Devo F12E Fpv problem?

Hi Guys or Gals
Have a Devo F12E 4 in 1 module and voice module all working good the problem if any can help is my Fpv antenna snapped of at the module I have resoldered module terminal back on
But ever since this I have snowy picture and the transmitter switches off like there’s no power even though the switch is on but can switch off to on it works again....and if I use without Fpv on it seems ok and stays on ?
Cannot see any short in the antenna terminal or any bad solder joints ...does anyone know if the Fpv module can cause this problem or something else also tried finding a module replacement with no joy?
Any help would be great sorry if this is in the wrong place please move if so?
Stavross

I have checked and triple checked with continuity

Hi again
Not had any views yet on this?
So if any clever people out there ....as thought I would try this as a replacement fpv receiver looks similar pin out except more channels for fpv but was only thinking of linking upto channel 4 and only using the direct female pins on the daughter board to this module any thoughts on this and if it would work as better than a faulty one?and no help from Walkera as out of guarantee now!

I think you should successfully replace the original 5.8G module, this is my test module. JM201R(32CHANNEL) [attachment=11822]