Bravo Annunciator Panel Dimmer not working

[alextstone]

The annunciator panel dim function on 1995 Mooney Bravo, SN0201, is not working.  Everything else does.  Does the MS braintrust have any ideas as to what could be the root cause

 

Thanks in Advance,

Alex

 

[LANCECASPER]

On 7/29/2023 at 3:10 PM, alextstone said:

The annunciator panel dim function on 1995 Mooney Bravo, SN0201, is not working.  Everything else does.  Does the MS braintrust have any ideas as to what could be the root cause

 

Thanks in Advance,

Alex

 

I believe this is the company that made it and they still service the annunciators.  https://www.internationalavionics.com/

[alextstone]

14 minutes ago, LANCECASPER said:

I believe this is the company that made it and they still service the annunciators.  https://www.internationalavionics.com/

Thank you!  I will call them tomorrow.  I should have given more information when I made this post as it may be relevant to the problem / solution.  The aircraft was in for avionics installations, one of which was the MicroKit LHS.  The installer wired the gear warning to the "Gear Down" annunciator.  However, when they did the install, they crossed the 24V+ with the gear down leads at the LHS unit.  Ever since then, the dimmer functions do not work for either the "Gear Down" (controlled via the Nav Lights switch) and the annunciator panel as a whole (controlled by the dimmer button on the unit).  

Is it reasonable to suspect that application of 24V to the lead from the gear down lead at the annunciator could have damaged the unit's overall dimmer functionality?  I don't want to be "that guy" who blames a shop just because a part fails concurrent with an install but I cannot help but think the two are related....

[LANCECASPER]

1 hour ago, alextstone said:

Thank you!  I will call them tomorrow.  I should have given more information when I made this post as it may be relevant to the problem / solution.  The aircraft was in for avionics installations, one of which was the MicroKit LHS.  The installer wired the gear warning to the "Gear Down" annunciator.  However, when they did the install, they crossed the 24V+ with the gear down leads at the LHS unit.  Ever since then, the dimmer functions do not work for either the "Gear Down" (controlled via the Nav Lights switch) and the annunciator panel as a whole (controlled by the dimmer button on the unit).  

Is it reasonable to suspect that application of 24V to the lead from the gear down lead at the annunciator could have damaged the unit's overall dimmer functionality?  I don't want to be "that guy" who blames a shop just because a part fails concurrent with an install but I cannot help but think the two are related....

There's probably a resistor in there that they blew maybe?   

There's a guy that's worked on car radios for years in San Antonio. I brought him my flap LED indicator and a new pico fuse and he replaced it. I've had him do a few things like this over the years. I always ask what I owe him - he says $10 or $20, I always give him double. Unfortunately these guys are vanishing.