PCB female socket wiring for video Rx help pls

[Billy_boy_2010]

Hi guys

So my 12V video Rx has developed a loose connection. My fault for using a 90 degree connector which has applied torque to it over time.

Anyway- I'm going to desolder it and solder some wires and a xt60 to it.

However, I dont know how it's wired up.

Which is the + and -? The 3 solder joints in question are the three on the bottom right of the pcb- in the shape of a U

Any help would be great! Fortunately I have a solder sucker!

[electrotor]

It is normal for the centre pin to be the +ve, except JR gear, DUH!
I have looked closely at the joints you mentioned and based on one of them being isolated from the general surrounding board and two of them appearing to be connected to the general surrounding board I have marked them accordingly. If you do not have a test meter you can still check using a simple 1.5V cell, a small bulb and a length of wire to complete a circuit.

[Billy_boy_2010]

That's fantastic thanks ever so much.

A voltmeter confirmed that the two pins you marked as Negative are the same- but it wouldn't confirm whether they were + or -

Hope this Works.......!

[Coyote]

To confirm if its positive or negative put one test probe on the outside of your rca socket ( video one or audio it doesn`t matter ) then the other probe on the pins you think are the negative ones.

If you have continuity, you have found your negative pins

[Ratty]

Another thing to note, is the pattern around the outside of each joint. The two Electrotor has marked as - are the same and the other different.

Do all the ground pins have the same surrounding?

[Billy_boy_2010]

To confirm if its positive or negative put one test probe on the outside of your rca socket ( video one or audio it doesn`t matter ) then the other probe on the pins you think are the negative ones.

If you have continuity, you have found your negative pins

Thanks. I have done this and it confirms Electrotor's diagnosis. Great to have the reassurance though.

Thanks Ratty. Although the solder joints looked the same to me. I have solder suckered them up now :D