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May 09, 2019, 03:12 PM
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No power to VTx


Hello, I need some help as I'm starting to lose interest in this hobby. This is my first build.
So I've finished my first build:
Armattan Gecko 3" frame
HGLRC 1407 3600kv motors
HGLRC F428 Stack
TBS Unify Pro32 Nano VTx
FrSky R9mm Rx

Heres the problem. The build was fairly simple. I flew it a few times with no problems. On my last flight my video dropped in midst of a power loop, and when I recovered the quad my antenna had detached from the VTx. I dont know if this was from impact or not, but my VTx smelled fried and it was powerless. So I bought a new one and it is not powering on either. Everything is wired the same as it was the 1st time.
I used a multimeter to test for power on the VTx leads and I'm getting all 15.5 volts co.i g through. Is that supposed to happen? Or am I only supposed to be pulling 5v? Would that suggest a bad FC even though it's getting power? Bad VTx out of the box? Please help. Man, I got this thing built and the day I finished it, it started raining for 2 weeks straight. Now the weather is so nice and this is driving me nuts, a little depressed actually....lol. Thanx in advance
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May 12, 2019, 07:28 AM
Build, crash...repeat
AleRRon's Avatar
Your VTX documentation should tell you specs for what voltages it can work on. I know that some can take 15.5 V but some canít.
Jun 05, 2019, 07:19 PM
Registered User
Post some pictures of your fc and your vtx on how its wired that might help


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