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2024-07-15: I recently installed a new security camera and needed a PoE adapter to power it. I rummaged around my junk cable boxes and happily found a PoE adapter (brand new, btw). I plugged it in and began to attempt to set the new camera up. And that is where things started to go off the road... and possibly through a guardrail. (I think I may have wasted a *bit* too much time on this one.) The power adapter in question is a Ubiquiti GP-A240-050G.
This should have been a simple job... I quickly realized I had a power issue and the camera wasn't booting up. I then realized that my PoE adapter didn't have a power light. I quickly double-checked input power - all good there. Then I searched for another PoE adapter...and couldn't find one. And it was a holiday with no stores open and I wanted the project done. Well lets just crack it open and take a peek... (and this is where I started to hike down a rabbit trail...)
Top of circuit board
Bottom of circuit board;
2026-03-28: while transferring this to the new website, I realized I never finished this. Below is a quick addition of the images I left off. I'll try to come back and finish this at some point.
Power Jack
Side view of the circuit board.
circuit board top view with through hole components removed
L1: LL00047V00 Mode Choke / Line Filter
MOV1: STE 10D561K Varistor
U3: M-TEK G24102SKGX 1000 Base-t Single Port Magnetics Module
Q1: Switching Transistor