Master power is on and illuminated, but when I press "start", the "NG tachometer" and "TGT indicator" gauges do not function.

Hi, can you upload a video demonstrating the steps you are taking to power the APU? You can link the video from either YouTube or Google Drive, thank you.

Have you turned on the tank 2L and/or 2R fuel pumps? If I'm remembering correctly, that's a required step to start the APU.

Yes, I did activate the fuel pumps on the left or right tanks.

I am having the same issue. I have a video: Video link

https://youtu.be/_-kwQLGaahk

Give it time. I believe since 1.0.5 you need to keep the start button pressed for like 30 seconds before the old thing finally gets cranking. Try it and see if it's still the case. It was corrected I believe after it was reported that the APU lights up before the door sequence finished.

Tried 'MD82's recommendation. Unfortunately it did not correct the electrical system problem. Thank you for the input.

Problem not solved despite MD82's advice, whom I thank.
(YouTube link attached)
https://youtu.be/pKYwOH8U0E0

I'll pass this along to the team.

You've made sure that this switch is enabled?

Claudius04, Thank you very much. I loaded the sim and double checked the settings and the problem persists. Thank you for letting the team know about this.

I did get the autopilot working but not the APU. I tried to start on the runway again and although everything was working in normal way, I could not get the APU to power up.

Edited yesterday at 12:04 AM1 day by Bugeater64

Same issue here. It happened yesterday and today, so it appears that whatever was "fixed" in the update, broke the APU start. Prior to the latest release, I never had any issues starting the APU.