I have a MTH steam locomotive that I recently upgraded to Proto 3.0 and am having an issue with the smoke feature.
The engine and Proto 3.0 upgrade have operated flawlessly for approx. 32 hrs. of run time. It was operating fine one day and when activated the next day the smoke feature no longer worked from startup. The smoke unit heating element is operating (it is heats up when smoke is activated) but the fan is not. I have done the following troubleshooting:
- Checked continuity of all wiring from the Proto board to the smoke unit fan and all is OK.
- Checked fan motor with 1.5 volt battery and it operates
- Measure voltage from Proto 3.0 board at the connections to the fan motor and it is.4 volts constant when the smoke feature is on. It does not pulse whit chuffing.
- All other functions, including operation of locomotive drive motor, sound, lights, etc. are working as expected.
Seems like it might be an issue with the Proto board.
Anyone have any ideas other short of complete board replacement?