Apple laptop power adapter bad how to do it

Answer:

Fifth, check the capacitor resistance inductance with or without problems, such as capacitor drum package, the best timely replacement, so as not to leave hidden dangers. The above is the power adapter maintenance of the five steps, through these five steps, you can check the power adapter. Of course, if there is no big problem, it is best not to easily open the shell, if necessary, it is recommended to find a better professional protection.

Fourth, the optional power adapter In the maintenance process, because the current power adapter has been a large number of patch components, once the components out of the problem, the difficulty of maintenance even greater. Power adapter power is also increasing day by day, so the test of electronic components is growing, if the power adapter using the quality of electronic components, however, PCB wiring improper, it is likely to increase the probability of failure. Therefore, the purchase of a good quality power adapter, the stability of the notebook is very helpful.

Third, in the test process, if the resistance pin is found in the solder, and then use the welding tool to repair it up, the power adapter and then installed, boot test, the results resolved. It should be noted that if the test process, encountered a capacitor in question, you can buy a model and capacity of the capacitor (the price of 5 yuan), and then the problem will be sold down the capacitor, the new capacitor welding up Can be. If you find a problem with the IC power chip, then the same way to solve, of course, because the IC chip is absolutely one of the most important electronic components of the power adapter, the capacitor is too complex.

Second, the power adapter has four plastic caps, as far as possible not to damage the adapter shell, shell damage, there will be electromagnetic radiation and other issues, affecting the stability of the machine. If the shell is damaged, try to repair. Disassembly process If the external power supply is not powered, then you can plug in the battery to try, if the machine can start normally, there may be a power cord or adapter problems. Open the appearance, open the shield, it is best to first check the welding feet, the naked eye can be observed, the circuit intermittent, generally poor contact. And then use a multimeter to detect whether the power cord is a problem, to simplify maintenance.

Power adapter repair five steps: First, if the original adapter has a problem, can not repair or too late to repair, you can use the other adapter instead, as long as the output voltage and power can be roughly equal. There are voltage regulator circuit inside the notebook, do not worry too much about the output voltage does not match the problem. In the maintenance, the first step need to do is prepare the tool. We need multimeters, screwdrivers, welding tools.