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Posted 25 March 2018 - 04:44 AM
Posted 25 March 2018 - 05:00 AM
The charger/PSU could be faulty, or the circuitry that distributes the power in the laptop might have the fault. Overall, the charger unit is probably more likely to be bad.
To find out where the fault lies without having workshop test equipment, you'd need to get the temporary use of another power pack (or see if your PSU has the same problem on another laptop that uses the same type). Looks like the PSU is a fairly common type supplying 19/19.5V to a widely used concentric DC plug.
Edited by Platypus, 25 March 2018 - 05:01 AM.
Posted 25 March 2018 - 09:51 AM
Your charger (ac adapter) will have Lenovo part number(s) and/or an FRU number. Make sure you only buy a genuine Lenovo adapter as the knockoffs tend to have wildly varying quality.
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