I had a lowrance 520 with a GPS 3000 on my boat and it worked great. I moved the 520 and GPS 3000 to another boat and the GPS would not read. What could be the problem?

Did you re- hook up the nmea pwr wires? From the pwr cord or a pwr node?

Jason,

I made your suggestion to repair the problem , but the GPS still doesn't read. Can you give me another possible solution?

Thanks,

I would back up your wpts and then try a hard reset on your unit..

also take look at this link:

http://www.bassfisher1.zoomshare.com/files/Lowrance/GPS/GPS_Module_Not_Responding.pdf

Another thing to consider is your location. Do you have WAAS required. If so uncheck it.