Sir, I believe that is a ferrite bead.   I am far far from expert on this type of thing and I am basing that only on the label on the board but believe that is what it is.     What makes you think that particular component is bad?  If it is just because it is a short I think that is expected unless I am mistaken.  HTH.



I have a short in one of my blade halves that I have no idea how to even begin to figure out, when I put my meter between any - and + of the 12v (for instance the power plug, or anywhere) my meter (autoranging ) immediately jumps to 0.000XX ohms like a dead short then quickly goes to about 0.58 kOhm and settles there.  

I added a heatsink a week ago to the back of the board (of course with epoxy...bleh) and after that when powering it with that stupid barrell conector gridseed loves I heard the unmistakable bzzt like there was a short so I immediately unplugged and the above is what I've found with the meter.  Its been dead since as I didn't think powering it would be wise and I don't know where to begin looking.

The way the meter behaves seems different than say touching the leads together or putting the leads across a known value resistor (or one of the beads even)  thinking it may be indicative of something.  Could be my imagination and inexperience though , but it is not a dead short...


Any idea on mine?  Where to even start looking?