BMPCC OG + H-PS14042 Lumix G Lens

After some advice...
Just bought a second hand BMPCC on eBay and separately bought a Panasonic H-PS14042 Pancake zoom with rockers for zoom and focus. BMPCC is running Firmware 2.1 - no idea what the lens firmware is as I don't have any other M43 cameras.
When I power up the camera with the lens attached I hear the lens do something but it doesn't extend nor do the zoom and focus rockers do anything. When I power the camera down I hear the lens do something. I have tried switching the camera on and off with the two rockers held in the W, T, N and F variations and on one occasion the lens extended and then retracted.
Anyone got any advice?
I'm going to see if I can clean the contacts with IsoPropyl alcohol in case they are at issue - though they look clean on both camera and lens.
I've seen some reference to powering the camera down with the lens removal button pressed down - but that didn't seem to change much.
Just bought a second hand BMPCC on eBay and separately bought a Panasonic H-PS14042 Pancake zoom with rockers for zoom and focus. BMPCC is running Firmware 2.1 - no idea what the lens firmware is as I don't have any other M43 cameras.
When I power up the camera with the lens attached I hear the lens do something but it doesn't extend nor do the zoom and focus rockers do anything. When I power the camera down I hear the lens do something. I have tried switching the camera on and off with the two rockers held in the W, T, N and F variations and on one occasion the lens extended and then retracted.
Anyone got any advice?
I'm going to see if I can clean the contacts with IsoPropyl alcohol in case they are at issue - though they look clean on both camera and lens.
I've seen some reference to powering the camera down with the lens removal button pressed down - but that didn't seem to change much.