I had a Transformers The Pin in the past with issues. There was no 6 v at the node board and Stern provided zero support (no manual, tech support, nuttin'). It also appears that the node board is unique to The Pin and is now unobtainum. I was fortunate that a fellow Pinsider sold me a NOS board. It is worth nothing that I was able to use a PC power supply hardwired to the start switch for the missing 6 volts prior to obtaining the properly working node board. It worked just fine.

Good luck. Neat little machine.