Lava is "buzzing" or making some other sound when powered "ON".
Ā
Verify that the mounting bolts are fully tightened on the rail.
If not: Ā Tighten them until snug.
If bolts are tight: Ā Look behind the LAVA and check to see if the rail is touching the rear of the enclosure. Ā If it is, that is the cause of the sound.
Solution: Take some felt, and attach it in between the rail and enclosure. Ā Units received from Etherma during 2013 will be shipped with felt on the mounting rails.