Connect directly to board

[NielsR]

How can I solder dc supply cables directly to this board?
The male and female dc jack connectors are both broken.
Many thanks!

 

[barry]

1) Get a soldering iron
2) Get some solder
3) Plug in the soldering iron and wait for it to get hot
4) Melt the solder with the hot soldering iron whilst holding the wire to the appropriate spot on the PCB.

 

[BradtheRad]

dc jack connectors are both broken.

Something that looks like a power jack is near the DC1 label. Is there a chance it contains dislocated metal pieces? Before soldering wires to the nearby terminals, you must make sure there's no short circuit occurring.

This is surmise on my part. Since there are three solder terminals nearby, it suggests that the jack has an internal switch to choose between battery power or external power. You should research how such jacks operate. You must avoid soldering wires to the wrong terminals. You must figure out which is the correct positive terminal and negative terminal.

 

[betwixt]

The answer really depends on where it gets its power from at the moment. We have no idea what this device is but it seems to have a USB socket and some kind of small jack socket, I'm guessing these poke through the holes on the left of the picture. "DC1" could be a power input but its pin configuration suggests it could be a 2.5mm or 3.5mm signal connection.

If it is USB powered, you connect to the outer pins of the row of four behind the USB socket but we need more information to be sure. What is the device and what markings are on the outside of the plastic case near the two holes?

Brian.

 

[NielsR]

Thank you. It's a Ocube alarm clock. It has the broken jack just behind where it says DC1. The black tip is peeking out.
There are 3 holes but I'm not sure what could be positive and negative and which one is for detecting switch to battery.

 

[betwixt]

Extra information certainly helps, I have now found the device and can see DC1 must be the power input and the USB socket is a charger outlet. Apologies for asking questions but often it is the other way around and devices are charged through the USB socket making it a power input.

You need to connect the wires directly to the pads behind DC1 but from the photographs it isn't clear which pins to use. Can you send a close-up picture of just the area surrounding DC1 so we can see the copper tracks on the board and also pictures of the plug that goes into DC1 and the label on the wall adapter please.

Brian.

 

[NielsR]

Hi, it's great with questions. The questions will help me fix this (if I haven't broken it in the process of fixing it).
The pads are covered by a DC socket. I might have to remove that to access the pads. Not sure how to do it gently?
The plug is broken. I tried soldering wires to the plug but it was too destroyed hence I decided to attempt to connect power to a board inside the device. Previously I bought various plugs and another adapter to try to connect to the socket but no size of the plugs were fitting the socket
I have some issues uploading photos. I'll try after posting this text.

 

[barry]

you shouldn’t have to remove the jacks to solder wires to the back side of the PCB where the pins come through.