Dear Voodoo,

In this pic (from the VTX side), you can see the 3.3v marked in a circle, and the ground, is the one of its right side :
https://chrisbarrbuilds.com/wp-content/u...24x768.jpg
And in this pics, you can see the FC from its other side. the ground leg is the secomd from the right.
In my quad, I checked, and found that they are connected electrically right now ( I have checked from the other side of the leg)
Can you tell me about that bridging question that  I have asked ?
https://www.kiwiquads.co.nz/wp-content/u...00x600.jpg
https://emax-usa.com/media/catalog/produ...o-0083.jpg
https://chrisbarrbuilds.com/wp-content/u...24x768.jpg
In my Tinyhawk, this area is already dirty, with solder and 'time/use', So I am going to clean it when I have the right tools (hopefully 1-2 days)

A-N-D, LOL

to add to the party, I checked also connectivity in tx antenna, and found that the 'hurt' antenna, is indeed hurt, and need to be replaced.
Could you tell me what type of antenna should I look for ?
As far as I got from the web, The stock antenna is a linear antenna. the types of antennas that I can find available here, are all kinds of RHCP antennas, with a SMA, uf.l etc...
the following antenna is available here : 
https://www.team-blacksheep.com/products...ph_pro_ufl

will it work if I solder a coaxial cable withthe correct  uf.l connection and then, the antenna to it ?
just half of this cable : 
https://images-na.ssl-images-amazon.com/...L1000_.jpg

(I am still not familiar with antennas)

Replacement antenna. Just cut off the connector. Solder shielding and center wire to the appropriate pad.

https://www.amazon.com/dp/B077B67K5D/ref...QEb6RY34EA

OK, to sum the experience for my fellow hobby enthusiasts,
A used (3rd hand) Tinyhawk S, The video was ok in the first days of flying-crashing... at least I think it was ok, because the longest flight with goggles took no more than 10 seconds before getting over excited or disoriented, and crashing again...
after some 3-4 days, when I disconnected the battery, the XT30 connector was disconnected and I re-soldered it to the board.
a very ugly and some half way soldering work...
I started to have bad video, and I decided to take the VTX antenna out, I relized that it had a dent (squeesh ?! I miss the word), So I checked conductivity between ground and signal pads of the antenna and had the BEEP, means that the antenna is not ok and had to be replaced.
I live in Israel, and these are COVID-19 days, It gonna be a hell to wait for a replacement antenna.
I decided to un solder the original antenna and create a mixture between a lollipop antenna and a pigtail that I had, It did not work well due to lack of skills, magnifying glass, the right size of shrink tube etc....
So I decided to take the active part of the original antenna and connect it to the pig tail and solder the pigtail to the VTX.
It works, for now, I have tested it, and there is an image in the goggles, even from distance, and for long period of time.
Here are some pics that show the final antenna :
https://photos.app.goo.gl/xYeeKXwn1Bhag3cr9
https://photos.app.goo.gl/aPXS9BJ1TKcJA9yt6
and in my other post ( https://intofpv.com/t-tinyhawk-s-vtx-ant...-challenge ) you can find some more pics of the process.

Many thanks to SnowLeopard and Voodoo614 for their support along the way (72 hours marathon LOL)

Doronba