Dear Ed,
Several things can be tried for one of our switchers that are not
happy. I am sure you checked for the common things like dirty wheels
(half the switcher repairs we get are for either dirty wheels or contact
wiper replacement). You might want to check that the wipers all touch
the back of the wheels and when the wheels are moved from side to side,
the wipers follow and still contact the back of the wheel. One
derailment when the wheels from the same side touch both rails at the
same time will make the wiper lose their temper.
If I had the loco here, I would remove the 4 screws holding the body
to the chassis. Then with the decoder removed, use a VOM and check
that for continuity between the rails and the sockets. Socket 4 should
be left (fireman's side) pick up and socket 8 should be right rail
(engineer). If you do not get a value, check the wipers. You can also
use the VOM to be sure all wheels on the same side have continuity. If
this all checks out, insert the DC shorting plug (the two diodes go
toward the front). When DCC power is applied to the engine, you should
hear a faint buzz coming from the motor. Using the analog "0" address,
see if you get any movement of the engine. If you do, I think it might
be the decoder. Let me know how you make out.
Best regards,
Don
S Helper Service Inc.
www.showcaseline.com
Edward Davis wrote:
> Hi All,
>
> I need some help or advice. My SW-1 ran fine until about a month ago.
> It stopped responding suddenly and doesn't respond to any commands. I
> tried to reprogram the decoder and the response in my DT100 read
> "good". However, the loco won't budge and the lights don't work. It's
> as if it isn't getting any power. All other locos run fine. Any
> suggestions or help will be greatly appreciated.
>
> Ed Davis
> Stockton, Ca
>
> [Non-text portions of this message have been removed]
>
>
[Non-text portions of this message have been removed]
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