Old Chicago is my absolute favorite em! Clearcoat that playfield and unwind the coils for the lower pops a bit and it totally kicks a$$. Might be the only game I never let go.

It’s been years since I removed some layers, so I can’t remember how many I did. I’ve been thinking I might unwind them a bit more. I think you can be fairly aggressive with it on this game.

Simply remove the coil from the game. Remove the paper wrapper (carefully so you can reuse it). Figure out which wire end is the end that would unwind from the outside of the spool. Cut it off the lug and unwind it some. You are reducing the number of turns around the coil to increase the power of the coil. Again, I can’t remember how many turns I did. I tend to count turns rather than layers so that I have some reference for how much I’ve done relative to the original setup. If I ever do this again in an unaltered coil, I will write the number of turns removed on the wrapper when I’m finished.

After unwinding, gently sand the coating off the end of the wire and solder it back on the lug. Replace the wrapper and reinstall the coil in the game.

OC, the true OG. 95% repainted and clearcoated for sexy high speed glory.

(The spinner is borrowed from my Space Mission parts stash after the original gave up the ghost. I’ve got plans for a custom image on it down the road.)

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Nice - looks like it hasn’t seen a ton of action over the years. Hard to tell from your picture but I don’t see the telltale ball trail groove worn in the arch that typically comes with heavily played titles from the 70s. Looks like you scored a good one.

Ha! So it had a slight trail. Cleaned up nicely!

Maybe try a flex head green led?

Like this:

https://www.cometpinball.com/products/1smd-flex?_pos=1&_sid=1ce0c330d&_ss=r

They make other styles with different legs of flex, quantity of light heads, etc. This link is for the basic single led, short flex lead.