JVC GR-366EK Zoom snapshots instead

Question

Hi I have a problem with my 14 month old camcorder when I use the zoom slider on the top it starts taking snapshots instead, the snap shot button works as it should but I'm now unable to zoom in or out.
Resetting the camera works for a few minutes then the problem returns.
I've had a look for firmware updates but theres nothing listed on the JVC website.