Hi guys,
So the micro-USB port on my Galaxy S3 got spoilt (details here).
I ordered a new port and tools, and I've opened up my phone to get the PCB out with help from disassembly videos on youtube. But I want to get some help (videos or just talk through) for unsoldering the current port and soldering the new one, coz it's tiny. I'm an electrical engineering junior at college, so I have experience soldering pins on breadboard chips, but nothing smaller than that. :/
Looking forward to some help, guys! Thanks
I was waiting for somebody else to jump in, but since they didn't...
You can solder teeny-tiny things with non-optimal tools.
You just have to be careful.
I'd suggest that you get some old junk circuit board and try removing parts first.
You don't want to apply so much heat and pull so much that it pulls the copper off the board.
Solder wick or solder suckers can be helpful for removing excess solder.
For a connector, I add solder to make a bridge over the contacts, quickly dance the solder tip over all the contacts and lightly pry the connector with a small screwdriver.
Clean up the board removing excess solder.
Clean the board with a Q-tip and some rubbing alcohol.
Tin the new part with solder, then "smack" it to get rid of the excess.
By now there should almost be enough solder on both the connector and the board.
Position the connector and dance the soldering iron over the contacts.
Inspect with a good magnifier (if you have one).
I just did a 10 pin 1mm pitch ribbon connector this way.
Now I have a kernel console on my Nook.
Good luck.
Edit: Oh, I didn't see the other post where your problem was just a dirty connector.
Thanks!
Thank you for the reply. I still haven't fully resolved the problem. Cleaning the port out has returned charging abilitiy, but I can't connect the phone to a PC as a USB device still. So I might indeed need to use your guidelines above eventually. Thank you for them, and congrats on that Nook kernel console!
Related
OK, I'm a ****.
Just came to remove my audio daughter board off my M500 to solder up the dodgy joints on it, and the whole bloody connector came off. I've removed the connector from the daughter board, but when attempting to resolder it, I managed to break the connector
So, I need a source of the little rectangular PCB connector (14 way, DIL) that attaches the ADB to the main board, so I can have another go Anyone know a source in the UK preferably?
Cheers
Hellraiser.............>
I have one HTC Elf, and the mini-usb connector was damaged... I tried to open the cellphone to fix it, but I couldn't make a way to solder it correctly.
I was thinking of wiring the connector directly to the board, instead of soldering in it, but the copper trails in the region were damaged, and I can't follow to where they go in the circuit.
Do anyone have the schematic of this part of the phone?
A high-quality picture of the region of the mini-usb connector would be perfect too!
Thanks,
Rafael
Wanted to share my MacGuyvered jig that saved my phone.
Breadboard
2x150K 1x1K
micro usb from extra car charger (easy break apart model)
no-solder just a little scotch tape
Just thought it looked too crazy not share and to give hope to the non electronically skilled.
Nice job. Just to let you know it can be even easier, you don't even have to use a breadboard for this, just link the 3 resistors together, and touch the correct pins on the exposed microusb -> download mode.
The only "hassle" is finding the resistors, but any electronics shops has them, and they cost next to nothing.
that's a good work around
the alternative easy way, as mentioned on the original JIG topic, is to simply twist the resistor terminals together in series, then when you peel off the cable of the microUSB make sure to leave plenty of slack, then you can also twist the wires around the end terminals of the resistors
thanks
the board was in case I wanted to swap the resistors..
and the solder points on the covered and crossed the connectors.
it's a close fit no matter how you do it. and with a dead phone the last thing you want to do is cross the wrong pins. lol
thanks for the props
Hi folks. A friend gave me his phone after he dropped it in water, and then tried to fix it himself.
The connector on the motherboard has been pried, so half of its cover is missing and some pins are tangled up inside.
I'm guessing about 4 pins are mucked up; the rest are fine. But the phone will not power on..
I'll try to include some pictures.. Any ideas how to proceed? I thought about soldering tiny connections from the MB to the ribbon connector.
Replacing the connector seems equally difficult due to the number of unsoldering/soldering to do..
Any ideas what to do?
PS: Forum attachment limit is silly; I'll link to external images on my server instead..
Check the pins of the connector that has an "MB" label on it:
http://www.kalfaoglu.com/basarzenfone6-1.JPG
http://www.kalfaoglu.com/basarzenfone6-2.JPG
Many thanks for any feedback...
-tk
Friends the socket was removed and points also ... now the service is bad , i try to solder it but the hole small socket get broken and also the some points get removed , i try to put small metal inside big connector and connect the flex cable to that one and i solder cable from side the connector to the out side of flex cable but the signal is very bad any why to fix it without plug and flex cable as they get damaged ??? like soldering wires between area's ???
So either the motherboard or the USB board lost the antenna connector. Hopefully it's the USB board as you're going to have to replace the board based upon your description.