Tilt and trim wont trim up taking off works fine running down the lake

SOURCE: Volvo-penta aq271c, trim will go down, but not up.no pwr at relay

First check the switch-- does it have power, then check the solenoid to see if it works-- there are two. One is for down, One is for up. If you get power from the solenoid-- outgoing-- check connections going to pump motor.

SOURCE: my 1978 140 evinrude electric trim tilt motor

First make sure you are not in transit mode. Some outboards have a lever which keeps the motor tilted for trailering. You should have a fuse for the tilt motor, check that. If the pump is turning and it sounds like it is whining you are pushing air and either lost your hydraulic fluid or have an air bubble in the system. Check your fluid reservoir.

SOURCE: tilt-trim not tilting down after being tilted all the way up

check the solinoid you should have two,one for up and one for down,you can test by putting a screwdriver on both neg and pos contacts at same time,if thats not it check to make sure nothing came unpluged

SOURCE: suzuki outboard DT 140 tilt trim switch worked

Check all wire connections, Check switches at binical and at pan on engine. Bill

SOURCE: tilt and trim

I Might Need Some Further Info!
Is It A Single Ram Or Three Ram Trim Unit?
When You Go Does The Motor Push It All The Way Down Or To A Just Over Half Way Position?
There Is A Screw On The Side Of The Transom Brkt's This Is A Manual Release Make Sure It Is Screwed In Fully.
If This Does Not Help Or Is Fully In,Then There Is A Hydraulic Valve In The Trim Pump Motor That Is Leaking /Bypassing
Hope This Helps