I'm currently repairing a charging unit for a smartphone. I'm about to attach a 5 pint Micro USB female socket to it. The old one wasn't making contact so it had to go.
On these 5 pin sockets the first pin is + Positive and the last pin is the - Ground. I noticed when I use a continuity tester that there is continuity between the + and Ground terminals where I solder the female connector to. I went ahead and soldered the connector to it anyway (tested all the connections and they contact well) .
When I plug in the wall charger into the phone, the charging unit (the one in the wall) switches off. I feel it may be to do with that continuity between the + and - terminals but I'm not sure.
My continuity tester is just two rods with a low voltage light. When you touch the two wands together it lights up if there's continuity.
I realise it's probably better to use a multimeter to test resistance between the + and - terminal on a circuit, but I don't have one.. I'm stuck in India due to this pandemic and am trying to fix my phone.
Should there be continuity between the + and - terminals even when the female usb port is not attached? They are all surface mount components by the way.
Any help on this will save my life.. Thanks very much to anyone who can shed some light on this.
[the USB port has 5 pins.. The first one is the GND (-), the fifth one is positive (+). The rest are data and sensor ports]
On these 5 pin sockets the first pin is + Positive and the last pin is the - Ground. I noticed when I use a continuity tester that there is continuity between the + and Ground terminals where I solder the female connector to. I went ahead and soldered the connector to it anyway (tested all the connections and they contact well) .
When I plug in the wall charger into the phone, the charging unit (the one in the wall) switches off. I feel it may be to do with that continuity between the + and - terminals but I'm not sure.
My continuity tester is just two rods with a low voltage light. When you touch the two wands together it lights up if there's continuity.
I realise it's probably better to use a multimeter to test resistance between the + and - terminal on a circuit, but I don't have one.. I'm stuck in India due to this pandemic and am trying to fix my phone.
Should there be continuity between the + and - terminals even when the female usb port is not attached? They are all surface mount components by the way.
Any help on this will save my life.. Thanks very much to anyone who can shed some light on this.
[the USB port has 5 pins.. The first one is the GND (-), the fifth one is positive (+). The rest are data and sensor ports]