![]() ![]() I knew I didn’t need that little board, the signals I were after had to be somewhere in those two 16 pin connectors. They had flat cables attached, going to a small board which converts the signals from the keyboard into MIDI. Opening up the keyboard, I did not find one red 20 pin ‘MicroMatch’ connector as expected, but rather two 16 pin ones. I hoped these would prove similar to the one Grant used. I basically couldn’t find any cheap 37 key MIDI keyboards in any of the usual channels (Thomann, Sweetwater etc).įinally I found a store in France that had several “StudioLogic CMK-37” in stock. Doepfer no longer sells them, Fatar is impossible to get hold of (and I hear that they don’t sell directly anyway). I searched the interwebz for these keybeds, but it seems 37 key versions are not popular at all anymore. Since my Pro-One was pretty much unplayable I decided that this would be my first modification of it. A LOT of manufacturers (Doepfer, Novation, Access etc) use Fatar keybeds, they are pretty much the industry standard unless you are Roland or Yamaha. In the comment section of that post other people describe doing the same thing, using keybeds from gutted StudioLogic CMK-137 midi keyboards, which has similar Fatar keybeds inside. MTG Blog post about Pro-One keyboard replacement Music Technologies Group keyboard replacement All that is needed is some wiring and connector tweaks: The keybed inside is made by the Italian company Fatar, and it works pretty much the same as the original Pro-One keybed. In his blog he also posted how he replaced the original Pro-One keybed with a modern one from Doepfer. The guy who runs the show, Grant, makes a replacement CPU board for the Pro-One, as well as a MIDI kit. When googling around for replacement keybeds and MIDI kits, I stumbled upon Music Technologies Group. You can clean the membranes by taking everything apart, but it’s a lot of work and only helps for a while. From serial 8500 upwards they used a “membrane” type, which really really sucks. They come in two varieties: “J-wire”, which is the best one, is found on serial numbers 1 to 8500. The Pro-One is a fantastic little synth, but the keyboards are not fantastic. The tricky part was figuring everything out! This is not a very difficult mod if you have any experience with soldering and drilling and such. I strongly recommend getting my TM-2 kit instead □ I will also post info on my FB page: The below post refers to my initial prototyping using a StudioLogic CMK-37. ![]() The TM-2 kit will be available here: The Techsmechs Vintage Synth web page ![]() (You can sell the old keybed on ebay or keep it if you want to have the option of restoring it to original.) Even a novice can replace their old unreliable keybed, and the kit uses the same screw holes and so on – no modification of the Pro-One is necessary. UPDATE (April 2017): I’m in the process of creating a “plug’n’play” keyboard replacement kit using a modern keybed and all cabling and mounting accessories. ![]()
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