FPV stopped working: Is this really the solution?

[pilsburypie]

I have posted about my issue previously and spent God knows how long deliberating over it. Basically, Phantom 2, Zenmuse 3D gimbal, Gopro hero 3 black, VTX and generic monitor with built in receiver.Purchased pre assembeled.

This worked fine for approx 4 months, then on one flight, nothing. No crashes, knocks or bangs - No snowy screen, just a black screen "no signal" displayed. After checking the channels, checking the monitor, checking the vtx, all seemed to be individually working fine. So reaching a dead end of my ability I had to admit defeat and send it away and pay for a professional to trouble shoot. I got this reply yesterday but am stumped by it.

"on the video feed from inside the craft there is just one yellow cable connected, this I presume is the signal wire, but there needs to be a ground aswell, so thats missing and that would stop the video signal form being transmitted."

Is this right? How can it be? I have not removed any wires at all and it used to work fine....... Keen to know as I don't want to pay for unnecessary workshop time to do something that doesn't fix my issue..... :?

Thoughts really appreciated.

 

[SteveMann]

I have posted about my issue previously and spent God knows how long deliberating over it. Basically, Phantom 2, Zenmuse 3D gimbal, Gopro hero 3 black, VTX and generic monitor with built in receiver.Purchased pre assembeled.

This worked fine for approx 4 months, then on one flight, nothing. No crashes, knocks or bangs - No snowy screen, just a black screen "no signal" displayed. After checking the channels, checking the monitor, checking the vtx, all seemed to be individually working fine. So reaching a dead end of my ability I had to admit defeat and send it away and pay for a professional to trouble shoot. I got this reply yesterday but am stumped by it.

"on the video feed from inside the craft there is just one yellow cable connected, this I presume is the signal wire, but there needs to be a ground aswell, so thats missing and that would stop the video signal form being transmitted."

Is this right? How can it be? I have not removed any wires at all and it used to work fine....... Keen to know as I don't want to pay for unnecessary workshop time to do something that doesn't fix my issue..... :?

Thoughts really appreciated.

If the board is getting power, there is a ground wire.
It would be a lot easier if you could find someone with a similar setup nearby.

 

[pilsburypie]

Steve

I know of no one near me unfortunately. Just to clarify what you said, about the board getting power.... what board?

 

[SteveMann]

"No Signal" usually means that the receiver is not receiving a signal from the transmitter. If you can get an old UHF TV receiver, 5.8GHz is between channels 32 and 33 - you might be able to find the signal there.

 

[d4ddyo]

can you post your setup? what monitor, vtx. vRx?

 

[noiseboy72]

"No Signal" usually means that the receiver is not receiving a signal from the transmitter. If you can get an old UHF TV receiver, 5.8GHz is between channels 32 and 33 - you might be able to find the signal there.

Err.. Not in the UK. Channel 33 is more like 550MHz, not 5880MHz.

I would think that your TX has lost power for some reason. This could be a faulty TX, or just a simple cable failure. I suggest you find a local shop with some basic test gear, or failing that, buy a cheap, low power TX and use this to test the rest of the gear.

If you can come over to Lincs / Leics (I live on the border) I can happily sort this out with you. I have spare TXs and test equipment, plus other monitors and RXs, so we can substitute items until we find the problem.

 

[pilsburypie]

Thank you all for your suggestions and offers of help. This has hopefully been sorted now by quadcopters.co.uk. I'm expecting it back on Monday.....