The Smoke regulator is now an obsolete part. Some of us have developed a work around for this very problem,…..however, usually the case of anemic smoke, or erratic smoke operation. You can bypass the regulator, and install a TMCC value resistor in the 20-27 ohm range. This does require some planning, and isolation of the smoke resistor from the PCB. The regulator is left in place,…..we just leave it sit there, allowing it to believe it’s doing a wonderful job,…..you have to isolate the traces of the smoke element resistor, and wire one side to ground, the other side back straight to the feature out on the radio board. First, you need to verify if your fan still spins like it supposed to, and your radio board doesn’t have a cooked smoke ( feature ) output. If those two items work, you can proceed with a bypass. If not, another solution would be GRJ’s super chuffer and chuff generator. You can rebuild that smoke unit, again, isolating a few items to work with John’s stuff….so there are a couple options for repair….
Pat
