Recently I switched to LED lighting in my NBA Fastbreak. No problem at all, untill I played the game after I installed the final GI leds. At the moment that a ball enters one of the 'S','H','O','O','T' ramps/lanes all the CPU controlled GI leds are swichted off for about a second.
I performed the T6 General Illumination test, with the following remarkable result: at brightness level 6 the GI leds are switched off. At lower levels the leds are in fact dimmed (with more or less flickering), at level 7 and 8 they shine at maximum power.
I measured the (ac) voltage on the lamps during the test, these are the results: level 1: 3,7V, level 2: 4,4V, level 3: 5,0V, level 4: 5,5V, level 5: between 5,3V en 6,0V (heavy flickering), level 6: 2,8V, level 7: 5,8V, level 8: 5,8 V.
So the problem is that at level 6 the voltage is way too low. And I assume the GI is dimmed to level 6 at the moment a ball enters one of the mentioned ramps/lanes (although I have never noticed this while using incandescent GI lamps).
The workaround is to switch off GI dimming (general adjustment #A.25), but I would like to get this issue solved. I have the manual, I am more or less familiar with reading electrical diagrams, but I could not figure out how the voltage is regulated to the GI.
Any advice?

Ok, thanks for the advice. I am aware that dimming and leds don't work well together. For the time being I will disable the dimming in the settings. As far as I know dimming in NBAFB doesn't play a big role. But still: I think something is wrong with the voltage regulation, the voltage-drop at level 6 would also occur with incandescent lighting. I would be surprised that the voltage drop is caused by the leds. Edit: OK, I was wrong, see my next post.....

I just replaced 1 led in each string with an incandescent bulb, and guess what: the problem is solved. So I assume the dimming circuit has some impedance issue with only led's in the string. I will switch off dimming in the general adjustments. Maybe someone has another solution, or explanation of this issue, just curious.