I have a Motor guide tm that is not working part of the time. I think it is the switch on the foot petal. If you think that is what it is are they hard to replace?<br /><br />Also I have a hummingbird 200 depth finder that has not shown a fish in two years. It is fine for showing depth and structure but will not show any fish. I have the aftermarket puck transducer mounted on the the trolling motor. The temp probe also quit. Any ideas?<br /><br />thanks<br />longshot