Chosen Solution
NOTE: The seller included a 45W charger and did not make right on it. I need to get a 60W unit - I know. I’ve had this MacBook for a little bit and it still has thermal problems. At first I tried to repaste it and this did not work - even with a quality paste. The notebook is still shutting down under load on the charger. I don’t believe it’s the power adapter at fault since it appears to run fine (although the notebook says 16.5V/3.65A max) despite being 14.5V/3.1A at most). I may try a knockoff adapter to see if it still overheating as a diagnostic step, but I have ordered a heatsink as a speculative diagnosis. Since it’s so old, my budget for repairing the laptop is 30-40% of the average the value of the 2006 2121 machines, so $30-40 USD ($100 for reference). The reason for this is I can find a 2008-2009 model for about as much as a major part, should the problem be expensive to fix. @mayer here is the CoconutBattery info you want:
@danj here’s the information with the 60W unit:
Aftermarket chargers are mostly awful, they make sparks, may break easily and all the rest, but they charge batteries nevertheless. It seems you have a fried charging circuit here, battery shows good health condition and machine runs..that leaves no room to speculation, it’s not a charger or battery issue. If you think about a replacement you may as well take in consideration the white A1342 macbook, it’s pretty cheap but it’s a state of the art C2D, nice performance and may run high sierra flawlessly. Probably one of the best price/quality ratios for a Mac right now.
Did you have the power adapter plugged in? If you did your charger is not charging at all! I would clean the MagSafe connector on the system and you might need a new one. I often see the plastic has fatigued so the contact pins don’t touch MacBook MagSafe DC-In Board
