Develop Bugs

[Q] IC socket burnt on the motherboard

Hey
i spilt water on my phone, a samsung galaxy nexus i9250 and i did the mistake of charging my phone after a few hours.
Now the phone doesn't charge at all. But everything else works perfectly without any problems. i have to remove the battery and charge it using a wall charger and put it back to use the phone.
i opened up the phone and found out that the IC socket on the main board which is used to connect the Charging Port Flex Ribbon and the connector of the ribbon is burnt.
i ordered the charging module off ebay, but its of no use if the socket on the motherboard itself is burnt. (6 pins of the socket soldered on the motherboard)
I just wanted to know if its fixable and if it can be fixed, can someone tell me where i can get the part.
I live in india where the phone wasnt released.
Thanks in advance
PS : I have been a silent member all this while and i would like thank all the members for their continuous effort in helping out other members.

Slow charge

Hello xda members, i have been experiencing a problem on my tablet Samsung Galaxy Note 10.1 (2014 Edition) Android version 4.3 since the past month. It does not charge as usual and a red cross pops up on my battery icon indicating slow charge. I don't know if it's the adapter or usb cable which is causing this, but I tried a set of new charger and cable ( Sony brand ) and still I get the red cross.
What do you advise me to do?
Do i install an app from the store to check if my battery is causing this or do I need to try charging it with a new original adapter and usb cable?
Thank you and awaiting your reply.

The red cross only indicates that the tab is not recieving enough power and even if energy is coming in, it is not enough to charge while using. Understanding this, anything can be cause for the current not being enough:
The adapter could be damaged.
The adapter you are using is not the samsung one and thus is giving less Amperes(Out tab needs 2A and most adapters give 850A-1A).
The cable is damaged.
The cable you are using is not prepared to transport 2A.(This happens to me with the chromecast ones)
The microUSB port on the tablet is damaged. An indicator may be the tablet overheating like crazy when charging but this is not probably because when this happens the device, in most cases, takes energy or not.
I personally find that the cable, if you are using samsung's adapter, is most commonly the problem. Using a cheap cable or a damage cable causes this for most of the tabs I have known.
Hope this helps.

Pazzu510 said:
The red cross only indicates that the tab is not recieving enough power and even if energy is coming in, it is not enough to charge while using. Understanding this, anything can be cause for the current not being enough:
The adapter could be damaged.
The adapter you are using is not the samsung one and thus is giving less Amperes(Out tab needs 2A and most adapters give 850A-1A).
The cable is damaged.
The cable you are using is not prepared to transport 2A.(This happens to me with the chromecast ones)
The microUSB port on the tablet is damaged. An indicator may be the tablet overheating like crazy when charging but this is not probably because when this happens the device, in most cases, takes energy or not.
I personally find that the cable, if you are using samsung's adapter, is most commonly the problem. Using a cheap cable or a damage cable causes this for most of the tabs I have known.
Hope this helps.
Click to expand...
Click to collapse
Thanks for replying mate, actually I'm using both original samsung adapter and cable which came in the box.. I will be heading to some shops looking for a Samsung cable and see whether it resolves the problem or not.. What is weird is that sometimes it has the red cross and sometimes it doesn't. Yesterday evening it was slow charging and this evening it was normal charging.

nayazdragneel said:
Thanks for replying mate, actually I'm using both original samsung adapter and cable which came in the box.. I will be heading to some shops looking for a Samsung cable and see whether it resolves the problem or not.. What is weird is that sometimes it has the red cross and sometimes it doesn't. Yesterday evening it was slow charging and this evening it was normal charging.
Click to expand...
Click to collapse
It happened to my brother, he changed cables and changed from light socket and he said he had no more problems; he also may have cleaned the usb that goes into the adapter; ol' "blowing nes carthige" style. I would recommend getting a Q-Tip with alcohol and cleaning every metal part you see in your cables, speacially the 4 metal bands inside the male and female usb port from the adapter and the cable(remember to let it dry before pluggin it again).
BTW, it must be a good cable but it is not necessary for it to be a samsung one. If you have a good phone around and can use that cable, it should be fine(I use a motorola defy one which had a 850mA adapter and it works marvelously; "meh" cellphone but the accesories are darn good), just dont use other adapters because of the Amperage difference.
Also, if you are using any kind of extensions, specially usb port extensions, don't. They are a sure culprit of the problem you are experiencing. I dont know why but these cheap electronics really affect the energy passing through; maybe its the cheap copper or bad solder.

@Pazzu510 "Blowing nes Cartridge style" - Aaaahhh good old days
Sent via Note 10.1 2014 Edition on Tapatalk

Tablet burning out chargers?

Is it possible for the Nexus 7 to burn out chargers and cables? I've never known of a device to do this but my daughter's tablet has burned through at least chargers and cables in about the past six months. Each time the charger stops working on her tablet, it also no longer chargers any other Android device. I'm not quite sure what's going on here.

macschwag14 said:
Is it possible for the Nexus 7 to burn out chargers and cables? I've never known of a device to do this but my daughter's tablet has burned through at least chargers and cables in about the past six months. Each time the charger stops working on her tablet, it also no longer chargers any other Android device. I'm not quite sure what's going on here.
Click to expand...
Click to collapse
A permanent N7 fault can damage poorly designed chargers but not cables. As the problem is intermittent and both cables and chargers fail, it is most likely that N7 is used while being charged. Constant bending and twisting results in a cable short circuit which also damages the charger.

Might also be a short in the mini USB connector on the tablet.
You might want to try wireless charging and avoid using the port entirely.

ssenemosewa said:
Might also be a short in the mini USB connector on the tablet
Click to expand...
Click to collapse
It is actually a micro USB connector - what could be occasionally shorting there? But more importantly, is it possible for a short in the connector to repeatedly burn out USB cables (the OP's question)?
Let's check it out. I experimented on the weakest USB cable I could find - from a wired mouse, which is very thin because normally it needs to carry only a few mA of power supply current. I cut a single wire strand from the red, power, multi-strand cable (#1) and connected it to a regulated 3A power supply (#2). At 2A it was slightly warm, at 3A it was warm (#3). I suppose it would burn out at 5A and let's assume that 2A is the max safe current. As the red wire has 7 strands, then the max safe current is 14A and projected burn out current is 35A.
The 2m long cable has power path resistance of around 1ohm, so the max possible current from a 5V source is only 5A - well below the safe limit. A 1m long cable, shorted at the N7 USB connector could deliver max 10A - still below the safe, really conservative 14A cable limit. And we are talking about a lousy USB cable from a wired mouse - you can double the limits for quality USB power cables.
Can you see the implications? It does not matter how powerful the charger is because the cable's internal resistance prevents it from burning out - EVER (@5V of course).
Can you imagine what 10A current could do to a shorted N7 connector? The heat and smoke would surely be reported by the OP.
Finally, the original N7 charger delivers below 2A and most cheap replacements below 1A anyway.

k23m said:
It is actually a micro USB connector
Click to expand...
Click to collapse
True. My bad. Was typing quickly.
k23m said:
what could be occasionally shorting there? But more importantly, is it possible for a short in the connector to repeatedly burn out USB cables (the OP's question)?
Click to expand...
Click to collapse
Actually, the OP's question was "Is it possible for the Nexus 7 to burn out chargers and cables?"
Your analysis of the heating of USB cables, while interesting, isn't really applicable here. I'm betting that it's the chargers that are being overloaded and burned out. I'm also betting that the connector on the tablet is damaged and might be damaging the connector of any cable pushed into it.
k23m said:
what could be occasionally shorting there?
Click to expand...
Click to collapse
I had this exact problem with a Lenovo tablet. The pins on the connector got bent out of shape and burned up several chargers until I discovered it. I messed up the connectors on a few cables as well.
That's why I specifically searched for and purchased a tablet that offers wireless charging capability. Those Micro USB connectors are quite fragile and easy to break. The less use they get, the better.

I've charged my nexus 7 wirelessly since day one. Wireless chargers can be found for cheap, certainly cheaper than the combined cost of your burned out cables.
In my two years of owning the tablet, I've physically plugged it in maybe three times. Usually if I'm traveling and didn't feel like packing the wireless charger and opted to just use my phone charger instead.

Battery and wireless charging option

I need to change my battery which is not a problem but while there I'd like to know if someone is aware of an option to upgrade my Z1 into wireless charging capable. I saw few options that are external using the micro usb but that doesn't tease me. Something like a replacement battery already made with the coil or something in parallel with a piggyback connector.

What about finding a coil that fits inside above the battery and solder the two cables to the micro usb port on the motherboard. Pin 1 vcc and 4 for identification. Or its pin 4 or 5 cant remember.
Do not solder directly to the battery. Batteries do have their circuit protection but i strongly recommend to also use the phones charge protection ie using the micro usb pins.

Charging issue

I have gs9, original usb type-c cable and charger. I found that cable can charge my phone just from one side not both sides despite it is type-c . How can find what the issue is? How can i fix it?
I checked another original cable+ charger, the problem is same as mentioned above. Just one side which is the same in two cables can charge my phone.

molimo said:
I have gs9, original usb type-c cable and charger. I found that cable can charge my phone just from one side not both sides despite it is type-c . How can find what the issue is? How can i fix it?
I checked another original cable+ charger, the problem is same as mentioned above. Just one side which is the same in two cables can charge my phone.
Click to expand...
Click to collapse
I had the same problem with my headphones once...turned out to be bad soldering on the usb type c port of my headphone (it was a charging and data port for new firmware) and had them replaced so maybe you can get your phone replaced too

If you have had your device for less than 14 days then I would recommend that you take it back to the retailer for a replacement. Otherwise take it to a Samsung Service Center for repairs.