Help. Kato SD-40 electrical pick up problem!

Discussion in 'HO Scale Model Trains' started by Rusted, Jan 6, 2003.

  1. Rusted

    Rusted Member

    I'm having trouble with a Kato SD40 I just picked up. It is an early release (has the 8 pin DCC socket and yellow diode lights).

    I can't get power to the motor consistently. There seems to be a problem with the copper strips that run from front trucks to rear trucks on one side. At first I thought the spot "welded" copper lead that went up to the circuit board was the problem - it didn't seem like there was a good connection - so I soldered it together.

    That didn't fix the problem - now it seems to work fine with no body shell but when you push down the body shell, you can knock out power to the motor (lights still work, can switch from front to rear lights, etc.). If I fiddle with the side of the engine along its side, I can get it to run for a while, then it quits again.

    The engine is different from my other Katos as the copper strips from the trucks are exposed.

    Anyone had a similar problem? Anyone found a solution or can anyone recommend a solution?
  2. wnanney

    wnanney New Member

    I did not know Kato made a SD40 with pick-ups like that. I have several SD40-2's with those type pick-ups and I have hardwired all of them which eliminated this problem.

    Go to this thread on the Atlas forum and I have posted pictures of how I solved this problem.

    Hope this helps. :D
  3. Rusted

    Rusted Member

    Thanks. I'll give that a try. I knew someone on the gauge would have an answer.
  4. wnanney

    wnanney New Member

    You are welcome!! Hope it works for you.
  5. Rusted

    Rusted Member

    I completed the wiring. Things are running great.

    Learned a few things along they way.

    Here's one: Remove the bottom cover over the gears before removing the side frames. Bet many of you knew that, for those that don't, the bottom cover pushes into holes in the side frames that lock them in place - pry off the side frames and you tear tabs on the bottom cover.
  6. wnanney

    wnanney New Member

    Yep - Go to the Kato website and click on consumers then scroll down on the left side of the page to "SD40-2 truck removal instructions".

    This will help others as I am sure you have already completed yours.

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