So Friday morning I headed out to the water for a relaxing day of smashing bass. Drop the boat in, fire up.the 4 Helix’s and my gen 4 12 up front is locked on the initial screen. Had to unplug it to get it to turn off. Switched the plugs to see if that was the issue,nope. Tried different start up procedures, which got it fired up for about 4 minutes the screen lock again. Tried switching the plugs again to no avail and a black screen for my troubleshooting! Mind you it is only 2-3 months out of warranty. Which is evidently a bridge to far for Humminbird to cross. I guess bad pr is going Meet the upset angler and cost a lot more than that $350 I gotta pay