Is there a way to bench test a master solenoid?
Is there a way to bench test a master solenoid?
Yes.
I?ve found master solenoids with intermittent high resistance across the main contacts. Easy way to check is remove it to the bench, connect a good digital ohm meter across the big terminals, and repeatedly power the coil terminals with a battery. A good solenoid will be the same nil ohms every time. Any variation in ohms makes it a throwaway.
In the last 16 hours, I've had two separate total electrical failures. Volts drop off to nothing, and the power comes on and off.
The most recent event was over KS, enroute from KIDP -> KAEJ, and occurred right when I hit a pretty good thermal bump.
I replaced the master solenoid prior to the flight home, and it was uneventful.
As the issue is quite intermittent and unpredictable (first event was in clear smooth air), I'd like to test the old solenoid and get an idea if it is the issue. As it stands, leaving the home base area makes me a little nervous since the issue isn't 100% clear.
Thanks.
In the last 16 hours, I've had two separate total electrical failures. Volts drop off to nothing, and the power comes on and off.
The most recent event was over KS, enroute from KIDP -> KAEJ, and occurred right when I hit a pretty good thermal bump.
I replaced the master solenoid prior to the flight home, and it was uneventful.
As the issue is quite intermittent and unpredictable (first event was in clear smooth air), I'd like to test the old solenoid and get an idea if it is the issue. As it stands, leaving the home base area makes me a little nervous since the issue isn't 100% clear.
So what you are saying is that the resistance is intermittently high with repeated activation of the solenoid, not intermittently high while the solenoid is activated / power is flowing.
I've had two separate total electrical failures. Volts drop off to nothing, and the power comes on and off.