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Sunday
Jul012007

Short in Pasco Power zone - No Ops session

About a week ago, an occasional gremlin short in Pasco power zone became a full blown gremlin!! I have spent several hours tracking it down and have eliminated most of the easy ones. Still not working. I canceled the June 30 op session...sigh...

I am pretty sure it lives in the common rail wiring. Next week I will begin to disconnect all the leads and rebuild the bus.

My plan will be to add another (3rd) Digitrax PM42 power zone circuit board and subdivide Pasco zone into 4 Zones thus further dividing power zones:

Reversing PM 42:

  • Short detection for reversing sections
  • Biggs OS to Troutdale OS
  • Balloon Track in Portland
  • Open

Second PM42 will have
  • Portland Yard including Eugene
  • Seattle Yard
  • West Half of Main
  • La Grande and Spokane Yard Staging

New PM42
  • Pasco yard
  • West Pasco and Walla Walla
  • East half of Mainline around Pasco
  • Aberdeen and Helix

then re-attach leads to separate bus wires. Hope that does it.
I have spare PM 42 and am ordering more TAP 3M connectors from Mouser.
Hope to start work this week.

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