Gallien Krueger GK MB500 Fusion - Making some weird crackling sounds! :s

[Clarky72]

[color=#1D2129][font=helvetica, arial, sans-serif]Has anyone had a weird cracking and/or screeching sound like this from their MB500 fusion at all? Only seems to happen on the presence switch.[/font][/color]
[color=#1D2129][font=helvetica, arial, sans-serif](excuse the playing, trying to hold the phone, play a few notes and flick the switches on the amp at the same time!)[/font][/color]

[url="https://youtu.be/cae8PXjDq50"]http://www.youtube.com/watch?v=cae8PXjDq50[/url]

[media]http://youtu.be/cae8PXjDq50[/media]

Edited May 21, 2016 by Clarky72