Are These Capacitors?

[Nerfinator]

I think these are smd capacitors, if they are, am I correct in assuming that they've gone back with the blue stuff on the side or the wet, oily look on top?

If they are not capacitors, what are they?

Thank you!

https://onedrive.live.com/redir?resi...6E024849%21743

[goontron]

Re: Are These Capacitors?

Not caps. Iirc they are inductors.

[Nerfinator]

Re: Are These Capacitors?

Ok, cool and from the sounds of what an inductor is, I should be able to test it by using a continuity meter on each terminal, if it chirps, it's good, if not, it's bad, right?

[stj]

Re: Are These Capacitors?

pretty much

[Agent24]

Re: Are These Capacitors?

Continuity is not the only test for inductors. It will tell you if the inductor is not open-circuit, but it will not always tell you if it's OK.

Inductors (and transformers) can occasionally fail with a shorted turn which will make them useless but not affect the continuity end-to-end.

[Nerfinator]

Re: Are These Capacitors?

Interesting Agent24. Is there any way to visually determine if an inductor has failed? I see some blue coloring on the sides (as per pictured) and the top corner of three of them look oily-wet.

[Agent24]

Re: Are These Capacitors?

None of them look bad to me. The blue and black stuff is just going to be glue or such holding the two haves together.

Obvious inductor failures will show as the whole thing clearly burnt up or if a lead has obviously broken off, or the core is smashed.

Otherwise, internal failures are not obvious. Insulation breakdown causing shorted turns would not typically be visible, unless some arcing occurred to create a burnt area, but even then you likely wouldn't see it unless it was:
1) An outer winding
2) The windings had no covering

SMD Chip inductors failed due to internal breakage\crack may be seen on X-Ray but a continuity test would make more sense!

[budm]

Re: Are These Capacitors?

Those are the inductors for the high frequency filtering for the output of the Class D power amplifiers IC2703 (YDA164C).
Are you having sound problem in the TV?

[Nerfinator]

Re: Are These Capacitors?

First and formost, thank you all for your input and expertise. As a person that never really did anything with electronics and now diving head first into them, I am continually amazed with how little I know.

As for bad sound, no. The photo is of the input control board for a 60" Sharp that sounds like it has a bad LED driver board (panel death). I'm just a rabid dog when it comes to stuff like this and don't want to admit defeat but as I've already replaced the T-Con and power board and I've ordered a new input control board, I think I might have to. It's a customer's TV and it's taking a lot of space in my shop.

Thank you all though, I really appreciate it.