Interestingly it's happening in my FSLabs too - could it be a spotlight issue? 

Actually found the answer over at FSLabs - looks like a LM bug - to do with lots of exe.xml addons.

https://forums.flightsimlabs.com/index.php?%2Ftopic%2F13973-fcu-isis-and-other-secondary-instruments-go-dark-during-cruise%2F

Got it here too. I thought I was losing my mind but it's happening to me as we speak.

9 hours ago, VOZ102 said:

Actually found the answer over at FSLabs - looks like a LM bug - to do with lots of exe.xml addons.

https://forums.flightsimlabs.com/index.php?%2Ftopic%2F13973-fcu-isis-and-other-secondary-instruments-go-dark-during-cruise%2F

I don't think that's completely correct. I have one thing in either of my exe.xml files and I'm still getting the issue.

18 minutes ago, richcam427 said:

Got it here too. I thought I was losing my mind but it's happening to me as we speak.

I don't think that's completely correct. I have one thing in either of my exe.xml files and I'm still getting the issue.

richcam427,

Peter's statement about "lots of exe.xml addons" I think is not correct...I think Peter meant add-on.xml - BIG difference.

I'm curious what the one thing is that you have added as a .xml. It wouldn't be an FSDreamTeam airport would it?

Yeah, that's not the issue according to LM McCarthy in this post:

http://www.prepar3d.com/forum/viewtopic.php?f=6312&t=127338

It is a bug introduced in v4.1 that will be fixed in next version.

Same problem ,after a few time on flight Panel light disappear ...

Just to add, same issue here.  Just shot a very dark stormy approach into SEA with the main panel lights out.  The dark flap indicator was no fun.  Lets just call it a popped breaker while the solution is found. 

Im having the same problem, since installing P3D v4 and downloading PMDG 737 after an hour of night flying

the captains side Panel lights go out.

Ross Elliot

14 hours ago, deadwing said:

Im having the same problem, since installing P3D v4 and downloading PMDG 737 after an hour of night flying

the captains side Panel lights go out.

http://www.prepar3d.com/forum/viewtopic.php?f=6312&t=127338

Now with the release of P3D v4.2, anyone who had this issue and installed the latest version, did it fix the issue? The only issue I have with v4.1 is some of the PMDG NGX CPT main panel lights going out, especially the flaps one. No biggie as I can see on the PFD the flaps selection and don't want to run a Client update if that doesn't fix the issue.

Thanks.

Don't know where i read it but i saw a post from Chris (Olympic260) that they could no longer reproduce the error (no, NOT a bug) by the test team, so it should be fixed.

I still am on 4.1 so can not confirm ...

 

8 hours ago, jotafl said:

Now with the release of P3D v4.2, anyone who had this issue and installed the latest version, did it fix the issue? The only issue I have with v4.1 is some of the PMDG NGX CPT main panel lights going out, especially the flaps one. No biggie as I can see on the PFD the flaps selection and don't want to run a Client update if that doesn't fix the issue.

Thanks.

On the beta versions it was fixed. Have not tried on the released version but do not see any reason why this should have been removed from the release version.

 

 

Great to know, thanks for the info.

So, I was experiencing this issue on 4.1, upgraded to 4.2 and the issue still persists.  Not sure if anything has been found or if there is something else I need to do.

Thanks!

7 hours ago, nessenj said:

So, I was experiencing this issue on 4.1, upgraded to 4.2 and the issue still persists.  Not sure if anything has been found or if there is something else I need to do.

Thanks!

Did you update per the LM installation instructions?