Chuff Generator Not Getting Power?

Did you check on the C-G to see if 5VDC is on the outside pins?  Could you be shorting something and not allowing the 5V supply on the Super-Chuffer to operate?

I don’t think so, though my multimeter does seem to show conductivity through all 3 ports on the J2 connection.

The only other thing might be is the Chuff sensor (yellow wire) isn’t going to the right solder point where the cherry switch used to be on the motherboard. I usually see this sensor as the middle solder point on other engines.

I would use the Lionel wiring diagram...if their service support site wasn’t down right now.

If you don't have 5VDC on the Chuff-Generator, I can assure you the LED will never light.

I brought out the multimeter again, and it only got a 3.4 mV DC where the 5V DC output wire connects to the SC and CG. I'm not sure where the problem is coming from since all the wires are matching to as illustrated in the manual's diagram...

Without being able to examine it, I'd suspect something amiss in the connection between the Super-Chuffer and Chuff-Generator. 

Question:  Is there track power on pins 1 & 2 of the Super-Chuffer?

gunrunnerjohn posted:

Question:  Is there track power on pins 1 & 2 of the Super-Chuffer?

Yes, there is.

I'd check closely to see if there's a short between pins 7 and pins 10 on the Super-Chuffer.

I tested again with an ERR Cruise Commander (since the small space in this engine warrants a smaller motherboard to include a new fan smoke unit) and same result.

I think there is a short between pin 7 and 10. There’s almost no resistance when I multi metered both at once. I swear the SC gets pretty hot under power. Still I don’t see how it could have a short when my wiring matches the instructions.

Not much I can do from afar, if you remove the Super-Chuffer and send it down, I'll check it out.