DSO6054A gone wild

[Jwalling]

Does anyone know what the heck this meter-like thing is on a DSO6054A display and how to get rid of it?
I can't seem to clear it off the screen, and it's interfering with the menu buttons. When a menu button is pressed, I get a context sensitive message as expected, but it's instantly cleared so you can't do anything with the scope. It appears to be refreshing hundreds of times per second.

[HighVoltage]

I don't have a 6000 series but it looks like the brightness dial of the 7000 series.
May be the brightness knob is stuck?

[voltsandjolts]

Looks like the display intensity (i.e. digital phosphor)
On my 6034 that hides automatically a few seconds after adjusting intensity.

[Jwalling]

Looks like the display intensity (i.e. digital phosphor)
On my 6034 that hides automatically a few seconds after adjusting intensity.

Sonofagun! 

That was it! The encoder appears to be a bit dicked.

Thanks a lot!