yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Q&A, Help & Troubleshooting] Lanchon:
you mean 10 or 500 ohm depending on the multimeter wire polarity?

if that is correct and the unit is correct (ie: not kilohm or megohm), then your device is dying. im surprised it even turns on at all. very soon it wont.

also battery life should be terrible in your phone. and if you charge the battery and turn off the phone and leave it still for some time, the battery should mysteriously discharge.

the capacitors in your device are dying. they are shorting the supply. the more they short, the hotter they get, and they cook, and they age fast, and they short even more. its a positive feedback failure mode.

the good news is that 90% of the time it is a specific capacitor. and it can be removed and the phone keeps on working.

please confirm the diagnostics and tell me if you want to attempt fixing the issue.

fyi: a healthy phone should show open circuit (infinite resistance).
[Galaxy S II Q&A, Help & Troubleshooting] bersem:
Yes your are at all points right. Great remote Diagnostics, your are technical Doctor :D :good:

Yes that are Ohm not Kilo ore else. Yes I changed the polarity by multimeter ( reverted pins + - ) Pins and that value are 480-500 Ohm on normal mesaure - + polarity are 10 Ohm.

Yes also my S2 I9100 has terrible battery life. Discharging over night about 20% or more mysteriously and heating up on long use under the back camera...

Any solution and witch capacitors are affected ? Can i change it ?

Gesendet von meinem GT-I9100
[Galaxy S II Q&A, Help & Troubleshooting] keithross39:
Your description of heating around the camera makes it sound like the power IC.

This is a fairly common issue on the S2.

It is a very small surface mounted 'chip' and unless you have the specialist equipment necessary, it is going to be virtually impossible to correctly remove and replace.......

http://i.imgur.com/rVnFwJM.jpg
[Galaxy S II Q&A, Help & Troubleshooting] Lanchon:
heating up on long use is normal.

the bad capacitors heat up. but because they are not designed to build heat, they have no way of dissipating it either, so you can't feel it from the outside.

there is NO GUARANTEE WHATSOEVER, but most of the time the culprit is this capacitor:

so if you dare, you can remove this capacitor. there is NO NEED to replace it, just remove it. the phone works fine without it.

to remove it: put a very small blob of solder on top of the cap, so that the solder touches BOTH metallic ends of the cap. generously heat this blob (heat has to reach the joints with the motherboard) and immediately try to pry the cap, maybe with the tip of a sharp cutter or knife. note that it might be held in place by a little adhesive. or if you are lucky, it will just stick the the tip of the soldering iron.

DONT PRY THE CAP UNLESS THE SOLDER IS MELTED or you will damage the motherboard!!

after removal, retest resistance between pins 2 and 4. if resistance increased to near-infinite (open circuit), then congrats, you fixed the phone!!!

BUT...

before putting it back together, check the state of the coin battery. it is here:

i recommend that YOU REMOVE IT. this cell leaks and ends up killing the wifi adapter, and finally the complete phone. so better take it out before it does that. if it has already leaked, then YOU MUST REMOVE IT. the only purpose of the cell is to keep the clock running when the phone is off and the main battery is removed. this is completely unnecessary nowadays, as android now synchronizes time from the internet.

to remove it: you'll have to cut the battery connections WITHOUT PRYING THEM FROM THE BOARD, OR YOU CAN DAMAGE THE BOARD.

also: if it has leaked, get some alcohol (isopropylic or ethanol) and an old toothbush and gently scrub the corrosion off. DISCARD THE TOOTHBRUSH AFTERWARDS.

FINALLY...

if the cell has leaked, you cant try removing and cleaning the cell first and then checking the resistance between pins 2 and 4. if near-infinite (problem fixed) then you don't need to remove the capacitor. (but i don't think this will happen.)

good luck!!! :)
[Galaxy S II Q&A, Help & Troubleshooting] Lanchon:
from what i've heard, the power IC does not cause partial shorting of the battery input when the phone is powered off. this is instead compatible with capacitor failure hypothesis. am i wrong about this?
[Galaxy S II Q&A, Help & Troubleshooting] keithross39:
No...I'd have to agree with your shorting capacitor idea....it ties in with what I know of electronics....The only reason I mentioned the power ic is because the heating symptoms the OP mentioned tie in with that too.....let's face it, the electronics in our S2's are beginning to age, and things like these will begin to fail with greater regularity.....

It *could* be that a failure in one component of the device has created a cascade effect of higher than normal operating stress in other components.

The capacitor would be a good place to start rectifying the issue.....but if by chance, that is not the solution, the power ic remains a potential culprit.

http://i.imgur.com/rVnFwJM.jpg
[Galaxy S II Q&A, Help & Troubleshooting] bersem:
Here I am again,

Removed the leaked battery and cleaned after also removed one capacitor ( marked on the picture ) the resistance between Pin 2 and 4 are same... :( :(

Now run phone without battery..

Any other solution ?

Gesendet von meinem GT-I9100

---------- Post added at 03:47 PM ---------- Previous post was at 03:42 PM ----------

Thank you but that are mission impossible.. :D

Gesendet von meinem GT-I9100
[Galaxy S II Q&A, Help & Troubleshooting] keithross39:
Yeah...attempting to swap out that chip is something I would *not* advise you try...

http://i.imgur.com/rVnFwJM.jpg
[Galaxy S II Q&A, Help & Troubleshooting] 3l3ctr0:
I just found this thread and I am very interested, since I hardly get 1 1/2 hours of Screen On Time, I suspect my phone is also suffering from a hardware problem. So I quickly checked the input resistance on pin 2 and 4, and I got 16M Ohm, with correct polarity, and roughly 7k with inverted polarity. But I guess these numbers do not give me any hint that there is indeed a hardware problem.

Actually, I am wondering, where do you guys have these information from, that its very often this very capacitor Lanchon described, or that there is a problem with the power IC?
[Galaxy S II Q&A, Help & Troubleshooting] Lanchon:
on the internet somewhere. i've fixed several i9100 that were misbehaving or not turning on at all by removing that cap. i've also removed leaking batts but before they did any damage.
[Galaxy S II Q&A, Help & Troubleshooting] Lanchon:
hey i'm sorry that didn't work. that's the only easy fix i know of and has worked for me several times, sorry it didn't for you. i'm afraid your phone will continue to deteriorate and eventually fail completely. in asia's ebay-like sites there are supposedly working i9100 boards for 20 USD or less. if i were you i'd start looking for a G2 or G3 in the USA (t-mobile or at&t). sometimes you can find them new and unlocked, the G3 for 200, the G2 for much less. ABSOLUTELY LOOK FOR T-MO VERSION, as it is the one that has unlocked bootloader. the at&t versions i've seen have security holes in the bootloader you can exploit though. they have been patched, but the phones AFAIK accept bootloader downgrades, so it is a matter of turning back the clock and exploit. there are also china ebay sellers that ship internationally if you want to take the risk. some ebay sellers that advertise selling 'new' actually sell refurbs, so be careful. i suggest you create alerts at sleakdeals for what you are looking for. also check that site for past offers and discussions of ebay sellers and the products that they have shipped in the past. sorry i can't help you more.
[Galaxy S II Q&A, Help & Troubleshooting] bersem:
it is ok Lanchon.. thank you for your help :good: to try fix this phone, i will seen what i do next, to buy another old S2 or to replace the mainboard..

also thanks goes to [MENTION=4806698]keithross39[/MENTION]

p.s: also for test i have tested an old s1 that i have the resistence between pin 1 and 4 on reverted polarity is 0..

no luck this time, but it is ok

regards to you and have a nice day - good night
[Galaxy S II Q&A, Help & Troubleshooting] 3l3ctr0:
[MENTION=4141005]Lanchon[/MENTION]

Interesting to know that you actually were able to repair some phones. So I guess the purpose of this cap is to stabilize the power supply against switching peaks. I suppose they caused a short circuit on the phones that were malfunctioning? [MENTION=5677277]bersem[/MENTION]:

It depends on what you are trying to achieve:

Would you like to fix your phone, because you enjoy repairing things? Then you could try to search for another short circuited capacitor on your phone and remove it. But then again, I dont think this is really the root of your problem, since a shorted cap should cause your phone not to turn on at all, am I right? And even if its the problem, I dont think you will be able to find the right cap causing the problem, since there are probably quite many. To be honest, these are just theoretical thoughts, luckiIy I never had to repair my phone.

If you just want to have a working phone, do what Lanchon suggested. I would probably go with this solution.
[Galaxy S II Q&A, Help & Troubleshooting] Lanchon:
yes, i fixed several. only one phone with a leaky battery input was not fixed by removing the cap (there was no change in impedance).

well, yes but not exactly; this is not a digital decoupling cap. this cap is placed directly on the battery bus i think, not any regulated supply. it is right beside a maxim chip, a dc/dc step-up converter, that is used to power the USB connector when in host mode (provides 5V to the outside world) from the 3.7V Li-ion battery. this is strong indication that it decouples the input to the dc/dc.

with the cap removed, host mode and the dc/dc keep on working in the devices i've tested. but presumably, if you load the 5V output heavily, i guess you could expect trouble.

this cap is big, one of the biggest on the board, and maybe the strong inrush current when installing a battery exceeds its current rating and kills it over time. or maybe it is just chemically defective. for whatever reason, these caps fail and progressively short the battery bus.

removing other caps is NOT an option. the others are bypassing digital circuits and are necessary. and also, there hasn't been reports of them being prone to failure. it's just this one that kills many i9100s.
[Galaxy S II Q&A, Help & Troubleshooting] 3l3ctr0:
Ah okay I see, thanks for the explanation. Its probably there to filter harmonics of the input current, caused by the switching of the dc/dc converter, right?

But I had expected the output cap of the dc/dc converter to be even bigger than this cap at the input?
[Galaxy S II Q&A, Help & Troubleshooting] bersem:
i will only a "fully" working phone nothing else... yes you are right i think also there are to many bad caps ( shorted ) and it is impossible to find it all and the risk is to high to damage the phone.. and also is very possible that the bad caps are not only my problem..

i have two others phones but this one is that i like..

so no luck this time...

regards
[Galaxy S II Q&A, Help & Troubleshooting] Lanchon:
yes. so this cap is supposedly directly on the battery bus, ie at the input of the dc/dc.
[G4 Q&A, Help & Troubleshooting] danieldp1990:
I had the H815P version of G4 and when trying to instal a H815 firmware version, some firmware bring me a warning window when starting and others not.

Now I bought a new H815 international G4... My question is: I can install any of the H815 firmwares available, and I wont have the warning windows again?
[Galaxy S 4 Mini Q&A, Help & Troubleshooting] DarkJoker360:
Hello I want to buy a new phone.

But i don' t now, my galaxy s4 mini is very good and I' m sorry to change this phone.

Can you suggest me to buy a phone with budget 250€/300€ or to hold my phone I9195(It have 2 years)?

Inviato dal mio GT-I9195 utilizzando Tapatalk
[Galaxy S 4 Mini Q&A, Help & Troubleshooting] DarkJoker360:
Thread closed because I have decided to hold my S4 mini ???

Inviato dal mio GT-I9195 utilizzando Tapatalk
[Verizon Motorola Droid Turbo Q&A, Help & Troublesh] lukappaseidue:
Hi everybody,

I have been an entustiast DROID TURBO ballistic edition owner, but this last weeks I ma having an importang issue that I am not able to fix. I hope somebody can help me.

First of all I am bootloader unlocked and rooted.

I have been using from the beginning the very good CF rom, but now I had to return stock (hopeing to fix, but no luck).

I try to explane what's happening.

Sometime, when my phone rings and I answer, from the otherside, but me too ear nothing, my phone is totally mute.

Sometime, when I place a call, i do not ear "free tone" for outcoming calls, and my phone is mute; If I recall the same number, the people listening me say "why you don't speak? You phone was mute!).

This is with stock 5.1 and with latest CF130 non verizon user too.

Please, help me.

I am with H3G operator and it appens , on UMTS or LTE band
[Verizon Motorola Droid Turbo Q&A, Help & Troublesh] jalal-jap:
i have same problem.

i open my turbo, just clean mic port on motherboard .

worked.

some one install ressurection rom to solved problem.

sorry for my eng.
[Verizon Motorola Droid Turbo Q&A, Help & Troublesh] lukappaseidue:
Thank you for your reply.

This issue is random: Not all calls (receiving/making) have this issue.
[Galaxy Tab S Q&A, Help & Troubleshooting] knder:
I bought a Galaxy Tab S (SMT807A) and it has a custom ROM on it that doesn't let me access the settings (can't even restore the tablet with the volume button + home method).
[Galaxy Tab S Q&A, Help & Troubleshooting] ashyx:
It can't have a custom rom. It has a locked bootloader. Are you sure it's not in restricted mode?

Boot to recovery and factory reset.
[Honor 5X Questions & Answers] mrdogeybags:
So I have a problem with my Honor 5x (KIW-L24) after doing an ota update with twrp (silly me). So I tried options already suggested on these forums, like getting back into twrp and fixing my stock rom, but the problem is, for some reason I don't have twrp anymore. I've been trying to get into fastboot to fix this mess via the platform tools, but the only interfaces I'm able to access are the broken "Honor for the Brave" boot logo and an EMUI logo that's stuck at 0% saying "Huawei software installing DO NOT unplug usb or press any key!" which I assume is the stock recovery which replaced twrp. Is there any way I could access the fastboot menu or am I out of luck?

Edit: Found this post that fixed my issue: http://xdaforums.com/showpost.php?p=66528466&postcount=7
[Honor 5X Questions & Answers] clsA:
the bootloader screen is white and says fastboot on it

unplug the phone / power off / hold volume + and volume - and power you should get to stock recovery and you can choose to boot to the bootloader

If the OTA is on your ext_sdcard remove it before trying to boot recovery
[MDA II, XDA II, 2060 ROM Development] HonkBB:
Hi folks,

I'm not sure, if this described method will work with a Himalaya too:

http://xdaforums.com/showthread.php?t=284006

Did someone test these steps - is it the right way ?

Btw. i've deleted the extRom with DocTool .. will it become a problem ?

Thanks

HonkBB
[MDA II, XDA II, 2060 ROM Development] Rudegar:
http://xdaforums.com/showthread.php?t=265491&highlight=splash
[MDA II, XDA II, 2060 ROM Development] HonkBB:
...

Hi,

thanks for you answer, but I wasn't looking for Theme-Creation for Windows (that's what I saw in the threads).

I meant the first Boot-Splashscreens which are burned into ROM. 'Cause I got an MDAII the first 2 Splashscreens are that ugly T-Com stuff, which I want to change.

The Thread I mentioned was about Tools for Creating .nb Files and I was interested, if this would work with a himalaya too.

So long

HonkBB
[MDA II, XDA II, 2060 ROM Development] Rudegar:
the first line in the thread is

"Helo

How can I chacnge splash image in WM5 version"
[MDA II, XDA II, 2060 ROM Development] HonkBB:
found

Hi guys,

found what I was looking for

http://xdaforums.com/showthread.php?t=238217

http://xdaforums.com/showthread.php?t=220799

But doesn't work .. guess 'cause I deleted the extRom

So long

HonkBB
[Xperia Z General] Karan Balani:
NOTE: THIS IS MY FIRST POST ON XDA, HOPE YOU WILL ENJOY :o

NOTE: ALL THE FILES ARE ACTUALLY NOT MINE, AND ALSO I DONT KNOW WHO THEY BELONG, THIS POST IS ONLY FOR TUTORIAL

THIS TUTORIAL WILL SURELY WORK ON XPERIA Z C6602(MY DEVICE), IF YOU FOLLOW THE STEPS CORRECTLY ;)

DISCLAIMER: I AM NOT RESPONSIBLE FOR ANY MISHAPPENING TO YOUR PHONE AND YOUR HEART :p

THIS TUTORIAL WILL HELP YOU TO GET ROOT USING KINGROOT AND THEN REPLACING KINGROOT WITH OUR BELOVED SUPERSU :laugh:

1. FIRST OF YOU WILL NEED KINGROOT APP. (LATEST ONE WILL BE BETTER)

(as I am a new user, I am not allowed to post outside links, so plz find uself on google)(its easily available)

2. INSTALL IT ON UR DEVICE.

3. OPEN AND LET IT BE PROCCESSED.

4. TAP ON "START ROOT", MAKE SURE YOUR DATA IS ON.

5. LET IT BE FINISHED, SOMETIMES IT FAILS BUT DONT WORRY TRY AGAIN, IT WILL WORK.

6. AFTER COMPLETION, DOWNLOAD "ROOT CHECKER BASIC" APP FROM PLAYSTORE(ITS FREE).

7. GET YOUR SUCCESS RESULT. :fingers-crossed::good:

8. NOW, IN ORDER TO GET "KINGROOT" REPLACED WITH "SUPERSU", DOWNLOAD

----> TERMINAL EMULATOR APP (FREE)(PLAYSTORE)

---->ATTACHED FILE(S)

9. UNZIP THE ATTACHED FILE INTO YOUR INTERNAL MEMORY(NOT IN ANY FOLDER).

10. OPEN TERMINAL EMULATOR APP

---->TYPE

su

---->GRANT PERMISSIONS

---->TYPE

sh /sdcard/mrw/root.sh

11. LET IT BE FINISHED. (DONT WORRY IF PHONE HANGS OR LAGS OR RESTARTS, DO A MANUAL RESTAR)

12. AFTER THIS UPDATE SUPERSU BINARIES USING NORMAL MODE(PREFFERED).

13. REBOOT ON SUCCESS, UNINSTALL KINGROOT IF ITS NOT GONE AUTOMATICALLY.

14. DONE, CHECK YOUR ROOTING RESULT USING ROOT CHECKER APP.

:good::good::good:

ALL THE VERY BEST...

YOU CAN ALSO GET THIS TUTORIAL IN THE FORM OF SEQUENCED IMAGES(BETTER TO UNDERSTAND), DOWNLOAD IMAGES ZIP FOR THAT. ;)

IF YOU LIKE MY WORK PLZ DO NOT FORGET TO PRESS THANKS BUTTON, IT WILL NOT COST YOU MORE THAN YOUR HAPPINESS

NOTE: AS I AM A NEW USER, I CANT SHARE LINKS, PLEASE COPPY THE URL AND ADD "h" TO HTTPS :p

FILES:

----> ZIP ttps://drive.google.com/open?id=0B6JGe-_gG3ftX2JJU1pWd2xobDg

---->IMAGES ttps://drive.google.com/open?id=0B6JGe-_gG3ftazBsRHBsQ3E5dFU

AN IMPORTANT NOTICE.

This is only for stock.

It will not work on other custom roms.

A guy commented on the post, after trying this method on existence rom.

See below.

Anyways this method I personally tested by me, it works fine. :good:
[Xperia Z General] indycar:
http://xdaforums.com/xperia-z/general/super-su-xperia-device-lollipop-easy-t3119006

http://xdaforums.com/xperia-z/general/guide-how-to-root-xperia-z-android-5-0-t3151618

you really had to make new thread bout it ?
[Xperia Z General] Karan Balani:
Dear

The method of using "supersume", doesn't work surely. I tried it personally.

And the other link u provided is for replacing kingroot with supersu only.

I made this thread for people to get the whole procedure at the same place, no need to Google more.

Hope you understand ?

And ur question is really appreciated ?
[Xperia Z General] Natschlaus:
Doesn't work for me. Did everything exactly like you said, but trying to update supersu binaries didnt work.

I then rebooted and got a soft brick until I wipe dalvik and cache from recovery.
[Xperia Z General] Karan Balani:
Bro now tell me, is that problem still exists.

If yes.

U can just flash system using Twrp backup.

And then follow the procedure again but with a new version of kingroot.

Bro this method is personally used by myself, and always works for me. You can check the images.zip file. That is my own phone.

No fake things, my only motive.

????
[Xperia Z General] Natschlaus:
What do you mean does it still exist. I literally just tried it yesterday.

I used the newest version of Kingroot and still that happened, but then again I dont use stock rom so that is probably interfering with it.

I probably just stick with Kingroot, it doesnt seem so bad.
[Xperia Z General] Karan Balani:
As u wish bro.

And u can stick to kingroot.

Happy root to u btw.

And being an xz user, u can join WhatsApp group for xz, there u can find the solution (same as above, many people did like this only)

Or find another thread.

????
[Xperia Z General] dj.adil:
Tried this method. The phone was stuck at the bootanimation. I forced restart it and now it is stuck at the App Optimization page.

C6002, 5.1.1, Bootloader Locked, Completely Stock. Any help?
[Xperia Z General] Karan Balani:
Bro try to wipe dalvik cache in twrp. Otherwise the method is sure shot.

If the problem still persits then tell me how you did, i will try to simukate the same to find best solution as possible.

Thanks
[Galaxy S 5 Q&A, Help & Troubleshooting] crane101:
Whilst trying to trick my S5 into charging via the wireless charging pins I've managed to accidentally reverse the polarity of the leads. The phone now won't get past the boot up screen and is stuck in a boot loop. Also won't start in recovery mode.....

It's a long story, am working away from home, usb port broke this morning....blah blah blah....tried a short cut and now looks like I've destroyed the phone ;-(

Any ideas guys?

Thanks

Andy
[Galaxy S 5 Q&A, Help & Troubleshooting] *Detection*:
Does it boot into download mode?

Volume Down & Home & Power

If yes, flash another stock ROM with ODIN from sammobile
[Galaxy S 4 Q&A, Help & Troubleshooting] PumpyLee:
Hello. I want to start off and say that even tho i used a lot of phones Samsung fits me bets. With that in mind i want to tell the story of my broken s4 i9505. I bought it new and used it about 2 years until i got and iphone 5s. The phone remaind in a drawer with the intention of selling some time but forgot about it, then i used the phone once a week or so paired with moto 360 because iphone could not connect and used the watch only for time .(bluetooth worked fine remember this). Anyway i decided to sell it and i had all my apps and accounts in there so i thought the fastest way was to factory reset it and make it fresh so i can sell it (rom was not stock at the moment, i have no ideea what rom it was). I sold it to a friend that told me he wanted to pair something with it thru bluetooth and bluetooth didnt work...i sayd that it wasnt possible because all i did was a factory reset and that couldn't damage anything. Things got worse as the phone was charging very very slow and if it got over 90% baterry would not respond to anything (red led at 90% and got to green when full but still no response from phone) and the only thing to do is to remove battery. Then i took the phone back, got it a new battery but that didn't changed anything, took it to some repairs shops that didn't ever hear about this problem, i had it chance the software but that didn't do anything. The problem i suspect it is and i saw a few other posts online was the bluetooth module would stop working for some reason and do this to the phone. Currently i don't know what to do with it and i don't want to sell it just for part for 50 euros or so. Also i read that the bluetooth module can't really be changed as a spare part because it's part of the motherboard and that means almost all the phone. Phone is in mint condition, i didn't damage it before the sell , the buyer didn't damage it or messed with the rom...Another thing i noticed is that in settings under bluetooth address says unavailable. Can someone please help me ? I can provide more information about serials and stuff if needed. Also wi-fi doesn't work now.
[Galaxy S 4 Q&A, Help & Troubleshooting] Rhoban:
Mine also show unavailable under Bluetooth address, but it works.

Are you currently on the stock rom?
[Galaxy S 4 Q&A, Help & Troubleshooting] PumpyLee:
Yes is stock. Android version 5.0.1 I9505XXUHOJ2. If i toggle bluetooth on says starting bluetooth then after 5 seconds it disables. I guess the problem is from hardware not software. So fast battery drain is not normal something is using a lot of energy.