Yes, I noticed the corrosion. (I just got this xcvr last week!) Give me a break, Allen!
I have taken the interesting battery "holder" apart - cleaned it out. Replaced the LR-44 corroded batteries. Bingo.
Did you notice all the blue/green corrosion comming out one end?
Maybe the batteries need replacing. Think maybe?
Get that thing out and clean all the goop out before the rig is ruined.