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Lights that light up in the opposite direction of travel
 Joined: 02/11/2021(UTC) Posts: 12 Location: Hyogo, Takarazuka
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Hello I recently got a 36420 BR. It works perfectly and the lights are on in the direction of travel, but there is no sound. So I replaced the decoder board with 60948 and attached the attached 21pin decoder. I got the sound, but the light turns on in the opposite direction of travel. So I downloaded M26606_RB232.mdtp from the Märklin server to 60977 on pin 21 using the Decoder Programmer, input it to the decoder and attached it to the locomotive, but the light still turns on in the opposite direction of travel. The motor of this locomotive is soldered directly to the decoder board and cannot be installed in reverse. Also, the cord of the Light unit cannot be installed in reverse.  When I looked at the function of Decoder Tool3, I thought that it would be possible to return the rotation direction of Lights or the motor by setting the decoder, and AND1 (FrontLight) and AND2 (RearLight) were both "Both". I set FrontLight to "Reverse" and RearLight to "Forward", but this time the Light does not light in both directions. Even if "Reverse" and "Forward" are reversed, Lights will not light up either.  There is also an item called "Direction Revarsal" in the Motor section, but checking this is meaningless as the light and motor rotation directions change at the same time.  Is it possible to reverse Flont Light and Rear Light in the decoder settings?
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 Joined: 10/02/2021(UTC) Posts: 3,902 Location: Michigan, Troy
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Can you reverse the mounting of the body?
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Joined: 02/11/2021(UTC) Posts: 12 Location: Hyogo, Takarazuka
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Originally Posted by: marklinist5999  Can you reverse the mounting of the body? Thank you for your advice. I also thought about mounting it in the opposite direction, but I had to install the motor according to the recess for the flywheel of the motor, and since the decoder board is directly attached to the motor, it can not be mounted in the opposite direction. If the problem cannot be solved by setting the decoder, there is no choice but to stop the direct attachment of the motor and connect the motor and the board with a cable.
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 Joined: 28/11/2007(UTC) Posts: 8,230 Location: Montreal, QC
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You stated that you replaced the Circuit board. My guess is that the problem is not related to the lights, but rather the leads from the circuit board to the motor have been inverted, causing the locomotive to move in the opposite direction from the one selected.
Regards
Mike C
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 1 user liked this useful post by mike c
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Joined: 30/01/2006(UTC) Posts: 1,893 Location: Keene, NH
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3 users liked this useful post by mmervine
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Joined: 02/11/2021(UTC) Posts: 12 Location: Hyogo, Takarazuka
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Originally Posted by: mike c You stated that you replaced the Circuit board. My guess is that the problem is not related to the lights, but rather the leads from the circuit board to the motor have been inverted, causing the locomotive to move in the opposite direction from the one selected.
Regards
Mike C Thank you for your advice. The motor and board are not connected by lead wires, but the specifications are such that the terminals of the motor and the solder points of the board are directly soldered.
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Joined: 02/11/2021(UTC) Posts: 12 Location: Hyogo, Takarazuka
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Originally Posted by: mmervine Thank you for your advice. I changed the jumper immediately and tried it. oh! Great! The direction of travel and the direction of lighting of the light match. Now I can fully enjoy driving and sound. I have to read the manual carefully. thank you very much. The photo is the jumper after the change. 
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1 user liked this useful post by maruju
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 Joined: 17/09/2006(UTC) Posts: 18,771 Location: New Zealand
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Originally Posted by: mmervine See page 31 of the below instructions. It appears your problem can be corrected by changing the jumpers on the board. Correct, I found this out the hard way with my Ludmilla loco! Other decoders allow you to reverse the lights by setting a particular CV on the decoder. I was wondering why doing that didn't work. After faffing around with it for a while, a lightbulb moment suggested there might be a jumper for this, and there was!
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Lights that light up in the opposite direction of travel
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