Reply to Headphone Cue Buttons no longer light up

Hi all,

I have a VCI 100SE that I've been lightly using for almost a year now. Recently, I experienced a problem where the left Headphone Cue button stopped lighting up. And as if on cue, (LOL, forgive the pun!) the right hand side Headphone Cue button also stopped lighting up.

Both Cue buttons still function though, it's just that the lights no longer work.

I was just wondering if any of you have experienced this and what steps were you able to take to fix the situation?

Thanks for any help you can provide!