I've also just recently started having lighting issues on my Pre.

My center board is doing almost the same thing. Does not light up at power on, but after a couple minutes of play, the lights come on but not at full brightness. Power issue perhaps? Anyone else encounter this? I'm hoping there's a solution that isn't buying new boards. Marco has some of them in stock, but they start at about $60
https://www.marcospecialties.com/pinball-parts/GX3025?S_CAT1=ELEC

The green in my left lock is out as well. Found a thread on that:
https://pinside.com/pinball/forum/topic/stle-help-rgb-inserts#post-2895427
Going to order a couple of these to try and fix and have a couple spares.
https://www.mouser.com/ProductDetail/?qs=6jQbvwb2v93SrlJnkMtIwQ%3d%3d

hmm, i think someone dealt with this over in the star trek owners club thread at one point, may want to reach out there:

https://pinside.com/pinball/forum/topic/star-trek-clubmembers-only/page/142#post-4615870

That link is to the post I just made over there

yeah i already made the post then put in the link and saw you posted over there, but atleast now the op will get over to that thread.