Sound works but there is a continuous buzzing noise coming from the speaker. I tried a new speaker with the same result. This particular machine has been modified to remove the BV, printer, hopper, etc. and is running in tournament mode. There is only one speaker located in the bottom of the main door, I do not see any other speakers in the machine, how many did they run with in the S+? Could it be possible that wiring for the other speaker is not terminated and causing the buzz? I have added a very short video with the sound. Any help would be greatly appreciated!