Grundig VS-C 35 video camera
 

Anyone have experience of a Grundig VS-C 35 video camera?

I have just managed to salvage one and it’s all in working condition
except the zoom doesn’t work. I can hear the servos are working but then
there is a clicking noise. Does anyone know how to safely dismantle the
camera and have some advice what might be wrong and how to fix it? Thanks.