PMS GTN 750 not turning on without bat/and power

JetNoise

Crashbar: Electrical Circuit Page 75/76 in the manual . RTFM ;-) ;-)

Randolf

@jetnoise yes, I have the latest version of PMS GTN750 v2.2.4 and as mentioned in my previous post, tried with and without the WTT mod, same results.
From the electrical schematic in the BKSQ TBM850 manual ( https://dxhb0it26is40.cloudfront.net/manuals/BKSQ_TBM850Manual.pdf ), page 75, I can see that normally the GPS is powered by "essential radio bus 1", but without main or ESS bus power, it should probably be powered by "battery bus" and "ground clearance unit", top left of the schematic. Maybe that connection is not checked in the GTN750.

JetNoise

@randolf

Had to finish my flight first ...
Here you go ...

Oliver

Randolf

@jetnoise thank you for the confirmation that it shoud work. I'll keep looking.

ZenIT_SWE

Hmm, I wonder if it's a livery thing?

JetNoise

@zenit_swe
Could be a livery, could be an outdated wtt mod or simply a corrupted install...

Sergio

Same here...GTN750 does not turn on with the radio master switch on and crashbar up, however it works with the GNS530 (using default livery)

@randolf said in PMS GTN 750 not turning on without bat/and power:

I can confirm that the PMS50 GTN750 doesn't turn on with the "radio master" switch without turning on the battery/GPU switch. If I switch out the GTN750 for GNS530, the 530 works as expected, turning on with "radio master" switch even without battery/GPU switched on.
Tried PMS50 GNS730 with and without WTT mode, same result. I mean the WTT mode package from here https://pms50.com/msfs/aircrafts/
Not sure where the problem is, if with PMS50 or Black Square addon.

Laurreth

I don't think that block diagram of the electrical system is that great. As it is, you need to set the ESS BUS TIE to EMER, and the radio master will turn on a GTN750 and the transponder when the crash bar is up. But it appears to be behaving wrong with the 750, maybe that is hooked up to the wrong bus.

(edit) Looks like it's on the correct circuit, same as the other COM1 units.

paulwareing

From the discord...

Sergio

@paulwareing Great...now it works :clapping_hands: :clapping_hands:

Randolf

@paulwareing yes, thank you for relaying this! This works indeed.
Now I can use electronic checklists on the GTN750 before powering up the whole craft.

Voice of Reason

Yes to confirm, a message from the developer:

'This was actually caused by a single typo. I've fixed it for the next update, but if you want to fix it yourself, change the following line in the panel.xml file.'

Hope that helps