i have this Magellan exploring 610 and realized the batteries were badly corroded the device. I used white vinegar and q tips and cleaned much of it out, however, I broke the battery tab on one side. It won't work even with the tab in place, and I don't know much about this anyway, but how can I repair this and where would I find parts? It may not power on for other reasons, like the corrosion deeper in inside it? But I think I'd have a lot of disassembling to get all that out. It's only been used a couple times, sad that I left batteries in there and ruined it!! Thanks!!