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Reply to "Why is a PS2 GP-38 trying to eat my TIU?"

Joe is correct polarity only controls 2 rail.  In 3R the polarity switch does not matter.  I have not see a PS-2 engine kill dcs to the layout though I have seen PS-2 engines that can not see DCS.  Normally it is the Power Supply board, but I have several PS-2 5V like that and one 3V processor that won't read DCS.

Now, a PS-3 engine can work, but have reflective effects on other engines, killing the DCS signal.  So for all your PS-3 diesels, you need to make sure the wiring harness is routed properly over the laid down capacitors to prevent killing DCS signal.  You may have more than one problem here.  You will need to be methodical in isolating.  Right now, too many variables.  Do you have a remote?  I go TIU only and test engines signally to verify entire layout and each engine.  Once your satisfied TIU and layout are good along with individual engines, add one engine at a time and test, until you have a problem.  G

Last edited by GGG

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