Well, I am heading into the unknown
I need to check and/or replace some of my bingo card
lights(Bikini).
Besides my R. Gerlitz videos and the instructions sheet from Bally,
does anyone have any tips!!!
The two(for now) lamps in question are the 10 and 18 numbers.
I am thinking a bad lamp connection to the socket since they blink
when I move my magic screen positions!!!

Thanks guys
Steve, I can get NOS glass cards. I am not 100% sure if I have a glass card or a plastic card.
It will come down to the ease,or lack of, in removing my existing card.
The instruction from R.G. seems quite straight forward!!

The plugs are clean(ed) and burnished.
I appears to be the socket(s), all though I have not removed the
magic screen yet.
I have some new 17V lamps coming as well as a NOS number card; my card has a
bad scratch on the # 25. I figured that since I am working on lamps I might as well
change the card!!
The sockets are the ones that are hammered in like staples, hate those!!!

Well I checked and cleaned all of my number lites.
None were bad, but a bunch of intermittent ones.
Some notes for any one about to check there stuff.
The biggest reveal to me was the 313 lamps!!
They are 28V jobs and I like the fact that 28V should
last me my life time.
A couple other things, I removed the left AND right general
illumination lite brackets. The instructions say to remove the left one,
but, I found by also removing the right one I could more easily guide the
number card back in proper position!
The guide track locks are held in with a couple of nuts, not mentioned on the
instruction sheet that comes with the Bikini; I guess they figured even some one
like me could figure that out, go figure!!
Holding down the index coil plunger allows you to turn the chain/ sprocket to release the
four sections. Be careful to not snag the sections as they come out.
Also check to make sure that both top and bottom section pins come out of the track(s)!!!
Also when sliding the sections back in make sure not to get one or more of the sharp
edges hung up on wires!
There are two brackets/clips on the right that let the number go back in place properly.
I took pictures if any one is interested.

Guide track lock(s) (resized).JPG

Release nut to move guide track lock (resized).JPG

Four sections removed (resized).JPG

Front with four sections and number card removed (resized).JPG

Left AND right gen illum lite brackets removed (resized).JPG

Left number card bracket released (resized).JPG

Number card going back in (resized).JPG

Number card right bracket (resized).JPG

Right side number card correctly behind the OHER bracket (resized).JPG

Right side on number card correctly behind the bracket (resized).JPG

"KY Bingo", my number card is/was white. I think my lighting on my pictures may give
that blue tint
Doing this again, I think I would go for a NOS glass number card. They are available.
I believe they would look nice and clean and bright!
I cleaned my replacement # card, didn't really have to, it came to me nice and clean!
I was not sure how involved changing the # card was, now I know.
I included a pic of my orig # card.
Terry K
thought I would add a cute pic for free

Old # card 1 (resized).JPG

Old # card 2 (resized).JPG

Old woman (resized).jpeg