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Cisco AIR-AP1131AG-E-K9 AIR-LAP1131AG-E-K9 dead upon re-estabilished powerline

posted Nov 19, 2013, 2:55 AM by Daniele Albrizio   [ updated May 22, 2017, 6:10 AM ]
I noticed a mass death of MANY AIR-AP1131AG-E-K9 AIR-LAP1131AG-E-K9 Cisco access point after serving online for a long period (5 or 6 years). They simply do not power up anymore using legacy PoE adapter AIR-PWRINJ3 or legacy power supply (46 volts). Some of them still powers up using AIR-PWRINJ4 (56 volts).

It seems that the problem is due to a failure of an electrolitic condenser of the onboard switching power supply.

My collegue is investigating the problem.

Updates and warranty-voiding risky solution will follow hopely soon.
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