Okie Magic works again! I took it apart and checked the DC-in and logic boards for corrosion, burnt parts and such. Nothing. Cleaned VERY thoroughly around the MagSafe connector on the computer. Also scrubbed the pins on the charger side of the MagSafe and ran some alcohol through the spring-loaded pins. One of the pins seemed maybe slightly sticky? During reassembly I saw a slightly oily film near the AirPort card (separate from the logic board). Took off the AirPort card and there was some similar fluid under that on the non-absorbent foam pad on the underside of the card. Cleaned that all up. Got it all back together, fired it up and it worked just fine. I have NO idea what I might have fixed or not fixed. System profile software says battery isn't even to 1,000 cycles yet and is in good condition. Problem solved, no idea exactly why, but can't argue with success. Better to be lucky than good. Thanks all for your help and for being on this forum to help us less talented folks.
I had to deal with this for a friend. What I saw in many threads was that people had to ##&&% A LOT and LOUD and usually Apple would finally agree to fix it. But you have to keep at them. Those who kept complaining reported good success. Good Luck!
Dan, Why do you say it might need a logic board too? *How can one tell if it's just the display or logic board issues too?* Here's a picture of the display issue. https://www.dropbox.com/s/23e5y4ijz440cu...-12-26%20at%2012.41.40%20PM.jpg?dl=0 There are several small cracks in the lower left corner of the screen but the display issues are not right where those cracks are. GREAT help from you! Sorry your arthritis prevents you from fiddling. Thanks all around!