I Have a hds5 gps in my boat its a seperate unit to the sounder. I have had problems with it the last couple of trips out. The gps keeps losing signal and it doesnt track or tell you where you are.

If i turn it off then turn it back on it picks it back up but only for about 5 mins before losing it again. I have noticed that before it drops out the speed on it goes awol and says we are traveling at rediculous speeds (2000kmph +).

Makes it hard to navigate to spots. And to navigate back home.

I have checked wires to see if it may be a loose cable but it doesnt seem to be.

Has any one experienced this before?