AKAI PTH5498 "Signal : *******" Notification

I've experienced the "convergence" issue as well, but hopefully that is behind me, along with the $600 repair bill.  The problem now is an annoyance....When the signal changes from "MONO" to "STEREO" to whatever, I get this very annoying notice on the screen that say "SIGNAL: MONO", "SIGNAL:STEREO", etc. Some channels change signals very frequently, especially ESPN. Sure would like to get rid of the notice. Anybody with a solution (other than "A big hammer"........Thanks