I have a 2006 200 hp Optimax serial #1B378378. Two days ago when I was running I trimmed down and the motor died. I cranked it right back up. Trimmed down and it died again. When I pulled up to the launch, my trim motor made noise but wouldn't move up or down. I tried to crank the motor and my gauges started jumping but no fire. Then, nothing. The Optimax wouldn't do anything and the trim motor would make a low hum. Got home and put my Lithium jumper box on the battery and it fired right up. Trim works perfectly. I expected it to be a dead battery. I went to test the battery and it had 12.3 volts. Where should I be looking? Now I'm confused again. Could the jumper box charged the battery enough where it would read 12.3 but get run down quick? Could it be a short somewhere?