I will definitely check the blue connector and clean up anything that looks like it might be corrosion if I see stuff. The case of the DVD has some tell-tale chalky white discoloration on the outside. If it reverts to white (it has been back to happy map mode the last few days), then I will pop it out and clean up the board. I am decent with a soldering iron and have a temp control iron I could use if there are some bad traces.