I am repairing a drone for the first time but I don't know what this piece is. All my instincts point to resistor, but I've never worked with pieces this small yet. The first picture is the piece as it was on the board. The second picture is the piece off the board with regular tweezers for scale. It has no markings on it, so how can I tell what it is.

 

Looks like a ceramic chip capacitor.

 

Looks like a ceramic chip capacitor.

How would I find out what to order to replace the part, with no ID number? Look by size maybe?

 

How would I find out what to order to replace the part, with no ID number? Look by size maybe?

How do you know that the component is bad and needs replacing?

If the component is not damaged,
use a resistance meter and measure the resistance.
Then use a capacitance meter and measure the capacitance.

 

How do you know that the component is bad and needs replacing?

If the component is not damaged,
use a resistance meter and measure the resistance.
Then use a capacitance meter and measure the capacitance.

I haven't tested it, cause I didn't know what it was. I will be testing (Not sure why I didn't think about that.) Thanks for the help.

 

The symbol shown at its board location looks like a diode?

 

The symbol shown at its board location looks like a diode?

You beat me to it

 

Hello,

The diode symbol also confuses me.
It could be a ceramic chip fuse:
http://www.littelfuse.com/products/fuses/surface-mount-fuses/thin-film-chip-fuses/437.aspx
http://www.littelfuse.com/products/fuses/surface-mount-fuses/nano-2-fuses/476.aspx

Are there any markings on the part?

Bertus

 

If it was a diode then polarity marking of the component would be a necessity but there doesn't appear to be any.

 

Do to the color it kind of looks like a Fuse. However it is rather thick compared to the fuses I see in board I repair. However it could be as stated before a CAP with out a Schematic it would be hard to know what you would need to replace it with. Most times in repairs that I have to do, I have donor boards that I can use to take parts when needed. If I don't have a good donor board for parts I just take what the Schematic says it should be.

With a Diode board placement I would expect it to be a fuse.