SMC location on Logicboard

Apple doesn’t offer much info on the error codes. Rarely does the SMC chip its self fail more likely you have issues with its sensor inputs.

I would recommend installed a better tool to see whats happening TG Pro you’ll need the full version to get the diagnostics.

In this case it’s more likely corrosion damage on the back side of the logic board. Follow this guide to pull the logic board out MacBook Pro 15" Retina Display Mitte 2014 Logic Board austauschen so you can make a careful inspection.

Lets make sure I’ve found the correct part on the logic board you should see a board number 820-3787. If that’s the correct board then this is the damaged part Q8010:

So now you’ll need to find someone with the needed tools to remove it and access to a replacement. This is not something I would recommend someone do as a DIY as you need a small nozzle rework station to properly remove it so you don’t damage the logic board and you still need to find the replacement. You also need to check the rest of the circuit as these don’t typically fail so dramatically.

Time to get your system back together so you can get it repaired by someone with the deeper skills and tools it will need.

Your other option is just replacing the logic board:

• MacBook Pro 15" Retina (Mid 2014, Integrated Graphics) 2.2 GHz Logic Board
• MacBook Pro 15" Retina (Mid 2014, Integrated Graphics) 2.5 GHz Logic Board