Fixed income - need to save money, problems were very annoying and needed to be fixed.
Replaced battery, trackpad. and DC input board. Works like a charm
Order spudger and correct screwdrivers along with parts. Work under a bright light, preferably on a large table to lay out all the screws in disassembly groups in order of correct hole pattern. Work slowly and use a magnifying glass and hand held light source to look up close at connectors before disconnecting, read instructions carefully, don't miss a step. Use sticky tape to grab ribbon cable for re-connect. Look at picture frames in reverse sequence for reassembly.