95 Evinrude 115 tilt trim problem

My Evinrude 115 has two trim control switches, one at the throttle and one on the motor. When using the switch by the throttle, the trim seems to work fine in both directions. When I use the switch on the motor to trim the engine down, the trim will work at first however the next time I try to trim the engine down from either switch the trim going down does not work. The problem does not afect the trim in the up direction. After a while the trim going down will begin to work again, we have no idea what triggers it to work again. We also checked for loose wires/connections and everything seems to be fine.

Is it possible that the relay for the down direction has a problem triggered by the signal sent from the motor switch that would cause it to temporarily fail for both switches.

When the problem with the trim is occurring, the trim motor make no noise and the volt meter does not register any current/voltage draw at all. It seems as if no power is being sent to the trim system at all.
Thanks.

Re: 95 Evinrude 115 tilt trim problem

Id look at the wires and connections for corrosion, or corroded inside the wires. Electricity traveling inside the wires causes heat and if the wire or connection is bearly working anyway the heat will cut off the current flow until it cools.
Remove the connections and clean them and reinstall and see if that helps. also try using a jumper wire to bypass each wire one at a time and see what happens.