Must be a wiring issue. There shouldn't be any surprizes in converting to LEDs. I converted a few locos including Athearns. However, could also be a programming issue, because using LED required changing some CVs.
I usually create a wiring diagram which I follow for physical wiring. And a list of CVs which I change from defaults. Its easier to troubleshoot when you have a visual reference.
Its a bit more work, yes. But in the end I find this is the fastest way to find a problem.
Good luck!
Very strange, but that COULD possibly happen if there is a diode or LED in series with the motor - current would only get to the motor in one direction. But that would require a really major goof in the wiring, since there would be no reason to touch the motor wires when changing the lights for LEDs.
Would be obvious, too - is there a new LED light that only comes on if the loco moves forward?
--Randy
Modeling the Reading Railroad in the 1950's
Visit my web site at www.readingeastpenn.com for construction updates, DCC Info, and more.
Mac49I just replaced the bulbs with LEDs. it now runs fine going forward, but will not move in reverse.
If it ran well before, that would be a very odd failure mode for the decoder. I'd look for something mechanical.
Henry
COB Potomac & Northern
Shenandoah Valley
How much throttle do you give it? If just a little, say as much to get it moving forward, you may have worn gears that require a bit more V-Start. I don't really think this could be the case, but I ask in the event that you have only given it two or three speeds steps and it still doesn't move.
Does the sound system work in reverse? How about the lights?
I have a BLI Hudson with a similar problem. It would run in reverse, but running in forward was at best hesitant, at worst non-existent.
I took it apart, and found the gear coming out of its motor was slipping on its shaft. A drop of CA fixed it.
It takes an iron man to play with a toy iron horse.
This is an Athearn Genesis locomotive with a Tsunami2 replacement decoder. I just replaced the bulbs with LEDs. it now runs fine going forward, but will not move in reverse. i have reset the decoder to no avail. Anyone have any ideas?