willygee posted:Jeff78rr posted:I had this same problem at one time with a PS3 loco. Sent it to MTH, was the Wiring harness rerouted over the supercaps, as GGG stated above. Very sporadic operation before but perfect after the service work. You could do the wiring rerouted yourself.
PS3 board wire rerouting and board check
this post should be a "sticky" so others see it for sure. (maybe it is?)