First off, could somebody define GI lights? I searched and think i'm seeing "General Ilumination". Just need a confirmation or correction.

I'm working on my Fireball Classic, and have used some new LED lights behind the backglass, and in a few spots on the PF. I'd call these areas "GI" if my guess is correct.

Heres what I'm seeing though. If I use the lights in a Pop Bumper that only lights up if certain PF goals are met (like the rollover switch wire), or if i use them for the bonus numbers, 5, 10, 20, 30 etc up to 100 and 150 They are plenty bright, but they flicker like mad. Very annoying. All the regular incandescent filiment type bulbs just burn a steady state, but all the "feature" lights flicker.

Like I said the general lighting is fine, but the bonus, and special sockets cause the same brand of light to blink.

Any thoughts? Thanks for your help everyone.
Andy

This sounds easy enough. Is 470 Ohms the magic number for any particular reason? I think for the money, I can solder in a few resistors fairly quickly. I like the lower cost option. I've been getting boarded out lately... lots of problems with the older Bally boards, and the "easy button" is to buy nice Alltek replacements.. but I've been bottom feeding a bit, and it seems every game needs at a minimum of one, and sometimes three boards.

Does it hurt if you had the resistor on the Incandescent socket, or do you have to install and remove resistors every time you switch bulb styles?

This has the 555 style lamps, but it looks like they are rated for the same amp draw about .25Amps at the 6.3 volts. Should also be ok.

Thanks for the tips.

Ok after mulling it over, I broke down and put the new ALLTEK lamp driver in that I had set aside for Strikes And Spares. It required a short grounding cable be attached to the thick braided wire on a Tilt or Ball in play wire. I soldered it in lightly, and the flicker......is gone.
Looks like the problem is solved. I will save the other board for Strikes and Spares I guess.

Thanks for the tips everyone.