I have a F3 6-14513 The headlight works just fine in conventional however it does not work in TMCC. I have tried AUX2 several times and I have tried a reset/restore with no success. Locomotive has a LCRU.
Steve
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Any ideas on how to fix this?
I'd send a request to Lionel and see if they can help.
Just a long shot. Was the engine ever set up in a train as in a lash up? Had a similar problem with a engine and I had to clear the lashup to get the headlight to work right. Stranger thing have happened.
Even if so, normally if you address the engine by it's ID it responds appropriately.
This is a new twist. I would ask Lionel also. The headlight is powered off a small triac. If it is working in conventional, the triac must be good, so why the R2LC board doesn't send the correct signal in TMCC is unknown.
This is a new twist. I would ask Lionel also. The headlight is powered off a small triac. If it is working in conventional, the triac must be good, so why the R2LC board doesn't send the correct signal in TMCC is unknown.
I don't know if the locomotive was ever in a CONsist, however it seems to respond to TMCC as it should, bell, horn, direction, speed etc. This is older TMCC so it has a LCRU not a R2LC.
I will send this question to Lionel.
Steve
I will send this question to Lionel.
Steve
Is is a LCRU-2?
It the headlight a LED.
Did it ever work correctly?
Carl
It the headlight a LED.
Did it ever work correctly?
Carl
Carl,
The board is a LCRU2 revision C. The processor (U2) has a label L2RU01 097. I have no idea if it ever worked correctly, the locomotive is on its 3rd known owner.
Steve
The board is a LCRU2 revision C. The processor (U2) has a label L2RU01 097. I have no idea if it ever worked correctly, the locomotive is on its 3rd known owner.
Steve
Heve you tried Aux2 while in reverse?
Carl,
I just tried that, no change.
Steve
I just tried that, no change.
Steve
Steve,
Try reversing the LED leads.
Try reversing the LED leads.
Why would reversing leads work, if it works in conventional but not in Command? G
There is something on some of the R2LC boards that in certain modes the polarity of the lighting outputs is reversed. Don't ask me where I read that, but apparently there's a way to flip them to run bi-color markers. 
I had heard that too, but this is an LCRU2 unit not R2LC. The output is still AC I thought, even though there may be DC offset available.
The issue also is if you reverse leads and now it does work in Command, does that mean it won't work in Conventional (if the LCRU2/R2LC swap polarity of a DC offset when in command mode).
Really need an explanation from Jon, of what the output of the lighting circuit consist of. I also thought early F3 had normal bulbs. G
The issue also is if you reverse leads and now it does work in Command, does that mean it won't work in Conventional (if the LCRU2/R2LC swap polarity of a DC offset when in command mode).
Really need an explanation from Jon, of what the output of the lighting circuit consist of. I also thought early F3 had normal bulbs. G
GGG, Folks,
I believe the output on the lights is 1/2 of the AC wave on TMCC, and full AC wave in Conv mode. If the LED is reversed with respect to the TMCC 1/2 wave polarity, it may not work; yet in conv mode where the full AC wave is delivered, it will.
The reason for this behavior(with lamps), is on TMCC voltages of 18v, you want to keep the 14-16 lamp from burning out by going to 1/2 the AC wave; and in conv mode, where the track voltage is lower to produce motion, you need the full ac wave to brighten the lamp.
Worth a try.
I believe the output on the lights is 1/2 of the AC wave on TMCC, and full AC wave in Conv mode. If the LED is reversed with respect to the TMCC 1/2 wave polarity, it may not work; yet in conv mode where the full AC wave is delivered, it will.
The reason for this behavior(with lamps), is on TMCC voltages of 18v, you want to keep the 14-16 lamp from burning out by going to 1/2 the AC wave; and in conv mode, where the track voltage is lower to produce motion, you need the full ac wave to brighten the lamp.
Worth a try.
There you go, from the horses' mouth. 
Jon, Thank you. These are the detailed post we need to have pinned as a reference when the new board goes on line.
Always good to know why it works that way! G
Always good to know why it works that way! G
So now the second part to the question is: does the half wave flip at each cycle of the direction button or Aux2 button when in TMCC. In line with Carl's post. G
quote:Originally posted by SantaFeFan:
GGG, Folks,
I believe the output on the lights is 1/2 of the AC wave on TMCC, and full AC wave in Conv mode. If the LED is reversed with respect to the TMCC 1/2 wave polarity, it may not work; yet in conv mode where the full AC wave is delivered, it will.
The reason for this behavior(with lamps), is on TMCC voltages of 18v, you want to keep the 14-16 lamp from burning out by going to 1/2 the AC wave; and in conv mode, where the track voltage is lower to produce motion, you need the full ac wave to brighten the lamp.
Worth a try.
Speaking of that, I have a Lionel cantilever signal which burned up the GO (green) light and did a number on the light shield (unavailable). I managed to clean it up though. I reduced the 18vac to half wave with a 47 ohm resistor in series. On a Fluke true RMS, it measures 6.5 vac. Even half wave or a resistor to 9 vac was really too much and seemed to wash out the green dye.
Usually with the leads reversed, you will get a single flash when track power is first applied. I've noticed this only with leds. Did you use code 6 as the reset code.
Bill
Bill
Jon,
That did the trick. Thanks!
Steve
That did the trick.
Thanks!Steve
