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Reply to "Problem with my PS-3 Engines"

H1000 posted:
apbrinkerhoff posted:

Yeah it's set to 22 V at start up. But the variable channel takes a couple seconds until the voltage is applied.  The fixed channel comes up as soon as i turn my bricks on. 

Okay, I use this exact same setup and have the exact same problem. Here is how to fix (work around) it.

Set the the startup voltage to 21.5. Scroll the power one click from 0 to 21.5 and then scroll one more click to 22. That will get you to max voltage without engines missing the watchdog. I have no Idea why this happens and even asked Jason at MTH about it and it was a bit of a mystery to him as well. I have noticed this behavior on all revisions of the TIU.

I've never heard of this. It is interesting. I use Lionel PH180s to my O scale so they output 18 volts. On my G scale, I run higher but that's DC. I set my packs up to 26 volts smoothly and fairly quick, and don't have any issues. Maybe it's the DC??

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