USB-C port replacement not working - Samsung Galaxy S20 FE Questions & Answers

Hello,
has anyone successfully managed to replace USB-C port on S20 FE (G780F/DS)? I tried two different replacement boards and phone always refuses to charge with them -- reporting too high temperature of the connector. Swaping back the original one works without any issue.
I need to replace whole board because of faulty microphone, connector itself works just fine. That's how I figured out it is not the matter of faulty replacement part.

when it comes to buying replacement boards from Allibaba, Alliexpress, eBay or Amazon, beware of anything that's cheaper than the most expensive by a long way.
it seems to be a thing in Chinese factories that the bin full of Q.C. fails doesn't always get destroyed, sometimes it makes it's way onto market style websites at prices that'll get people clicking.
I've had this 3 times with completely different classes of products produced in China.
buy another board, check ifixit.com or find a reputable seller with strong reviews.

Related

Calling All Kaiser Diagnosticians

I've had my tilt for a little over two years now and it seems the hardware has finally gave in. About two weeks back, the phone repeatedly got got stuck in a white screen when returning from sleep mode (as identified here: search "white screen issue"). I chose to dismantle the phone and replace the flex cable with one I had salvaged from my friend's dead tilt. Fortunately the white screen went away. In turn, I lost the use of the memory card slot, the touchscreen functionality only worked in landscape mode, and worst of all my sim card is no longer identified. Trying to revert back to my old tilt's flex cable gave me a empty screen all together. My question is, whether I should purchase both a new flex cable and screen or whether a flex cable alone will do? Moreover should I take a chance and dismantle an old tilt sold on eBay? Or just buy a new cable shipped all the way from China as there seems to be no US sellers? Any and all advice is welcome.
Sounds like you may have a loose/bad connection plug, need to recheck assembly.
The old ribbon probably failed completely due to extra stress during dissembly.
Parts from china are mostly copy parts & the quality is normally awful, buying a salvalge phone is a good option if price is right.
For sure a few forum members will have Kaiser spares.
Mister B said:
Sounds like you may have a loose/bad connection plug, need to recheck assembly.
The old ribbon probably failed completely due to extra stress during dissembly.
Parts from china are mostly copy parts & the quality is normally awful, buying a salvalge phone is a good option if price is right.
For sure a few forum members will have Kaiser spares.
Click to expand...
Click to collapse
Thanks for the response, but I disassembled time and again to check the connectors with the utmost care mind you . After some thought, I decided the salvage phone was not a a good option as those may have severe wear on the cable as well and I'm not willing to wait around for a week for the item to arrive to find its dysfunctional (or nearing its fate). Fortunately, I found a legitimate eBay seller in NY who has the new flex cable. Hopefully if the phone recovers, I will update for those who might come upon this thread and have found themselves in a similar situation.

INFO: Replacement charging port for N7000 from ITSTEK works perfectly!!!!

NOTE: I am in no way affiliated with ITSTEK or Amazon. It has taken me so long to find a good replacement charging port for the N7000 I wanted to share this with my fellow N7000 users on XDA.
100% ORIGINAL BRAND NEW Samsung N7000 Galaxy Note 1 & I9220 Charging Connector- micro port Flex & Mic, mobile phone repair part replacement, Samsung part no: GH59-11676A - Why buy copy or refurbished Parts and risk damaging your treasured & such expensive handset, Only From ITSTEK The UK`S Original Parts Specialist.
This is my third replacement Charging Connector and the only one that looks exactly like the original Samsung part and works perfectly.
No signal loss, no excessive battery drain, mic issues, etc.
I paid £18.95, which is cheaper than the Samsung Service centre were quoting me (£35).
I asked a question about whether this was an OEM part or not on Amazon and got lots of helpful replies.
The basic gist of the answers was that if you bought it from ITSTEK it works perfectly, buying from anywhere else was a bit of a risk and in most cases was a copy that suffered from the normal copy issues.
The answer is in the product name:
100% ORIGINAL BRAND NEW ..................... Only From ITSTEK The UK`S Original Parts Specialist.
So why take the risk of ordering from a different seller for a couple of quid saving and end up with a dud.
I am sure the previous two replacements I had purchased were copies.
They both cost much less than a tenner.
They had signal problems and didn't quite look exactly the same as the Samsung original.
The two sets of raised connectors were silvery in colour, not golden as on the original Samsung part.
The text on the board was close to the original, but not exactly the same, missing the production date etc.
Hope this helps some N7000 users out there, it has taken me six months in total to replace my broken Samsung part with a good quality, fully working replacement.
I was so impressed I actually wrote a product review on Amazon.
NOTE: ITSTEK are based in the UK but can ship internationally (according to their blurb on the Amazon site).
Update after 2 months of use
I have been using this replacement part for over two months now without issue.
The charging works perfectly.
The microphone hasn't gone wrong, which happened with a cheapo copy I tried.
The battery is not draining abnormally.
The signal strength for WiFi and GSM-HSDPA is consistent and strong.
Frankly I'm amazed, I thought I would have to pay the Samsung service centre to sort this out.
Which kinda goes against my grain..... I like to fix stuff myself.

[Q] Replace USB flex cable, different revisions=problem?

Hey, I'm looking at replacing my USB flex cable (consisting of buttons, microphone, micro usb port, antenna connector) due to it being defective. However, I used to have a i9100, where replacing this part was very difficult as the reception would suffer if you didn't get the right revision of the board. Some had to resort to cutting (!) the board, and sort of create Frankenstein's board, that actually worked...
Do any of you know if this is the case with i9295? I'm looking for a replacement on ebay, and there are many different revisions and versions out there.
some vendors sell their boards as compatible with both i537 and i9295, while others say their part is only compatible with one of the two
there seem to be two different designs for button layout, as seen in one of the attached pictures. My menu key is way lower than the other two, while the other design available has them in line. Is this a less important difference than it seems? I would think that the buttons wouldn't function properly, if I had to guess based on the images. Some boards sold as i9295-compatible has that design...
As seen in the pictures, my board is rev12a 0510.
Would I need a specific revision, or are the i9295/i537 boards all compatible with each other?
(I've tried asking most every vendor on ebay, but most don't know/understand what I'm asking)
Mks1001
Edit: I've tried contacting Samsung tech support and other repair facilities, but none of them could give me any information. None of them actually repaired the phone. If no external damage was found they would simply replace the device.

Where to get replacement USB-C port for Moto x4?

Hi all, it's been a while since I've last posted here, but have been actively 'lurking'
My wife's Moto x4 suddenly stopped charging. The vendor will not repair even though it's well within warranty (just 2 mo/old device).
Initially they replied 'Phone has drop/water damage', which I know was not the case (as it was functioning perfectly until battery ran out and they even submitted photo's of mint condition).
They offered a mainboard replacement (to sum of $250) which of course I didn't agree on, especially without any proof.
Now they've supplied a picture (attached) of defective charge-port but still maintain position the mainboard has to be replaced.
Witrigs has done an excellent guide on replacement, where it's clear that USB-C port is on sub-assy/daughter-board (https://www.witrigs.com/oem-charging-port-for-motorola-moto-x4).
Sadly the part isn't available from them, does anybody have part# of port-assy and suggestions on where one may find it?
Also i'd very much like a replacement display gasket/seal, suggestions?
Thanks a bunch,
Shuf
This site had them:
https://www.witrigs.com/oem-charging-port-for-motorola-moto-x4

Samsung Galaxy Grand Neo dead. Need help

Hello guys,
I have an old Samsung GT-i9060 phone which I'd received from my previous employer. It has finally given up and is now completely dead. I suspect a faulty charging cable to be the culprit this time as my attempts at superficial repair has proven that the problem is deeper. I tried getting it fixed at a local repair shop but he gave up on the basis that parts aren't available and that the motherboard has gone kaput.
So, to summarize....
Samsung GT-i9060 completely dead
has been dropped several times and cracked digitizer has been replaced.
old battery is not at optimum condition but problem persists when tested with a new battery.
No vibration or samsung/charging logo on display when powered on battery or charging but certain areas of motherboard get heated up if I try to turn it on.
I got some important contacts and backup on this phone which I'd really like to salvage. I invested in a few basic tools and looked up a few tutorials on the interwebz but none seem to help me understand the actual problem. I am a novice when it comes to electronics and can easily try to recover the data through some specialists but the satisfaction in getting it done myself is priceless!
So any kind of help would be immensely appreciated.
Thanks
Make sure that the battery voltage is over 3.6 volt. Then connect phone to pc using usb cable without pressing any buttons then check pc detects phone's soc(broadcom interface) or not.
Thanks. Let me try that out and get back to you.
Update - @engage4 Battery was at 4.27V, fully charged. Connected to PC but it wasn't detected although I observed the same heating issue as mentioned in my original post (see attached pic)
Coincidentally, the memory chip and processor are on the exact underside of the mobo area that I have highlighted (which heats up)
For reference, my previous reply to you is here:
How to check voltage level at a resistor?
I have a Samsung Galaxy S7 (SM-G930F) that appears to be dead. I found the service manual online and I'm now trying to follow the troubleshooting flowchart for power issues. I am stuck at the third step (already), where it tells me to check the...
forum.xda-developers.com
Rizzi87 said:
I suspect a faulty charging cable to be the culprit this time as my attempts at superficial repair has proven that the problem is deeper.
Click to expand...
Click to collapse
What do you mean by superficial repair? What made you suspect the charging cable?
Rizzi87 said:
I tried getting it fixed at a local repair shop but he gave up on the basis that parts aren't available and that the motherboard has gone kaput.
Click to expand...
Click to collapse
Kaput? I know that word. That's a German word for broken. I wonder if he told you this because he wanted to repair the components on the board, or because he wanted to toss out the old board and install a new board and call it repaired.
Rizzi87 said:
old battery is not at optimum condition but problem persists when tested with a new battery.
Click to expand...
Click to collapse
So you already tested with a new battery. Good! That's one of the first things I would do as well. GSM Arena says the battery is "Li-Ion 2100 mAh, removable". At least you didn't need to send it in or leave it to a repair shop to replace the battery. I remember the time when you could replace the battery of your phone yourself. That in itself was very satisfactory. Those were great times! Those times are gone. Now you have to pay a premium to replace a battery. It's "complicated" they say, and so it's not for everyone (or anyone).
Rizzi87 said:
No vibration or samsung/charging logo on display when powered on battery or charging but certain areas of motherboard get heated up if I try to turn it on.
Click to expand...
Click to collapse
Hotter than what's usual for a phone that's charging? If it's shorted, charging may damage it further. You can test it of course, but you're risking it. Don't test charge for longer than you need to, preferably not at all as soon as you realize there's something wrong with the device. There's the risk of battery leaking or catching fire. So be careful and don't leave it unsupervised.
Rizzi87 said:
I got some important contacts and backup on this phone which I'd really like to salvage. I invested in a few basic tools and looked up a few tutorials on the interwebz but none seem to help me understand the actual problem.
Click to expand...
Click to collapse
What kind of tutorials are you reading or watching? What do you think is the problem?
You have to go over more than a few tutorials if you want to be able to intuitively know what to look for or what to do. One way is to start learning about electronics in general, experiment and learn, before you get down to this specific problem. Another way is to start exploring from the repair side of things and work your way into the topic of electronics repair by troubleshooting this specific problem.
Your problem is most likely caused by a short somewhere on the board. So I would suggest you learn about short circuits or "shorts" for short (duh) and how to find shorts in general, and then work your way down to how to find shorts on mobile phones specifically.
Rizzi87 said:
I am a novice when it comes to electronics and can easily try to recover the data through some specialists but the satisfaction in getting it done myself is priceless!
So any kind of help would be immensely appreciated.
Click to expand...
Click to collapse
I know that feeling. I'm wired the same way. If I can, I will try to repair and fix things on my own. Sometimes I will take on things I hardly know anything about. I will try anyway and learn in the process. Some things are admittedly more difficult than others. But that's how you learn and grow your knowledge base.
People no longer repair things. They throw out the old and broken things, and just keep on buying new things like on conveyor belt. This is not good in by any means. The biggest negative impact of this I think is that people stop using their head. They begin to believe that everything in the world is automatic. A light bulb is the result of true magic, especially when you throw in smart home plugs and switches into the equation. People are slowly being turned into slaves of consumerism. Common knowledge diminishes, like what household products you can use to remove stains, and we only live to serve a higher purpose of capitalism.
Do you have the service manual for this phone? You can usually find these online free of charge. Do you have a multimeter? The first tool you should buy and learn to use is a multimeter. Learn about the continuity test, diode mode, and how to measure voltage.
I worked as an electrician and I felt like I had to ask about how to measure voltage at a resistor, because I was unsure and didn't want to risk damaging a board more than it already is. As an electrician, I worked with voltages relative to Earth ground. I never worked with electronics, although I did get basic electronics training and I know all the basic components and how they work. We worked with soldering iron as well, and learned to use an oscilloscope. I was best in class at soldering. This was a long time ago though. We programmed PLCs, made Delta and Y-configuration connections of three phase electric motors, worked with relays and contactors, and we learned a whole load of other useful things.
My point is, always ask someone more knowledgeable and experienced if you're in doubt about something, rather than taking a risk or gambling. This is much more important of course when working with unforgiving high voltages and high currents, so as an electrician I learned early on to respect electricity. This was all part of my training and thankfully I have never had any accident. It's OK to make mistakes, and you're bound to make mistakes when experimenting, but you better have a backup plan and put in some kind of safety net, to protect yourself and to protect your equipment or whatever it is you're working on.
R7027 said:
What do you mean by superficial repair? What made you suspect the charging cable?
Click to expand...
Click to collapse
The USB connector on the charging cable I was temporarily using sometime back had a flimsy connector and I suspect the loose connection might have caused 'spikes' and maybe shorted some components/mobo.
I had dropped this phone on numerous occassions and almost everytime the ribbon connector for the LCD would come loose since the connector on the board was a bit wonky. I used to check this and get the phone working again. This is what I meant by superficial repair.
R7027 said:
Kaput? I know that word. That's a German word for broken. I wonder if he told you this because he wanted to repair the components on the board, or because he wanted to toss out the old board and install a new board and call it repaired.
Click to expand...
Click to collapse
Nah. He simply didn't bother about repairing or even replacing it on the basis that parts are hard to come by!
R7027 said:
So you already tested with a new battery. Good! That's one of the first things I would do as well. GSM Arena says the battery is "Li-Ion 2100 mAh, removable". At least you didn't need to send it in or leave it to a repair shop to replace the battery. I remember the time when you could replace the battery of your phone yourself. That in itself was very satisfactory. Those were great times! Those times are gone. Now you have to pay a premium to replace a battery. It's "complicated" they say, and so it's not for everyone (or anyone).
Click to expand...
Click to collapse
YEs, I thought the battery maight be the culprit but alas, it turned out to be a problem with the mobo.
R7027 said:
Hotter than what's usual for a phone that's charging? If it's shorted, charging may damage it further. You can test it of course, but you're risking it. Don't test charge for longer than you need to, preferably not at all as soon as you realize there's something wrong with the device. There's the risk of battery leaking or catching fire. So be careful and don't leave it unsupervised.
Click to expand...
Click to collapse
Hotter than usual, yes. I have tested and/or repeated the scenario only couple of times so as to not risk any further damage.
R7027 said:
Do you have the service manual for this phone? You can usually find these online free of charge. Do you have a multimeter? The first tool you should buy and learn to use is a multimeter. Learn about the continuity test, diode mode, and how to measure voltage.
Click to expand...
Click to collapse
I have invested in a multimeter, soldering iron and supplies and a heat gun. I do also have a manual for the phone and it has helped me partially.
Rizzi87 said:
The USB connector on the charging cable I was temporarily using sometime back had a flimsy connector and I suspect the loose connection might have caused 'spikes' and maybe shorted some components/mobo.
I had dropped this phone on numerous occassions and almost everytime the ribbon connector for the LCD would come loose since the connector on the board was a bit wonky. I used to check this and get the phone working again. This is what I meant by superficial repair.
Click to expand...
Click to collapse
Thanks for clarifying.
Now that you mention it, one of my charging cable was a bit flimsy as well. Might be what happened with my phone as well. The connector would wiggle left and right so I would have to make sure it points straight into the port and rotate the phone left and right to make sure it's not tugging on it as I put it down on a book shelf. I always charge my phones on this book shelf as the power outlet is close by.
I have actually four identical Samsung 15 W chargers sitting there, all for the Galaxy S7. Three white ones and one black, and each with its own charging cable. I had purchased some extra chargers just as spares, and one of the chargers had a bit flimsy connection, as you say. I actually once spotted that one of the 4 pins on one of the charging cables was too short, and because of it, it was not charging fast enough. I stripped it down to bare wires, all for science and learning, before throwing it away.
On another occasion, I discovered that one of these cables didn't want to charge my phone when combined with one of the four chargers. It was a perfectly fine looking cable. The same cable worked well on the other three identical chargers though. So this was a bit of mystery I had never seen before. That will remain a mystery. That same charger also worked well when combines with other cables. So both the charger and the cable worked well, but only with others, not with each other. Note that these were all original Samsung chargers and cables. The "travel adapter", model EP-TA20EWE. They all came in original Samsung retail packaging. Although the spare chargers I purchased did have a bit stiffer and thicker cables, when compared to the original that came with the phone. They were presumably made in later years, so Samsung had probably changed them up a little bit.
But this goes to show that there is more to a cable and a charger than meets the eye. I suspect it had something to do with lack of compatibility across the many charging protocols that are in circulation in the fast charging universe, like Qualcomm Quick Charge 2.0 vs. 3.0 vs. USB Power Delivery 2.0 vs. what-have-you.
So you're not wrong to suspect something as "simple" as a charging cable. Not even a cable can be left alone, they have to make it "smart" and complicated. If the cable doesn't know how to talk the language of the charger, it's useless. Or worse, it can destroy a device. All because industry wants to satisfy inpatient people that want fast charging, and so instead of 1 standard, they make 4 different ones, if Apple Lighting-whatever is included. By the way, the faster you charger a battery, the faster it will lose its capacity and die out.
Rizzi87 said:
Nah. He simply didn't bother about repairing or even replacing it on the basis that parts are hard to come by!
Click to expand...
Click to collapse
That depends where you look and how determined you are.
I ordered a new S535 power IC for my Galaxy S7 from Germany via Ebay, and I received it last week. I don't have the exact dates, but it arrived within the same week, so about three to five days. From Germany to Sweden. I also ordered three of the same chip from a supplier in UK, also via Ebay, and it has yet to arrive. This has to do with Royal Mail strikes, so everything is delayed. In addition, I had to pay customs fee and import tax from the UK. Not sure if it will be held at Customs service and delayed even more because of this, or if it will be delivered straight to my mail box since the UK supplier made sure I can pay upfront so it can be cleared for delivery. So I will have 4 of these in total.
Let me give you another example. I have an older car that's well looked after and only driven occasionally. A few years back, it started leaking oil from the rear axis. I went to the authorized repair shop. They told me they had to either replace the differential or rebuild it. But because it's an old timer, there are no parts for it readily available. This is a BMW car and BMW has a good reputation for stock keeping parts for old models for a long time. Well, maybe they don't keep a stock of big parts such as differentials. But it's not true that it's not available. I looked it up online and found several car stripping companies that have a number of these parts to pick and choose from, some of which were in almost new condition. So if they really wanted to, they could have ordered in from there. This is where small and independent auto repair shops order from as well. I even offered to order it myself and deliver to them. But they could not make the needed arrangements. Or rather, they didn't want to. I understood the message. They can't be bothered with something as heavy, oily, dirty, difficult, skill demanding, and time consuming as a differential replacement... and a rebuild is probably as distant as science fiction to them. I never went back there. I used to go to them for years and was always happy. Since they changed the owner and relocated, it's a completely different company. I would never again go to an "authorized" repair shop. They are properly titled "car dealers", because they are more interested in selling you a new car or a used car than repairing your old one.
It's the same with phone companies like Samsung and these places they call "Support Center" where you can walk in to get support and service on the device you already own, and they put up their latest "flagship" models on display and under your nose. That's how you know you're in the wrong place. It's all sell, sell, sell.
Rizzi87 said:
I have invested in a multimeter, soldering iron and supplies and a heat gun. I do also have a manual for the phone and it has helped me partially.
Click to expand...
Click to collapse
Make sure to get the needle-like test leads for it. This is needed for probing and measuring tiny components. The ones that came with my multimeter were very good, but they were not fit for the job, because they are not thin enough at the top. Most of the standard test leads have blunt tips. I ordered a pair from Amazon, a complete kit actually, but they are not very good. The whole kit was very cheap and I could not find any other, higher quality, more expensive ones. I don't want to promote Amazon, but I can post a link if you want.
A heat gun might work, but a hot air station is better. You need about 350 C to rework big components like BGA chips. Based on my limited knowledge, but extensive research. You should be able to tell what the temperature is at, and only the more expensive heat "guns" will have a temperature sensor and a digital display.
A service manual is a good resource. I wish I had a complete service manual for Galaxy S7. I looked for a places to buy one but I only found dodgy websites that seemed to be in the business of downloading free manuals, packaging, and selling. So if you have a complete manual, that's better. I only found excerpts of the most important chapters for Galaxy S7, and it has been very useful.
So, umm, there has been no progress on the repair front as I had been away on a trip and got my phone stolen
I was a bit occupied with reporting to the authorities and blocking my phone number hence I couldn't reply earlier.
Btw, I stumbled upon something called as boardview bitmap files; I'm yet to fully explore it but it seems really helpful.

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