PS1 reverse unit bad?

Has the battery been changed? Check that first.

Chuck, it has a BCR.

thx, Don

I assume you know about moving the throttle up and down once, so the next likely thing is a bad chip or bottom 'motion' board that will have to be replaced.

Assuming you know how to operate PS-1?  Proper transformer, voltage less than 10 when first coming out of reset?  If you know how to operate it, does it make chuff sounds just no motion?  Or does it restart with 2 dings?

Is BCR charging, could be bad solder joints rear of engine at PCB, bad harness, bad battery harness if no shut down sounds when power removed, bad bcr, ID conflict if you can't get it to move out of rest beyond state 1, locked in neutral (did you try a reset), bad transistor, bad diode solder joints.

Most likely it is repairable, but need to know more about sounds it makes when you start up and cycle power.  G

Yes.  I tried checking that it was not locked in neutral.  I also tried the manual procedure to reset default features, but I can only get 1 clink when moving the throttle up and down from high to low voltage.

Is the bottom board AD-4500001 ?

Don

G,

I'm running conventional.  I get 2 clinks when starting first powering up - RESET mode.  Then cycling power by moving the throttle or hitting the direction button it will not move.  When I power off I hear 1 ding.  I also tried a different BCR.

thx, Don

If you can not get pas the first reset state when cycling power to try a reset, the board has an ID conflict and must be reprogrammed.  I can do this and would only need the boards.

Yes bottom is AD-4500001, but this sounds like a processor issue on the top board. G

Have you done the feature 18 reset?  If so, read on.  Pull and reseat the Protochip.  If that does not work, put in another known good chip and see what you have.

When it starts up and you put it in forward direction mode, wiggle the 4 pin tether.  If you get movement, open the locomotive and tab solder the 4 pins with a hot solder iron.

Don't replace it yet if it is not what I mentioned.  Get it to a tech that has the MTH kit with 4 special chips.  Stay away from the reboot chip for the 3 clanks.

Marty, thanks for the reply.  Unfortunately I can't get past the first feature.  Throttle up/down 1 ding, then no more after that.  This is my only MTH steam loco.   The only other MTH I have a Railking Zephyr, not sure if swapping chips with that would help.

thx, Don

Don, one way to find out.

as Marty pointed out  i have ran into the bad solder connections as Marty pointed out earlier resoldered and my ps1 engine ran fine!

Alan

If you elect to try swapping chips, you MUST use a PLCC extraction tool, or you will likely be needing one or more boards when you break the sockets!

Marty, I have discussed this with Don.  When a PS-1 can not go past the first Reset state, it is related to an ID conflict which is software problem.  That is the problem he has, and because of that no motion.  G

George,  go in your PS-1 notes and look at the FIX and Force chip outline.  The PS-1 boards were strong.  FYI, they are still available new and in stock from MTH.