Seems that there is voltage to all of the LEDs (Red pin on Anode and Black pin rotating between Cathodes), to the tune of 5.00 when set to 20V.
A few of the under-cap LEDs aren't on, however when testing I found that the pins were causing the LEDs to light up. I could resolder to get these working, but I somehow doubt that would help the SMD LEDs.
I can't view the traces on the front of the board without desoldering every single switch; is there any possibility that I'd be able to see the issue on the other side of the PCB?