Quoted from zacaj:
Without the extra board or special Leds, they will flicker and not stay on, but that's different from ghosting, which is caused by other lamps in the same row/column being on
Been through this with my Bally Star Trek (basically same lamp driver setup), if I can offer some tips.
1) There is no bulb that can fix this aside from incandescent.
2) Your choices are add a 470 ohm resistor to each controlled socket OR get the Altec board with LED support OR solder resistor blocks to your current driver board OR get the add on resistor boards which install over your current driver board and the lamp connections plug into that.
I did resistors to all my sockets which allowed me to repair loose socket connections at the same time. For most people I don't recommend that option.
3) GI bulbs that stay always on need nothing, add LED as you see fit. Great way to lower amp load on the GI circuit connections. On my Trek the connectors and pins were toasty brown.
Running an LED in a MPU controlled non-resistor socket gets you an irritating erratic flashing that would set off an epileptic fit. Its that bad.
Adding the LED's was well worth it in my opinion. All the insets are now evenly lit and look crisp.