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 Friday at 12:04 AM3 days 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.

@here

Mod Conflict
Can you please try with an empty community folder? Its possible there is some other mod installed that is now causing a conflict.

There was already one identified by the community (Twotter Revived) that was preventing ENG 2 startup. That mod itself has received an update which will prevent the conflict with Tristar (or any other addon), but its possible there are other mods influencing core sim functions even when their respective add-on is not loaded. So a conflict needs to be ruled out.

You need not uninstall any addons, simply rename your existing Community folder (e.g. _Community) and the sim will create a new empty one in its place on next start. Once you're done testing, delete the empty one and rename the old one to restore your addons.

Assistance Settings

Verify that all assistances are disabled. They have a tendency to reset after sim-updates even if you had previously disabled them.

These ones are known to conflict with logic

• Automixture

• AI Auto-Trim

• Auto-Rudder

• Disable Crash Damage (ticked = disabled)

• Disable Aircraft Stress Damage (ticked = disabled)

• Disable Engine Stress Damage (ticked = disabled)

• Unlimited Fuel

No Repro

On our end we're not able to reproduce these issues starting the APU from C&D. Neither using the auto-flight engineer nor manually. See video attached on a streamed copy of 1.0.6.

1.0.6 - Starting from C&D manually - Standard

1.0.6 - Starting from C&D via PFB FE Autocomplete - Cabin w/ Lounge