hello all more follow up on the issue I have and looking for input. I have the tender train sound lionel # 6-36788 it has random sounding and checked the usual things that could cause it but no luck yet. there is a chip on the market # 691ICQT402 it is called “fix it” I wonder if this is compatible to board # 691ISNDGST not heard from lionel support yet
thanks for any input