I recently purchased a new Sound Value Alco S4 on a popular auction site.The only sound the loco makes is the prime mover at idle. The loco does not move forward or back and none of the sounds respond to commands. No bell, horn, or lights. I have tried readdressing it from 3 to the cab number and back again. I have tried resetting CV8 and adjusting several other CVs with no success. My system is an NCE Power Cab. Any advice or ideas to get this thing running would be appreciated. Thanks.