Since my Wersi Comet started to come back to life again there are three questions I have been asked surprisingly often in the comments: "Does your Comet have a 'Magic Fingers' MFX5 module, does it work, and what does it actually do?"
The first part was easy to answer: Yes, it does have an MFX5. However, until recently it seemed like it wasn't working and I nearly gave up on trying to repair it. But then I noticed a wire that had detached from one of the plugs on the backside of the MFX5 circuit boards in a hard to see and even harder to reach place.
After reattaching it the magic started - once I found a cryptic German user manual online.
And so to answer the third part of the question I have now made this video where I go through the things it can do:
Arpeggiator 0:00
Song: "Da' Ya' Think I'm Sexy" (Rod Stewart/Carmine Appice/Duane Hitchings) 2:30
Marimba effect 3:50
Song: "Blue Spanish eyes" (Kämpfert/Singleton/Snyder) 4:35
Automatic Organ Chords 6:13
Song: "I've Grown Accustomed to Her Face" (Frederick Loewe/ Alan Jay Lerner) 6:55
Sequencer 9:00
Song: "Tjo Och Tjim Och Inget Annat" (Ulf Peder Olrog) 11:05
The only things I don't demonstrate is step-recording of a sequence - which is basically entering the notes one by one followed by a tap on a pedal, and
saving/loading from a cassette. I cannot do that because the cassette interface plug is connected to the drum machine and I don't have the instructions on how to connect the MFX5 module to a cassette recorder. The person who build the organ just left the connections on the circuit boards unconnected.