Danim Posted December 26, 2014 Share Posted December 26, 2014 Hey guys I am having a bit of an issue with my DCC pendolino where all the cv codes are reading 255 even when I try resetting the chip Any help would be greatly appreciated Link to post Share on other sites More sharing options...
smokebox Posted December 26, 2014 Share Posted December 26, 2014 255 often means the decoder isn't being seen by the programmer. Are the wheels clean and the track clean? Are you certain the model has a decoder installed? If you are trying to read CVs from the dummy car you won't usually be able to as the decoder needs to have a load connected to the motor output of the decoder. In the powered car the load is provided by the motor itself. Link to post Share on other sites More sharing options...
soony Posted December 26, 2014 Share Posted December 26, 2014 A CV reading of 255 means it isn't reading anything. There is no connection between the controller and chip ( most likely) or a faulty chip/controller ( least likely ). If the pendo is on the track , short circuit the rails temporarily ( with a coin etc) and if the controller indicates a short circuit , the fault is in the pendo or pickups/ wiring etc. If there is no indication of a short circuit , its in the controller or wiring to track. Get yourself a metre of track and temporarily wire it to the controller with pendo placed on it, does it work now? Link to post Share on other sites More sharing options...
Danim Posted December 26, 2014 Author Share Posted December 26, 2014 I have it on a short section and tried it with the pendo and with a serco 08 and the 08 was working on the same section of track Link to post Share on other sites More sharing options...
soony Posted December 26, 2014 Share Posted December 26, 2014 Check the wiring inside the pendo , particularly see that the motor is connected. If there is nothing obvious , remove the plug/chip and replace with blanking plug, then check it works on DC ( A 9V battery is useful , if you dont have a controller)- try another chip if it works on DC Link to post Share on other sites More sharing options...
Danim Posted December 26, 2014 Author Share Posted December 26, 2014 unfortunatly I don't have a blanking plate for the pendo, I placed a bit of metal between the rails and the railmaster software detected it as a short Link to post Share on other sites More sharing options...
soony Posted December 26, 2014 Share Posted December 26, 2014 Well , You're into the realms of swopping the chip with another ( should 8 pin type ) or doing a thorough check of the wiring inside the power car. There are edge wiring connectors, bits of plastic that hold wires in holes along the edge of the PCB, that would be next suggestion to check, or take it to a model club or local shop.... Link to post Share on other sites More sharing options...
Danim Posted December 30, 2014 Author Share Posted December 30, 2014 Found the problem it was a loose wire from the PCB to the front bogie Link to post Share on other sites More sharing options...
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