Thanks for the reply Stefan.
I finally got the video output working. I had the display resolution on the settings page set to auto before. I had tried a few other likely display resolutions before with no luck and also tried different HDMI cables so gave up.
I tried again different display resolutions and found that when I set to ‘1080p noedid’ I got the display output working fine on my TV with the main Max2play interface. Once the output was set, Kodi installed fine first try. So it seems it was user error I’m afraid, though would have hoped that the ‘Auto resoluton’ option would have worked.