Comments on: DCC Sound Equipped Class K4 Bachmann 4-6-2 Issues

By: Frank B

Frank B — Thu, 25 Nov 2021 01:47:15 +0000

Take it with you to your local model railroad club. They will normally be delighted to assist.

By: Hervey

Hervey — Wed, 17 Nov 2021 03:55:42 +0000

Phil,
Pray it is something simple such as a disconnected wire. You have power getting to the decoder and it is at least partially working. Check the connections to the motor. Start at the motor with a multi meter if you have power there and no movement or hum then your motor is fried. If you can see that the motor is trying to turn but no movement is possible, check for a mechanical issue impeding the movement. If no power is detected work you way back to the decoder checking every solder or plug joint until you find power. If you find a connection where the power returns you have found your problem. If you find no power at the last connection prior to the decoder your decoder is your problem and needs to be replaced.

By: Bob

Bob — Wed, 17 Nov 2021 03:19:56 +0000

My Dad had a problem with the original Bachmann K4s. We each bought two and in a short time, the spoke wheels bowed outward, effectively locking the drive rods and preventing them from turning. I hope they corrected that issue and you are not experiencing a similar fate.

By: Jerry

Jerry — Wed, 17 Nov 2021 00:32:57 +0000

In reply to Bruce Woods. Perhaps the drive wheel quartering shifted to prevent the wheels from turning. Another thing you can try is in DC mode to apply track wire directly to the motor. If it runs then the module might be badl

By: Bruce Woods

Bruce Woods — Tue, 16 Nov 2021 23:47:37 +0000

You may have a problem with the motor and/or gearing in the loco. If the loco stalled the excess drive it required from the DCC decoder may have caused an internal failure within the DCC chip.
I would strip down the loco and carry out some corrective maintenance