MTH ALCO Number Board Lights Inop

In my experiences sometimes MTH lighting controls can be all over the map.  You'd think that the LMK (Light-marker lights) control would control Number boards but I've often they're tied to the Interior cab light control.  I've also had loco's where the number board lights were tied to the headlight control switch.  Good luck with the troubleshoot.

Try looking for LNB in the soft key list on the remote.

Will try that tomorrow thanks for the thought

Feature reset too.  So these are plugged in to a connector, not mounted to shell via a spring pad?  G

Yes the LED's are mouthed on a post and not on the body shell of the locomotive and shine through the number boards.

I am talking about how it connects to the wiring harness.  Many PS-2 had the bulb plug on to a spring loaded holder on body post.  That connected to a wire pad on the chassis when shell was attached.  They can make intermittent contact.  But if you LEDs plug into a 2 pin molex connecter and you are positive you have continuity from the 40 pin connector to the molex connecter (can have bad solder joint under the heatshrink or a pinched wire).  Then it is either turned off via the board and LNB toggles them on and off, or you do have a bad board circuit.

The ALCO S-2 ithe s the one that does not light either conventional or DCS i have hecked wire from PCB plug to the molex and it shows continuity,  i plugged the number board LED's into the head lamp and they both lit up,  I am going to try the LNB with the remote later for that one and see if it works if not it may be the PCB.

The Sd 70 lights when on conventional so pretty sure the LNBwas toggled off.

Just washable to check both locomotives and toggled the LNB on both and now they are on and working.  Thanks for all the help...