Romahome R20 Hi interior courtesy light

Romacop21

Hello fellow campers!

My interior courtesy light not working Grrrrr!

I put a damp trap in the overhead storage and it must have filled up and spilt over and the leak was coming through my light. I have taken it off and dried it out and still not working. Does anyone know of a quick fix at a reasonable price to do myself? 

Regards.