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  1. Ahlborn Hymnus 350 mechanical keyboard problem

    Hi everybody, I recently unscrew the rear panel of a keyboard of my Ahlborn Hymnus 350 organ. I thought there were there the contacts of the keys, but not. In fact, this long metallic rule (see attached picture, it's the rule with 9 circular screws) seems to be a huge "screw" keeping the keys in...