Okay...I have the Line 6 Relay G10 for our guitars...have two...been working great...no issues until last night when I plugged both units in...both came on...got the white glowing light on both. Went to finish setting up and as I was going to check the unit with my guitar I noticed the light was out on one....after a through check of everything found out the unit just went dead. Nothing...other unit is fine....WTH??? Anyone else have this happen? What next?