I purchased a Lionel Burlington GP7 Post War Celebration Series #6-18892 (it was used). I took off the shell to replace a light bulb and now the horn and bell don't work. I have tried reseating all of the boards and cables but no luck. The engine does respond to the CAB. It still produces the revving engine sounds. Anyone have an idea which board, connections, or cables I should be looking at?
Thanks for any assistance.