What is this component?
What is this component?
(OP)
Hello,
This is a Roland Amps Board Assembly 5100009354 in a Roland Amps KC-110.
The one of the jacks does not take input signal anymore and it makes a lot of static noise.
What I am trying to do is replace all the components on the board but I can't recognize one of the components.
Attached are the pictures and the component in question is circled in red.
Thanks,
This is a Roland Amps Board Assembly 5100009354 in a Roland Amps KC-110.
The one of the jacks does not take input signal anymore and it makes a lot of static noise.
What I am trying to do is replace all the components on the board but I can't recognize one of the components.
Attached are the pictures and the component in question is circled in red.
Thanks,





RE: What is this component?
TTFN (ta ta for now)
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RE: What is this component?
RE: What is this component?
It's not that old - Roland has a video from 2010 introducing it. It is from the period of time when poor quality electrolytic capacitors were being put into a lot of products, so if there are no other diagnostics available, I would start with those. The other components should still be OK. Also, be on the lookout for any on-board fuses. There are some that look like small capacitors; the board labeling will indicate them if they are there.
I agree with Compositepro that the large black parts are ferrites; the board should have an "L" prefix on a number next to them if the are. I don't know if ferrites can fail; only the wire passing through might have a failed solder joint or otherwise fractured, so there's no need to buy new ferrites.
RE: What is this component?
There is absolutely no marking on the component. It has a marking on the board next to the component (L252.) I don't think that helps much.
There is a similar marking (L252) on the board for a different component. It is for a jump wire.
I just ordered the capacitors.
RE: What is this component?
RE: What is this component?
The other one is likely a ferrite bead too, there are lots of different styles, some look like jumpers.
" We are all here on earth to help others; what on earth the others are here for I don't know." -- W. H. Auden
RE: What is this component?
RE: What is this component?
Z
RE: What is this component?
-AK2DM
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RE: What is this component?
http://schems.com/bmampscom/roland/