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Troubleshooting

* The wifi access point is no longer visible to laptops and other access devices.

_ Double check if the power supply still works. Use a multitester to check for absence/presence of power or for voltage drop. If your site is using a Mikrotik router (Metal 2SHPn Wi-Fi hotspot Access Point), note that its power adapter has 24V 0.8A rating.
It connects to the access point via a PoE injector. _

_

When confirmed that the power supply is dead, buy replacement power supply with the same power rating. Stores like Lazada and CD-R King may carry such replacement power supply. A variation in terms of amperage (say 1A) can also be a replacement.