I have a yamaha 2005 HPDI and recently the engine would not start after running out to the fishing grounds with no problem. When trying to start after approx hour off No power at all at controls. Nothing when turning key or power tilt at control and also had no power at engine itself to tilt engine. After 45 minutes power at controls and boat started no problem. Ran 1 hour back with no problem and as soon as I tried tilting the engine due to low water engine immediately died and then again no power at controls. It seems extra electrical load when attempting to tilt engine killed everything. Where do I start?