Soldering a usb cable to SM R760 - Samsung Gear S3

hey there I followed a youtube video on how to solder usb cable into the board, but the thing is when i opened the watch there was a missing pin where you are supposed to solder the data negative. will i sti be able to solder the cables and connect it on a pc? or i won't?
are there ways to do this?

Unless you are good at soldering and have a temp controlled iron you're very likely to damage the board. You wouldn't get 2nd chances and repairing the pcb will be all but impossible.
Pre-tin wires, use rosin core 63/37 lead base solder only.
Get a schematic, otherwise make sure the points are correct. You must be fast as excessive heat will likely damage the pcb pads...

blackhawk said:
Unless you are good at soldering and have a temp controlled iron you're very likely to damage the board. You wouldn't get 2nd chances and repairing the pcb will be all but impossible.
Pre-tin wires, use rosin core 63/37 lead base solder only.
Get a schematic, otherwise make sure the points are correct. You must be fast as excessive heat will likely damage the pcb pads...
Click to expand...
Click to collapse
sorry but i'm not good at soldering. is this the only way? i don't know this

[email protected] said:
sorry but i'm not good at soldering. is this the only way? i don't know this
Click to expand...
Click to collapse
Than leave it be. This isn't what you want to practice on!
You trying to repair it or mod it?

SM-R765F Teardown
Dear friends, I found that the LTE connection is very useful when you have to leave your mobile somewhere and you can get calls and notifications through mobile connection. I bought a Gear S3 LTE (R765) from a Singapore site because in Italy it...
forum.xda-developers.com
You saw this allready?
Best Regards

Related

[Q] Rooting... with a bad USB port

I'm trying to root my daughters phone. Problem is... her USB port is broke. Is this possible? I've tried gingerbreak with no luck, and am having trouble finding anything on this.
Thanks in advance!
You're going to want to be buying a new USB cable. There is no other way to root other than doing it on a computer.
Never mind, I realized you said port and not cable. I don't think there is anything you can do. Sorry.
How broken is the port? It's pretty easy for anyone who's handy with a soldering iron to replace.
The solder points are just sooo close together. I don't think I could do it.
I've done them myself. Know anyone who solders a lot? Maybe you can get them to replace it for you if you order the part.
http://www.digikey.com/product-detail/en/10103593-0001LF/609-4049-1-ND/2350356?cur=USD
This should be a compatible part.
If you are brave enough to do it... just pour solder over all the pins, then use your iron plus solder-wick to suck up all the solder in between the pins. ...and remember to use your multimeter to check for shorts before powering up. Make sure there is a lot of solder on the retention tabs too so it doesn't break again.
You're forgetting one key point. BUY LIQUID FLUX. A dry joint will be impossible to work with. But if you add some extra flux, the solder will flow nicely and tend to hug the pins instead of bridging.

XOOM 2 Battery Problems and Bypass Fix needed

Hi
I have major problem with my tablet and usb socket has been pried from board have taken a quick look at damage and a replacement or solder of new one is out of question and metal contacts on pcb has been damaged also.
I am wondering if anyone knows a way of bypassing so I can still charge.
Can I bypass the small circuit board where USB connector is and hard wire battery connections directly onto USB itself.
This tablet has always served me so well dont want to give up on it just yet as cant afford a new one.
Fairly confident with soldering etc just curious as to whether it will work and best way to wire it up

Golden battery holder wire is cut. Need to turn on for recovery

Hi guys. This is gonna sound awkward. I'm having issues in my personal life and I was talking on whatsapp with brother when I got angry and threw my nexus. the screen is broken like colors and stuff and lines so I tries to turn the phone off by touching where the power off button appears on screen butI couldn't.
since I was angry I removed the back cover and cut the golden wire at the bottom point where it turn. I've tried turning it on by holding the cut ends but no luck. tried charger too but nope. All I wanna do is get into recovery somehow (TWRP) and dump my internal storage.
Thank you.
After some thought about your description.... I wonder if you have actually cut the main ribbon cable from the microphone/speakers/USB assembly this is the one that runs down the side of your phone. your best bet will be to purchase another cable assembly.. since you are dealing with a multi conductor ribbon cable.
I really doubt that you will be able to repair and re-connect the cable without some pretty highly skilled soldering ability.
The battery cable is very short and comes directly out of the battery itself... it is not likely that you actually cut it but did cut the main circuit cable. Too Bad, but this will be a real problem for a repair.
no joy... but you might want to investigate a reputable repair shop.
paultbear said:
After some thought about your description.... I wonder if you have actually cut the main ribbon cable from the microphone/speakers/USB assembly this is the one that runs down the side of your phone. your best bet will be to purchase another cable assembly.. since you are dealing with a multi conductor ribbon cable.
I really doubt that you will be able to repair and re-connect the cable without some pretty highly skilled soldering ability.
The battery cable is very short and comes directly out of the battery itself... it is not likely that you actually cut it but did cut the main circuit cable. Too Bad, but this will be a real problem for a repair.
no joy... but you might want to investigate a reputable repair shop.
Click to expand...
Click to collapse
Thanks so much for replying. Yes indeed I cut the ribbon cable. I'm in no position of buying a new one. I guess I'm gonna take it to someone with high soldering skill. Before that I'm gonna try tape too
Xami said:
Thanks so much for replying. Yes indeed I cut the ribbon cable. I'm in no position of buying a new one. I guess I'm gonna take it to someone with high soldering skill. Before that I'm gonna try tape too
Click to expand...
Click to collapse
Question: if this ribbon isn't battery wire then why the phone doesn't start
main connection cable ( do NOT cut)
Xami said:
Question: if this ribbon isn't battery wire then why the phone doesn't start
Click to expand...
Click to collapse
That ribbon cable is the one that interconnects the working boards in your phone, Microphone, Speakers, buttons. Unlike the battery cable you probably won't be able to fix it... it is pretty much a replacement only part.
this part is called -- LG Nexus 5 D820 D821 Charging Port Flex Cable Dock Connector USB Port With Mic Microphone Flex Cable Repair Part (amazon.com)
you will have to source a supplier close to you... but the good news is that it is relatively inexpensive... Ebay has it listed for $10USD or so.
not trying to be the bearer of bad tidings... but I've spent 20 odd years repairing computers and associated devices. It is always best if you don't cut ribbon cables.

convert micro USB to USB C and add a larger battery

Ok, I have a realme 1 that is dying, I have posted on the new phone thread but I do not expect to get a phone that meets my needs better in all aspects.
**What phone should I buy next?** -- Not sure what device to buy? Ask here!
Hi everyone, This thread is a continuation of this thread. This is here so you can discuss what your next phone/tablet should be, if you're not sure what to pick. Also, if you need advice as to which device is better than another, then feel...
forum.xda-developers.com
The issue is that the micro USB connector is getting worn down and the battery discharges in a few hours. Even new I used to have days on which my battery 3950mAH would be exhausted by the end of the day.
I want to do the following thing
Replace the micro USB port with a USB C port. physically my phone is a plastic fantastic and I plan to carve/shave out the few mm with a knife/scalpel and fill any voids with a combination of expoy putty and expoxy glue. My problem is how to do the internal wiring. I have done some soldering but nothing on a PCB. The most fine work I have done is patch speaker wires. Every repair person i have talked to says that it is absolutely impossible to do. I would appreciate it if someone could walk me through it.
Realme has now released phones with a 6000 mAH battery, So I propose to separate the back cover, carve any obstructions, create any posts needed with epoxy putty, and fix the battery with hot glue. Again the problem is the connections. I realize that the thickness of the phone will increase due to this and plan to fill the gap with epoxy and hot glue.
Yes, I realize that my phone is going to be a Frankenstein's monster. As long it works well I don't care.
I would appreciate it if someone could guide me
amartsg852 said:
Ok, I have a realme 1 that is dying, I have posted on the new phone thread but I do not expect to get a phone that meets my needs better in all aspects.
**What phone should I buy next?** -- Not sure what device to buy? Ask here!
Hi everyone, This thread is a continuation of this thread. This is here so you can discuss what your next phone/tablet should be, if you're not sure what to pick. Also, if you need advice as to which device is better than another, then feel...
forum.xda-developers.com
The issue is that the micro USB connector is getting worn down and the battery discharges in a few hours. Even new I used to have days on which my battery 3950mAH would be exhausted by the end of the day.
I want to do the following thing
Replace the micro USB port with a USB C port. physically my phone is a plastic fantastic and I plan to carve/shave out the few mm with a knife/scalpel and fill any voids with a combination of expoy putty and expoxy glue. My problem is how to do the internal wiring. I have done some soldering but nothing on a PCB. The most fine work I have done is patch speaker wires. Every repair person i have talked to says that it is absolutely impossible to do. I would appreciate it if someone could walk me through it.
Realme has now released phones with a 6000 mAH battery, So I propose to separate the back cover, carve any obstructions, create any posts needed with epoxy putty, and fix the battery with hot glue. Again the problem is the connections. I realize that the thickness of the phone will increase due to this and plan to fill the gap with epoxy and hot glue.
Yes, I realize that my phone is going to be a Frankenstein's monster. As long it works well I don't care.
I would appreciate it if someone could guide me
Click to expand...
Click to collapse
You know you can get a USB C chip for really cheap (compatible with the processor)? All youd have to do then is attach the ribbon cables, enlarge the port hole and test to see if power passes through with a cable. Make sure not to use too much glue, however, because when the phone heats up the glue may melt and run over the motherboard, resulting in a ruined phone.
Varis2X21 said:
You know you can get a USB C chip for really cheap (compatible with the processor)? All youd have to do then is attach the ribbon cables, enlarge the port hole and test to see if power passes through with a cable. Make sure not to use too much glue, however, because when the phone heats up the glue may melt and run over the motherboard, resulting in a ruined phone.
Click to expand...
Click to collapse
I was already prepared to enlarge the opening, please tell me about this chip. where Can i find more information on that?
amartsg852 said:
I was already prepared to enlarge the opening, please tell me about this chip. where Can i find more information on that?
Click to expand...
Click to collapse
There is actually a YouTuber that I conveniently forgot the name of... But he does DIY projects like this, like adding a headphone jack to iPhone 7s and stuff. Call if modding. But his parts come from Chinese marketplaces. I would suggest you research a USB C component chip. Not sure how old your phone is but they are basically universal depending on the OS supported hardware (like Android 9+ supporting QC3.0).
Thank you again for replying. I do not need quick charge. It came with 2A 10 W chip, and that's enough. Cannot I connect the USB C port to the input on my phone. Most USB C implementations are USB 2.0, SO that SHOULD be 4 pins and 5v at max 2 A.
Problem is that that the repair centers are assuring me that is not the case.

wifi has disappeared installing a fan

Hi
i have a big problem. I have an unit PX5 with rockchip 8 core with 4gb ram and 32 of space.
Its a radio for renault megane 2 with amplifier and android 10.
My radio was getting very hot, so I removed the dvd and installed a fan.
Sometimes the fan made noise, so I decided to install a switch, to cut the power to the fan when I needed it.
The fan is 5v and I connect it to the usb of the radio (5v)
But when I was installing the switch, I must have made some mistake, and I started to smell burning.
Quickly disconnect everything.
To my surprise, everything worked correctly: audio, bluetooth, screen, etc.
But the wifi, no. If I activate it, it deactivates automactly.
I have tried wipe cache and factory reset.
I think the usb doesn't work either.
Is it possible that wifi and usb share power?
I thought not, but there's just that scorch all over the motherboard.
I would like to know if you can tell me how the Wi-Fi is powered, I don't care about USB.
I am attaching photos of the wreckage. Flex cable its damaged but screen works perfect. Wifi chipset i think thats okay, but see the photos please.
Thanks for your help!
Looks like a power regulator blew. Might be possible to replace it but with that much char I'm not sure about the health of the board. To get it off the board you'd need a heat gun with a small nozzle, but you could end up causing more damage to the board.
V0latyle said:
Looks like a power regulator blew. Might be possible to replace it but with that much char I'm not sure about the health of the board. To get it off the board you'd need a heat gun with a small nozzle, but you could end up causing more damage to the board.
Click to expand...
Click to collapse
You can fix that with a soldering iron. A couple ways to do it. If you can get in with a small pair of cutters...
Carefully cut the leads* then use a soldering iron at 720F and quickly remove it what's left , one at a time. A lot of times I'll heat it and tap it off. Too much heat and/or for long will lift the pad, you have to be fast.
You can somewhat easily hand solder it on if you have the skillset/tools after you get the solder pads fairly level.
There be more damage including traces.
If you never did it, this isn't the place to learn.
Otherwise you could probably replace it but you might need to do some bridging to repair missing pads or traces.
*small precision cutters, you must not pull up or torque it sideways etc or you'll damage the pad. So you push downward slightly as you cut.

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