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Post by marknycfan on Dec 6, 2012 16:43:14 GMT -8
Has anyone tackled this yet? Which decoder, any surgery required?
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Post by bnsf971 on Dec 6, 2012 18:12:24 GMT -8
Has anyone tackled this yet? Which decoder, any surgery required? What scale? |
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Post by marknycfan on Dec 6, 2012 18:15:09 GMT -8
Oh hell I eft out so much....HO scale GP-7 Kato drive from the early 1990's
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Post by bnsf971 on Dec 6, 2012 18:38:23 GMT -8
That is not too hard, though it usually requires hard wiring. I have seen replacement board decoders, but they are almost as much trouble as hardwiring. In fact I just installed one a couple of weeks ago.
Solder the red and black wires to the brass wires that go from end to end on the factory board, unclip the motor leads from those brass wires, solder the motor output wires to the motor leads, and run a piece of electrical tape or kaptan tape at theends of them so they don't touch track powered wires. The engine will now run on DCC. If you want the headlight to be controlled by the decoder, isolate the bulb from those brass wires and solder the bulb leads to the front headlight output wires on the decoder. A Digitrax DH123 will suffice for a decoder, though it is not the only brand or decoder that will work.
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Post by marknycfan on Dec 6, 2012 20:29:15 GMT -8
As long as the DH123 will fit easy enough, I do not want to do a total rebuild
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Post by bnsf971 on Dec 7, 2012 4:37:56 GMT -8
As long as the DH123 will fit easy enough, I do not want to do a total rebuild If you can wait until tonight, I can take a photo of one I installed in a Kato F unit. They are mechanically almost identical. |
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Post by bnsf971 on Dec 8, 2012 7:02:32 GMT -8
The DH123 will fit easily enough, or you can use a Digitrax DN135D. The DN is about a third the size of the DH123, but does the same thing. MSRP is $19.
Wiring colors are the same as the larger decoder, and it fits in a much smaller space. Here is a photo of the easiest way to hard wire either decoder. I have pulled back a little of the electrical tape and removed the decoder itself (I left the wiring) so you have less clutter in the photo:
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Post by bnsf971 on Dec 8, 2012 7:19:24 GMT -8
Trying again:  |
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Post by steveturner on Dec 9, 2012 10:59:44 GMT -8
Your better of with a light board replacement . Cut the light tubes as i beieve there is only one central bulb on existing and configure LEDs for both ends. Make numbers on computer for number board . Way easier removing all the existing board stuff. Pickups to both outer end tabs end of board, LEDs without resistors on each end inner tabs as most light board decoder replacements now have resistors on board. Motor wires to center edgeof board. Steve
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Post by marknycfan on Dec 28, 2012 13:34:15 GMT -8
This is the Atlas/Kato drive MC2H104AT Soundtraxx board replaces the light board in this unit if my info is correct Attachments:
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Post by bnsf971 on Dec 28, 2012 16:06:56 GMT -8
This is the Atlas/Kato drive MC2H104AT Soundtraxx board replaces the light board in this unit if my info is correct That is correct. |
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Post by marknycfan on Jan 13, 2013 16:32:27 GMT -8
I got my board this weekend, should have it running in a week
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