I have a Lowrance X-135 fish finder. It worked fine for about 3 years and then it started to going blank screen on me. When first turned on, it does fine, after about 1/2 hour of fishing (using trolling motor) the screen goes blank. I have rewired it at the power cable but not the wiring all the way back to the battery. This is installed on a Tracker TX175. I have a separate battery for motor and the accesories. Any ideas anyone ?
