check the prints, some of those hall board are for hall lanterns. if it s a duplex, then you will have 2 boards for hall lanterns, one for each car, , and 1 board for the hall calls that the 2 cars share. just determine which one is for hall lanterns, and swap that one with the hall call board. there exactly the same. that way you will have hall calls, and don't worry about lanterns if you get lucky, the bad channel will not be use not the lanterns circuit, and you can continue on if not just have them repaired. fairly simple circuit should not cost to much to fix thats what i would do. that way you will know if the HBI board is bad, or if you have damaged the tone generator board, or the car cpu. good luck
Last edited by Vatorgator; 03/20/17 02:47 AM.