OK...so for last couple months I haven't been having much luck with equipment, a couple months back my G major quit working on me, so I have just been using my RM100C straight up without effects while it was getting fixed. Anyways I got it back last week and was in the process of setting it back up last night, when I noticed that no sound was coming out of the amp when I unhook the send and returns from the amp. Plug them back in and the amp works fine....unplug and nothing! I don't understand...because the amp was working fine by itself prior hooking the G major back up and now it won't work without the G Major plugged in. Please let me know if you have any suggestions. Thanks Bryan