Electronics > Beginners

Help identify component

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wrinklehead:
I am trying to repair a board with a component I cannot identify.  (Please see attached). Component in question is marked c138 which would lead me to believe it's a capacitor however looking at it it looks like a diode with the polarity marking.  I'm thinking this is some type of cap with 2.2uf and 35 volt rating.  Am I on the right track here?

Gregg:
Yes, it is a capacitor.  But C122 Looks like your problem

Rigolon:
Just adding that it's probably a Tantalum capacitor, and yes it should be 2.2uF and 35V rating.

Also,
--- Quote from: Gregg on December 20, 2019, 06:32:01 pm ---But C122 Looks like your problem


--- End quote ---
I agree.

wrinklehead:

--- Quote from: Rigolon on December 20, 2019, 06:44:21 pm ---Just adding that it's probably a Tantalum capacitor, and yes it should be 2.2uF and 35V rating.

Also,
--- Quote from: Gregg on December 20, 2019, 06:32:01 pm ---But C122 Looks like your problem


--- End quote ---
I agree.

--- End quote ---
Thanks guys.  C122 is indeed the problem or at least a problem but shares the same markings as c138.  I figured given the state of C122 it might be easier to identify C138.

james_s:
It very conveniently says right on the board what it is. Definitely a tantalum capacitor, with a little luck it will be your only fault as shorting out is a notorious failure mode of tantalum capacitors which are otherwise excellent in nearly every respect.

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