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Modular Amps
Egnater / Randall Modular Amps
RM100 midi foot controller not responding.
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<blockquote data-quote="Whoopysnorp" data-source="post: 115336" data-attributes="member: 1929"><p>I went through a big series of problems with an RF4 footswitch. It would sometimes work, but more often than not it would simply not turn on. In those situations, sometimes it would eventually start working, or it would do this weird thing where all four LEDs lit up and stayed lit. At first I thought I had traced the problem to a cold solder joint, because it worked pretty well for a while after I fixed that, and then it started doing it again. I think more solder joints went cold, but it was tricky to identify them.</p><p></p><p>There is a fuse soldered to the footswitch PCB...I can't remember the location or designation, but it's a little oval-shaped silver thing. Eventually, I became pretty convinced that one of the solder joints on the fuse was cold. I re-soldered it without having any lasting effect, but then I decided to swap the fuses between my RF3 and RF4 footswitches. Both footswitches worked fine after that, and the RF4 has stayed working. I think probably the joint was still bad on the RF4's fuse after my first attempted fix, and swapping the fuses was incidental.</p><p></p><p>Anyway, what I am trying to say with all this is that you should check for cold solder joints. I would be more liable to believe that's the issue than the MIDI cable connector. Probably what's happening when you wiggle the cables is that it's modulating the amount of current going through the path just enough to get past the solder joint.</p></blockquote><p></p>
[QUOTE="Whoopysnorp, post: 115336, member: 1929"] I went through a big series of problems with an RF4 footswitch. It would sometimes work, but more often than not it would simply not turn on. In those situations, sometimes it would eventually start working, or it would do this weird thing where all four LEDs lit up and stayed lit. At first I thought I had traced the problem to a cold solder joint, because it worked pretty well for a while after I fixed that, and then it started doing it again. I think more solder joints went cold, but it was tricky to identify them. There is a fuse soldered to the footswitch PCB...I can't remember the location or designation, but it's a little oval-shaped silver thing. Eventually, I became pretty convinced that one of the solder joints on the fuse was cold. I re-soldered it without having any lasting effect, but then I decided to swap the fuses between my RF3 and RF4 footswitches. Both footswitches worked fine after that, and the RF4 has stayed working. I think probably the joint was still bad on the RF4's fuse after my first attempted fix, and swapping the fuses was incidental. Anyway, what I am trying to say with all this is that you should check for cold solder joints. I would be more liable to believe that's the issue than the MIDI cable connector. Probably what's happening when you wiggle the cables is that it's modulating the amount of current going through the path just enough to get past the solder joint. [/QUOTE]
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Modular Amps
Egnater / Randall Modular Amps
RM100 midi foot controller not responding.
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