Hi!

I got a bunch of turnout motors sent to me from a guy in Sweden, saying they fail in one direction.
His system is digital and uses K83 and m83 decoders. He found out that the problem is overcome by operating the motors a few time by hand and/or on AC. After some time the problem comes back though.

I have made investigations, read a number of different posts in various forums and found that the Micro switches inside the motor is the problem.
This problem and the solution to bypass the switches seems to be well known. I anyway felt the need to make a short video tutorial describing the problem and the solution/fix.

Thank you Martin - again!

Ironic that I wrote on this forum last week I was having the very same problem which then developed into a simple problem with a Viessmann 5211 which was fixed by Fabrice reminding me of the operating procedure! I thought by a good few jolts directly through the trafo outlets I had solved my problem but then it came back again just last night. Now your tutorial has solved my problem again very timely!

If I had the video camera handy I could have made you all my tutorial on "How NOT to solder when your older"

I am in the process of bridging the limit switches on my new 75491's and must decide whether or not to remove the switches.

It seems removing the switches gives greater power (helpful if using turnout lanterns and underboard kits) but makes them a bit noisier.

I bridged one each way, just depends whether the motors need that extra oomph or not I guess - I don't think the extra noise will be noticeable.

Hi Peter and thanks for the reply.

That was something else of concern though I did not mention it because when I tested it seemed the switch held in place OK.

After hearing of your experience though I will play it safe and leave them in!