What electronics component is this?

Question

Update:

The one the pen is pointing to!

Update 2:

It's on a electric piano circuit board for midi (midi out isn't working).

Answer 1

Favorite Answer

As others have said, it's an RF choke, used to block parasitic RF. This component can't fail (unless there's a dry solder joint)

Answer 2

It looks like 2 ferrite beads.  Inductors.  Chokes.

Answer 3

https://tttapa.github.io/Arduino/MIDI/Chap02-MIDI-...

Answer 4

THIS IS A RF CHOKE TO BE USED TO BLOCK UNWANTED SPIKES.

Answer 5

Looks like two ferrite beads strung in series.

• derfram

  Lv 7

  3 weeks agoReport

  Looks like ferrite beads to me too. 
  

Answer 6

what I see is part of a printed circuit board with a metal piece attached, which has two holes in it. The PC board has a transistor on the left, several resistors, several strange black components, and what appears to be a metal piece, perhaps a transformer. 

the black components are a bit blurry.... except for the wires soldered to the top, they could be capacitors. 

re other answers, yes, I see now that they are ferrite beads. large ones. 

Answer 7

I see several, a transistor, a couple 1/4 watt resistors, and what looks to be a pen, pointing to ferrite chokes. a heavy loop of solid wire for current, with ferrite beads to make a low inductance choke.

(power supply circuit perhaps)

Answer 8

That's weird I'm not sure!

- If 3 wires on their bottom they are transistors. Transistors are sometimes 'jumped'.

- If 2 wire, my best guess is they are capacitors, especially since I think I see a "-" sign and capacitors are directional (and resistors are not).

But I gotta say, I've never seen a jumper quite like that!!!

• Bruce H3 weeks agoReport

  Would capacitors be joined like that?