Well...
Now I understand your prediciment. I don't live in FLA either, so I can't check it out, but I don't know much about the monitors anyway. My DL cab is empty. Just a wooden box and coin door.
Do you have a manual by chance? Their may be some troubleshooting guides in there. At least, a schematic.
If you have pics or a website, I'd like to check it out. Is this a restoration project or was the Cabinet already in good shape?