. Multiple inserts all lighting up with same intensity? Or just one that is bright, and the others are dim? If there all "bright" than we can rule out the ghosting problem..... usually with ghosting, the others will flicker or be dim, but not bright (with LEDS)

I maybe missing something, did this problem exist prior with incandescent? Or dont know? This thread was focused on Ghosting....but it sure doesn't sound like it.

Again, if several are full brightness, I'm going towards a short or board issue. I have not seen LEDs in this game (even ghosting cheap ones), all come on with same brightness.....

Would these happen to be Rotten Dogs? There is an old post where someone had gotten a faulty RD board that was illuminating multiple lights in the switch matrix. It's not unheard of.

The post: https://pinside.com/pinball/forum/topic/taf-lamp-matrix-issue-too-many-inserts-on-at-once#post-3227289

Just keep posting here, and we will work through it. So the old board, may have had issues; hence the swap. Assuming we have some shorted/bad transistors on the main board.