Hello everybody, This question is for anyone who has done this procedure. I would like your opinion, experience, advice. I have an MTH SD90 that that I want to convert to TMCC. I see the TMCC boards on Ebay. I have never really "dived into" the inner workings of train engines. I want to know if it is EASY to replace the board. Are the instructions easy to understand? Anything I should be wary of? I am somewhat familiar with computer chips etc... I have experience soldering. I have some electrical knowledge. Thank you.
