This is the D300 that went back for the blinking green light, as described previously: It wasn't a cheap out of warranty repair, but it looks like it got the works: RPL (replace) DC/DC Convertor (s/b "Converter") RPL Main PCB RPL Flash PCB Replace Rubber grip RPL Electrical contacts (...various checks) ADJ hot pixels So other than the rubber grip, and the hot pixels (not many, but just enough to annoy at ISO 1600), which I figured I'd have them map out while I had it there, this thing was an electrical jumbled mess! As I described in my original thread, the problem wasn't terminal (yet, anyway). I could turn the camera off, and the battery wouldn't drain all the way down. But I certainly didn't want to chance through a wedding with this (my 2nd body) camera, and seeing all that got replaced, I'm glad I didn't try. BTW, what is a PCB (P-something Circuit Board, I'm guessing)? I wonder what the "main" PCB is or does.