Yup easy fix with the right tools. Is there anyone you know who can do board work? Parts are cheap and once its socketed its easy for you to fix should it ever happen again.
Get nvram installed at the same time , that way you had to take the board out for the work to be done anyways. No worries.
Lesson learnt and safer no battery board.
Another lesson is to change bulbs with the power off too. Heard of people dropping bulbs and frying stuff that way too.
Power off and wait 5 mins at least. good to go.