Steve Musso posted:Here's the PNC instruction sheets.
Thanks, I think I'll add that to my TAS documentation in the document thread here, I posted most of the other TAS stuff, just never had this particular document. 
superwarp1 posted:So if you want to use the chuff output from the EOB to the smoke fan you will need to find the first run firmware chip. Good luck with that. Unless the firmware chip in your junk board is still good.
Sadly, it's the chip that is the issue, though I suspect an issue with the board as well. Finding one seems like the impossible dream. I actually had one some time back, but I used it in a board that was dead.
NelsonW posted:Just a thought (which at my age now can be dangerous) if the original one works but fails after it gets warm. Why not just add an IC heatsink using thermal tape. Same as used on PC video cards.
That thought crossed my mind. However, there are two reasons.
- This is a customer's locomotive, and I don't know for sure that would solve the problem totally. I want to fix this once, I really hate to get boomerang repairs.
- There is no clearance over the IC, and there's also no clearance at the top of the tender for the boards. That means I can't really put anything vertically on the IC, and I can't raise the R2LC either.
