Sony KV-27XBR55 PIP won't shut off!!!

I have a Sony XBR 27" tv, don't have the original remote, instead have a RM-V60 Sony replacement, which Does Not have a PIP button. Somehow my 7 yr old managed to get the PIP turned on Large size in the lower right hand are of the screen. After trying to figure out what he did, I gave up & grabbed a RCA 8 device remote--RCU800, which had a PIP button. Out of the five settings suggested, only three worked, but with varying results. None of them allowed the PIP to be turned off, but the second setting 205, allowed the PIP screen to shrink...but only when you hit the SELECT button...go figure. Hard reset has no effect. I have NO idea what to do next. HELP!!!!!