So...I power up my rig and my Boss GX-700 display is FUBAR. It's showing a row of boxes and a blank row beneath...no characters at all. Luckily, I have another unit, and I figure I can just cannibalize that display for my main unit.
So...I try to take my rack apart and remove the GX-700. I find that I have a stripped rack screw that i have to drill out, but I have spares. Drilling commences, the screw drops out, and I can now remove that clip. I get the unit out, take the screws from the cover (quite a few of these BTW), and look inside. It looks pretty clean in there, nothing out of place.
I make sure all the ribbon cables are plugged into the display screen and I power up the unit to see if the display is still broken....NOPE. It's fine.
So, I put the whole shebang back together and figure out I have my cables connected wrong again
but get it sorted out.
An hour later, my rig is back to where it was before I started....except now the display is magically working and I have a bunch of tools to put away