This a list of known DCC control equipment that has been found to have problems programming/controlling the MTH Protosound 3 engines/boards.  (Some DCC equipment can have problems programing certain DCC decoders so this is not something isolated to the MTH Protosound 3 boards.) Problem DCC equipment list:  (when trying to program MTH Protosound 3 boards/decoders) Marklin Central Station 2 (aka CS2):   Reported issue with PS3: Has problem programming/changing CV values on some b