- #Bk butler tube driver pedal repair for free
- #Bk butler tube driver pedal repair Patch
- #Bk butler tube driver pedal repair plus
This sort of keyboard works by the keys manually pressing down on a conductive strip, which links a common ground to the positive end of the circuit, letting current pass through the diode you can see on the PCB. This was also the time to clean out all the cobwebs and cockroach shit that was in there… I took a stanley knife and shaved away about a millimetre of the side this freed them up enough that they now spring up as normal when released.
It turned out that the rubber guides that fit inside the keys and keep them in place had deformed a little over time. Regarding the sticky keys, all I had to do was remove the keyboard assemblage from the casing & pop out the offending keys. The total size of the box is then constrained only by the largest circuit board. That way, the only thing you need to surface mount is the MIDI out & power switch.
#Bk butler tube driver pedal repair Patch
Mounting everything else into the new case is going to be trickier the easiest thing to to would be to leave the synth on a basic patch & never change it. Simply cut through the plastic bracket where indicated, and unplug the jumper leads from the larger board. It would be very easy to disconnect the larger (treble end) board if you wanted to cut this synth down to fit it into a smaller casing. Note that the keyboard contacts are on two separate boards, which are attached to the main circuit board by jumper leads. I don’t think they will, so a rebuild is probably in order. I already have all my jumper leads wired up ready to connect to the bass pedal contacts – the question is whether or not the DX21 parts will fit in the case as built. Given the amount of work required to salvage this project, I’m thinking of going back to my original plan… that’s right: the DX21 is going under the knife. Notice I said nail, not screw – this is the other part of my stuff-up: it’s impossible to easily unassemble the case I made for the bass pedals. That severed 4 of the conductors, requiring its removal & re-wiring. However, I must fess up to having done something pretty effing stupid: during the final construction of the bass pedal assembly, I put a nail through the comms cable. For the record, parallel cable has 19 conductors – this means you could use an octave-and-a-half bass pedal unit to extend your range.
#Bk butler tube driver pedal repair for free
I scored a couple for free at a local computer store, and it was a simple matter of cutting the ends off & connecting one end up to my VGA plug, and the other to the foot pedal assemblage. The solution was to go back to a world of pre-USB comms cables the humble parallel cable has plenty of conductors for the job at hand.
#Bk butler tube driver pedal repair plus
I mentioned in Part I that my bright idea of using a VGA cable fell over due to the cable only having 8 conductors plus shielding ground.
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