I picked up an X's & O's at a local auction. It's been in a basement for many years. The machine is in good condition but the playfield needs a good cleaning. I'm considering converting to LED's primarily because of heat. The tic tac toe part of the playfield has a plastic grid with 27 bulbs in it. My grid is still OK after years of bulbs running in it but I don't think it needs any more heat and I'm sure a replacement would be hard to find.
What LED bulbs would be best for general playfield lighting for this machine?