2008 150 EFI Merc lost electrical power

[gmst2]

Went to go for a run today, got about 150 metres from the dock and the motor shut down.
No electrical power at all. Even the tilt/trim doesn't work.
Changed the battery, still nothing. Checked the fuses and all 4 seemed okay.
Any ideas???

[Riptide]

Ignition switch?
Try pulling the kill switch retainer clip and reinstall.
Just have to start checking feeds from the beginning and work your way through with your meter.
You state the trim doesn't work, does this statement include the trim switch on the throttle and the engine as well?

[gmst2]

Yep no trim at all.
Checked the kill switch and all the feeds.
Could it be the solinoid?