Hi folks. I have a Kenwood DNX9190DABS in-dash Satnav unit, and five or six months ago it started behaving oddly: on startup, it has no trouble finding satellites and gives the message “ready to navigate”. It’s quite happy until, at some point - sometimes after just a few minutes’ driving, depending on route - the display goes nuts. It begins by switching to a zoomed-out view, although not of the place I’m at, before ‘pulsing’ or ‘shimmying’ between zoomed-out and zoomed-in views. Sometimes the whole image rotates. Then it kind of settles into a single zoomed-right-out view (sometimes it’s the whole country!). It doesn’t respond to me trying to use the + or - touch buttons, nor me trying to use my fingers to zoom the image back in. Neither will it respond to the back arrow command to return to a previous screen. The only thing that works is to turn it off, wait a bit, then turn it back on, but at some point it will just do all this again. I’m running the latest firmware and just updated the maps; made no difference. I’ve restored the unit settings a few times but the fault persists. I know nothing about gps, but it does seem to be losing the satellites. I’ve pulled the unit from the dash, and all the cables, including antenna, are tight. Can anyone explain this, and what I need to do to fix it? Any help much appreciated… cheers.