Annunciator panel wiring

[e5bcap]

Hello, I have a 1970 M20F and my “gear up” annunciator light does not work when the test button is pushed. I am looking for a wiring schematic for the circuit board located behind the test button. Thanks 

[7.Mooney.Driver.0]

Hello, hope this helps. I had the same issue and it turned out to be a bad diode.





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[LANCECASPER]

21 hours ago, e5bcap said:

Hello, I have a 1970 M20F and my “gear up” annunciator light does not work when the test button is pushed. I am looking for a wiring schematic for the circuit board located behind the test button. Thanks 

Have you checked that the bulb is good by swapping it with one that lights up?

[Huckster79]

11 hours ago, LANCECASPER said:

Have you checked that the bulb is good by swapping it with one that lights up?

This.

Make sure ya don’t chase down a problem that’s not there… easy enough for all of us to forget these steps at times, and maybe OP has- but I’ve caught myself chasing problems and then simple things like this dawn on me after I’ve wasted time looking for a complicated issue that wasn’t there. 

[Fly Boomer]

3 minutes ago, Huckster79 said:

This.

Make sure ya don’t chase down a problem that’s not there… easy enough for all of us to forget these steps at times, and maybe OP has- but I’ve caught myself chasing problems and then simple things like this dawn on me after I’ve wasted time looking for a complicated issue that wasn’t there. 

This is one of the reasons I read MooneySpace all the time.  My natural inclination is to go for the most complicated or most expensive answers first.

[MikeOH]

I read it that the OP's gear up light is on when the gear is up. It just doesn't TEST during pre-flight checks.

I, therefore, vote 'bad diode'

[e5bcap]

Thank you, I agree with check easiest first. I have continuity from post R at the plug through the bulb to ground.