I'm mucking about with an early Beogram 5005, which works fine, apart from not responding to or producing properly formatted Datalink commands.  In looking at the various Beogram service manuals for the 5005, it's pretty clear that the Datalink circuitry underwent a minor change from early-to-later Beogram models in the same family, with the introduction of a transistor between the Datalink I/O channel and the ROM at some point after 1985. That being said, it appears that no less than twelve different models of turntable utilized the same 5005/3000 circuit design, over the span of a decade. This question was asked on this forum years ago but never answered from that I could tell: Does a TX2 board 1, which apparently contains exactly the same hardware as the 5005, contain a ROM that is also programmed to respond to Datalink commands?  Has anyone attempted to solder on a 7-pin din to the TX-2 I/O board pad and see if the turntable responds to Datalink? I'm tempted to find a clapped out TX2 just to try it and see what happens, but I thought I'd pose a question first prior to recreating an experiment that may already have been definitively answered by others.