I have a K-Line RS-3 with TMCC & Cruise Control. I have a love/hate relationship with this engine. It was my very first "premier" engine I ever got. I received it while in middle school and it ran conventionally at my local train club. So it holds sentimental value. Unfortunately several years later this engine became plagued with problems. The engine doesn't run well in Cruise control. It likes to crawl then take off like a race car then suddenly crawl again. The horn also likes to blow at random times and sometimes gets stuck on. I have heard these engines had board problems. I never bothered to fix the engine because eventually I aquired more engines and it took a place on my display shelf. Also there's currently no Lionel repair tech I know of in my area. My questions are:
1. Are these symptoms of board failures or something else?
2. Are replacement boards available?
3. Would it be worth the trouble/cost to replace the board?