Just hook up a $1 light and put a light bulb in it. The tube uses 120v at the ballast

PSPA have NOS proper ones. http://pinball.co/Products/29562-a-22980.aspx

but I think the new style LED tape strip lights will be worth considering as well? Easy to steal power from the machine for it.

I bought a LED strip light from my local hardware store. It is 12 inches long and is a complete fixture.
I used double stick tape to attach it. Then connected it the the 120v power, not the ballast.
This was very easy and the old florescent made a loud buzzing sound which I hated.
I dont remember the exact price but this is what it looks like. I am sure it was under $20.
http://www.menards.com/main/lighting-fans/indoor-lights/accent-lights/12-led-strip-light/p-1738991-c-6349.htm
It was so bright that I put a few layers of masking tape over it to tone it down.
Good Luck

I mounted one of these and the lighting was even. I just moved it back more if I remember right. But yea led strip or similar off the shelf lights at your local hw store will work.

Hardware stores are your friend.

Markmon is spot on. Just go get a new ballast and bulb and wire it in. 120V should be very easy to find a variety of options.