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== Mod-wheel / bender ==
[[File:Bender mounting.jpg|alt=mod-wheel assembly|thumb|mod-wheel assembly|300x300px]]
If the mod-wheel has no hearable effect, but is movable and snapping towards the middle, the small black hexagon screw (seen in the middle of the picture on the right) is eventually not tightened. Just tighten that screw and test the bender again.
If then the bender has a hearable effect, but
The forward-pressing feature of the bender can also do just nothing: There is a small pressure sensor. The piece of ribbon inside seems to lose it's ability for appropriate conduction over time. It is taking apart in the following two pictures:
== Leaked caps ==
In my case, there was cracking sound and suddenly no sound at all, because of leaked caps C11 and C12: They damaged the conductor beneath. Remove the faulty caps, check the conductor, and replace the caps with same capacity and same voltage or higher voltage.
[[File:Leaked caps.jpg|none|thumb|leaked caps]]
[[File:Removed caps.jpg|none|thumb|removed caps showing damaged conductor]]
[[Category:Instrument repairs]]
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