The laptop power adapter is one of the most prone to failure accessories,
and the all-plastic sealed case is not easy to open, so many people are helpless
when the laptop power adapter is damaged. In fact, it is not so difficult to
troubleshoot the power adapter at home. Here are some practical methods on how
to troubleshoot the adapter yourself.
In the case that the power adapter has a problem, first of all we need to
determine whether the contact problem caused the failure of the adapter. We can
first try to shake the power connector or laptop battery lightly to see if the
power adapter or laptop battery is in good contact. If the contact is found to
be abnormal during the inspection process, the cause of the failure is likely to
be the deformation of the power connector of the computer or the decrease of the
elasticity of the battery contacts. Try to reinstall the power adapter or
battery.
After checking the connectors of the laptop power supply and battery, if
there is no problem, then the second step we need to do is to open the package
of the power adapter, and then use a multimeter to measure the output voltage of
the power adapter or battery, so as to Judge and check whether the output
voltage is stable, and whether the actual output voltage value is consistent
with the nominal voltage of the power supply. If the output is unstable or the
actual output voltage differs greatly from the nominal value of the product, the
damaged power adapter or battery needs to be replaced.
If in the above detection steps, the output voltage and contact of the
power adapter are normal, then the fault is probably not the adapter itself, but
the notebook power board or motherboard. This requires the user to send the
faulty laptop to the repair place, open the laptop case and check whether the
power board is in good contact with the motherboard. If the power board and the
battery are in good contact, then the replacement method can be used to check
whether the power board is normal. If any abnormal situation is found, it can be
replaced in time.
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