Hi,my name is Ki Man.I just bought a Boss ME 70 two days ago. However,when i use it today,it shows a strange signal on the display board during changing patches suddenly.Here is the photo. http://fapomatic.com/0932/dsc00453.jpg Then,I did not care about it and still played.But a minute later it turned off automatically and turned on.Is it damaged already?I just bought it two days ago.Please help.
Are you running your ME-70 from batteries? Or the OPTIONAL power adapter?
The ( bt ) message on your display is most likely a low battery warning --- (bt as in check battery).
While I don't own an ME-70 I believe the rated Spec. for battery life with, a "New set of Alkaline batteries", is approx 10-12 hours.
I have the larger GT-x mFX pedals, but they don't use batteries, just a dedicated power adapter.
If it's New & you are Defiantly running it off the optional adapter. Then perhaps you should consider taking it back to the store where you purchased it from.