My wife gave me a used Legacy GP-7 Santa Fe engine (6-28598) for Christmas (I know, how thoughtful!) and it runs great but the sound won't make a peep. I've tried it under Legacy (v1.0) control, TMCC control, and conventional control to no avail. Under Legacy control I've changed it's address number several times, done a reprogram/reset using both the AUX1 code 2 and AUX PROG code 2, increased volume, decreased volume, etc. I've adjusted the potentiometer internal to the engine to several different positions and still no sound. I took the shell off the engine to look for any obvious problems and found a loose connector and what I thought could be a shorting wire on the railsounds switch, but fixing these didn't fix the sound. Also tried to clean up excess smoke fluid the best I could but that didn't change anything.
From other posts I've read I'm concluding that the sound board has failed and I'll need to get a new one, but I wanted to make sure there's nothing else to try or tests to isolate the problem. I don't have another working sound board to try in this engine. I'm pretty sure the speaker is getting power as I hear the familiar railsounds hum when I dial up the track power, and I also hear the speaker hum change when I adjust the potentiometer with track power applied at 18V. Any suggestions? As I mentioned earlier everything else works fine including the startup button, adjusting smoke volume, engine reset, engine stop, speed buttons, etc. Just no sound for either horn/bell or any of the sound related keys.
