Since this is my first question here, I hope this is on topic.
The power supply of one of our old CISCO Aironet 1231G wifi access point failed recently, after a power outage. I think that the power supply failure took something in the AP with it, because even using a known good supply I get nothing when I plug the device in. I opened the device and I think I found the failed component, marked CR1006:
Considering the blackened pins and PCB traces, I think this is the most likely culprit. I am a relative novice when dealing with electronics though, and I have no idea what this thing is (or rather was). My own research led me to believe that this is some kind of diode, other, more obvious, diodes are also marked as CRxxxx, but I don't see any polarity markings. Here is a second picture which show the markings better:
I found nothing about this using Google. Poking it with a multimeter gives me 285 ohms regardless of polarity.
This device is not anything that is really important anymore, and a professional repair is not economical (the AP is at least 8 years old), but I would like to try this repair anyway, as learning experience, and because I dislike throwing repairable equipment away.