voltage is too high, the output voltage is too low, the insurance damage.
First one:line fault:
Line fault is well understood, it is the charger wire may have no power or damaged, replace this wire can solve this fundamental problem.
Second one: the output voltage is too high
There will be the problem of high output voltage, usually from sampling voltage and voltage control circuit.
Third, the output voltage is too low.
Switching power supply load short-circuit, the output voltage filter capacitor or rectifier diode failure, the switch performance degradation, poor transformer, bad filter capacitor.
Fourth, the insurance damage
Insurance damage mainly the rectifier bridge, diodes, etc. In addition there may be interference circuit resulting impact.
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