Thread Tools
May 09, 2019, 03:12 PM
Registered User
Thread OP

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 Thanx in advance
Sign up now
to remove ads between posts
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

Quick Reply

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Data VTX RF Power Testing (FPV AiO - micro VTX - VTX) muteFPV FPV Equipment 19 Jul 04, 2019 02:10 PM
New Product F3 V4 AIO - OSD PDB 5/12V BEC, Current, VTX upto 600mw, V3 no VTX, 2.2 w/o Current sevet Multirotor Drone Electronics 517 Jan 17, 2019 05:09 PM
Help! no power to VTx question mjgillen FPV Equipment 9 Jul 19, 2017 12:11 AM
Discussion VtX is recieveing power but no signal to goggles abiddar FPV Equipment 1 Mar 05, 2016 08:50 AM
Help! Vector osd no power out of vtx port? hjscm Eagle Tree Systems 2 Sep 15, 2014 09:07 AM