Hi, my drone's VTX is an Eachine VTX03, and I also have an RC832 Reciever. I have Quanum v2 DIY goggles, and everything is wired correctly (camera and VTX are directly soldered to PDB- camera and vtx both on 5 volts). When I turn everything on, the goggles just display static and say "NO SIGNAL." I've been through all 40 channels/frequencies on both the vtx and rx, but there is no video. However, every time I do something like changing the VTX's channel, the static in the goggles changes, and occasionally there is a black screen. I've been working on this for a few months now, please help!!!

Sooooo I had the same issue....... turns out the vtx antenna was “missing” a pin and the vtx apparently had the same issue.... who’d a thunk?! Lol true story 

Power level is not reading "O"? I have not had too many issues with the VTX-03's. KT-Bug and The Japalura both have them and they work well. I power the camera from the FC and not through the VTX on The Bug. I kept having an issue like you describe when I tried to power it through the VTX. What camera are you using, BTW?

As Kaity said, double check that the vtx isn't set to zero output power.
Also check the actual V being supplied to the cam and vtx. Personally I have always used 12v (or 9V more recently) to power the vtx.

I had one that had a black screen once like you described. Figured out that I had left the lens cap on. Sorry, just had to say it.

If I had it in front of me I could help but not enough info to go by. Check voltages to VTX and cam and as others suggested, check power setting. It would be easier to set the channel on the VTX and goggles so you're not scanning around and you know they are both on the same channel, then figure out the problem without that being another wrench in the gears.

1 thing I have seen on generic can it only used 12v so as They have said check v out put. Make sure your mated correctly on antennas some have pin some dont.... I know these are basics but I have missed them myself