I've no personal experience of this model but best to eliminate the simple...
Are you using it outdoors with good view of sky? I assume the best orientation is straight upright.
How long have you left it for? If you can do a hard reset and leave it somewhere suitable, it might take 15-30 minutes to get its first acquisition. It should be faster after that, but depending how long and how far since last used, 5 mins wouldn't be unusual.
Are you able to find a GPS status page that lists the number of satellites it can see?
Is the battery fully charged? It *may* have some clever feature to turn gps off to save battery when running low.
Assuming its like all the other Lowrance products I have used the user interface and manual will be so poor it will take you a while to work some of that out!
Yes, i'm outdoors with clear skies. Gone onto the sat finder and it's not showing any visible satellites, which it has done previously.
Im guessing the GPS receiver is goosed although I've no idea why as it was working last week.
The radio's battery is fully charged. I've left it outside to try and pick up a signal but after a time, the radio makes an alarm sound and displays that I need to input the long / lat of where I am manually .
Thanks for your time though. I'll ring the supplier next week and speak to them to possibly get a replacement.
Ok, one last thing... Does it have an external socket for a GPS antennae (usually a small 3-4mm gold round thing with a pin in the middle)? My Lowrance held gps has one. It has a rubber cover but if water gets under the cover it shorts out the connector and sees no sats.
That sounds like its a loose connection or short as Poly suggests. If it does have an external port for an antenna a piece of tape over it may be in order.