Hello All - and Happy "almost" pool season!

We have a Dynasty Spa (Hot Tub) - Neptune Series and for over a year now the lights been screwy. I cannot change them anymore, stuck on blue, and sometimes they go off by themselves or flicker.

Does anyone have experience on how I can repair those? Can that even be done by a layman or would I need to call a repair service? I hope that this is a lot easier to resolve than I think.

Answers are greatly appreciated!
Happy 2013 Summer to all (waiting for the pollen to stop covering our backyard in green/yellow film...lol)