Help: Always booting to Download Mode - Galaxy Tab 7.7 General

I've got a strange problem with my Tab where it insists on booting into download mode. It says factory mode in the top left rather than odin mode.
The only ways I've found to get around it is either plugging into a computer and flashing something with Odin, either a full rom or just recovery. Then it seems to boot ok. The other way seems quite strange, I just plug in the USB host adapter (without anything plugged into the USB port) and hold the power button till it reboots, then it boots up ok.
The other problem though is that the USB host no longer works when it's booted.
I actually took it back to the shop where I bought it, demonstrated the problem to the shop staff, they sent it away to get look at and by the time the technicians looked at it a week later it was working fine. When they gave it back I even tested the USB host was working and that was fine too. But after a couple days it has started doing it again.
Any ideas what the problem could be? Initially I suspected a faulty plug on the bottom of the unit since that was the only way I could make sense of the USB host adapter making it boot. I'm still thinking it's either that and when they plugged it in to look at it it reconnected a dry joint or something - or that the battery went flat and that reset whatever is causing this.
I'll take it back to the shop again if I have to, but don't fancy another week without my phone, especially if the same thing happens again.

I had a similar problem and I fixed it by letting the battery go flat and doing a factory reset after it re-booted normally.

Related

Bell Vogue keeps rebooting

Hi everyone,
I have had some trouble with my Vogue. At first it simply would not turn on. I would get a red light when I plugged the phone in to charge it. I have been using my old phone for several months now. Today I went out to the nearest Bell store and it seems like anything new is going to cost in the $500 area because I still have 1 year left on my contract. So I have renewed my interest in getting my Vogue working again
The original thread describing my original problem (with the red light) is here:
http://forum.xda-developers.com/showthread.php?t=546674
I purchased a new battery and now when I plug it in on the USB I can turn it on (no lights, red, green, or otherwise) but it does turn on. It boots up just passed the blue “Bell” splash screen and then reboots. It does this over and over again.
I am able to get into the boot loader screen by holding down the power and camera buttons and pressing the reset button.
Any ideas on what I can do? Any suggestions are welcome.
Regards,
The Fish
Reflash your rom when you get to the bootloader screen.
If you are unlocked flash nfsfan or whatever, just rename the nbh file to 'VOGUIMG.nbh' and it will flash.
If you were on stock you'll need the nbh from the stock package.
OK, here is an update
I have tried a hard-reset (press Send and End buttons at the same time and press reset button). This worked but the phone still kept rebooting. Tried the original battery, phone booted a little further up before rebooting.
I got the phone into boot loader mode and left it plugged in on the USB cable for a few minutes. This time when I rebooted I became ecstatic. I got all the way to the “align your screen” stage before hearing the “phone is dying” sound and the phone turned off. So here is what I think may have happened:
I have long lost the home charger kit. So I have, for as long as I can remember, been charging it by plugging it into a PC via the USB. This is fine except that Windows will only power the USB for the device if there is a driver installed. The device/phone looks different to Windows when it is in boot loader mode then when it is fully booted up. If the device is so dead as to not even have a flicker of life I don't think Windows sees it.
I have been doing this tonight under Linux. Linux seems to either have the driver, a more generic driver or powers the USB all the time for any device. I noticed this same behavior when charging my Moto Razr the same way. Under Linux it just worked by plugging it in. Under Widows I had to install the driver. So maybe here is what happened.
The battery got SO dead that it was not able to boot the phone up far enough for Windows on the PC to see it, recognize it and begin powering the USB port. Perhaps leaving the phone in bootloader mode and plugged into a Linux box got the battery a little more charged till I got to the point of being able to align the screen.
Anyway, I am more then ever convinced that this is some kind of battery/power issue. The phone is now lying here powered up and charging (already at 20%). The carrier customizations ran, rebooted while I crossed my fingers, and came back up. I even called *BELL and got a message about activating my phone. Tomorrow if the phone is charged up and behaving normally I will get an ESN change done and be back in the world of decent smartphones. Man have I ever missed my Google Maps
The next step is to flash a more up-to-date ROM... if I dare mess with a good thing.
The Fish

USB connected msg when not

I have yet to see this issue reported anywhere so was wondering if anyone was having the same problem.
After having the phone charging in the wall my vibrant has started piping up with a notification that usb has connected even though it's not plugged into anything. Rebooting doesn't seem to help.
Any ideas?
Sent from my SGH-T959 using XDA App
Does that when I charge it in my car. I just ignore it.
Sent from my Samsung Vibrant using the XDA app
Does that with my wall charger but I suspect it is happening bc my puppy chewed on the cord. Didn't get all the way thru though and it still charges fine
Sent from my SGH-T959 using XDA App
My phone has been doing the same thing. Says usb connected when nothing is plugged in. stovk firmware, only rooted. Just happened this morning. Apparently many other people have been having the same problem. Can't seem to find a solution yet. Reboot into recovery and wore cache sill no luck. I heard wiping data doesnt work either.
I'm having the same issue but on the Fascinate. I thought that this was do to the Voodoo lagfix so I removed that but it's still happening.
I'm rooted and have CWM loaded but no other modifications.
For me, the USB notifier keeps popping up every second or so. I can't reboot the phone as it still thinks it's connected and shows a battery symbol that isn't charging and then dims. To complete boot I have to either 1) plug in a powered usb cable or 2) pull the battery.
I've had the battery out for 15 minutes and that usually stops this from happening for a day or so. I have no idea what's causing this but I'm leaning towards this being hardware related. Possibly bad battery? I don't know. I have experienced this in my car too.
Some other thoughts, does this phone react differently to different USB cables? I know it's odd, but when I plug into my wall jack using a generic cable I don't get the notifier at all, when I plug into my car with the Samsung cable, sometimes it appears. Of course, it's more of a problem when it appears when no cable it pushed in and it cycles on and off.
Does anyone with this problem have a spare battery they could try?
That happened to me before. I rebooted and that didn't fix it, so I did a master reset and that cleared it up. It was kind of pain to redo everything, but not too bad.
Someone else posted over at Something awful the following:
Stunt Rock posted:
I had a really fun day with my Vibrant yesterday. Interested in seeing if it repeats today. I was on the phone when it just randomly shut down. I was a little surprised, since it was plugged into the car charger and shouldn't have run out of batteries. Then without me pressing any buttons, it boots itself up. Then over the course of the evening it does the following:
* Repeatedly turn itself on then shut itself down while plugged in.
* Repeatedly display the "USB Connected" dialogue while not connected
* Refuse to recognize USB actually IS connected while plugged in to the computer.
* Randomly turn itself off if not connected to USB
* Automatically turn itself on whenever plugged into the USB port.
* Refuse to turn on if the battery cover isn't attached.
Plus some other stuff I'm probably forgetting. I have no idea what started all this.
This continued in more hilarious fashion yesterday when I took it to the T-Mobile store and the rep couldn't get it to boot (it would just give the spinning wheel for a few seconds). The rep called in for a warrant replacement.
I told him it would get past that screen if plugged in. Sadly, I was going out of town and left my USB charger. So I found out if I blew into the USB charging port right as I pushed the power button it would boot.
I charged it overnight and today it continued the errors (repeatedly USB connected while unplugged, etc). T-Mobile tried to push the JI-6 update again. It bricked my phone, again. I went into Odin and restored it to stock, again.
Then I manually applied the JI6 update via ODIN. Phone has been working flawlessly since then.
Click to expand...
Click to collapse
Maybe coincidental but I just blew into my USB port and the notifier stopped flashing on and off.
Serveral ways to do it and it is actually all over this thread as it appears to be a pretty major issue lately. I also had it on my phone, called tech support and they said it was a known issue and JI6 had the fix. I couldn't get the fix since i was on a third party ROM but was able to find Bionix 1.9.1 that has the JI6 update built in and flashed it and have been without the USB annoyance since. So, to fix you can flash a ROM with the JI6 update built in OR use Odin to flash the JI6 to your phone. For me using Rom Manager is easier than Odin.
Read my thread for a fix that worked for me. Its in Q&A
Sent from my SGH-T959 using XDA App
homerbrew said:
That happened to me before. I rebooted and that didn't fix it, so I did a master reset and that cleared it up. It was kind of pain to redo everything, but not too bad.
Click to expand...
Click to collapse
I've done a Factory Reset before when I went back to stock and that didn't help me.
deez1234 said:
Read my thread for a fix that worked for me. Its in Q&A
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
I suppose this wouldn't be possible for me as I have the Verizon Fascinate. Our update 2.1 - Update 1, DI01 didn't include a USB fix that I'm aware of.
any body have fix usb connected ?
i've done all which is writes around the internernet after reading 400+ web site threads/posts still not able to solve, Please if anybody have done please share with us
thanks
the vibrant seems to do that when you have a cable that is wired for data transfer, the vibrant sometimes gives you the message even when your not connected to a computer, (I.E. connected to the wall) if you use a cable that does not do data transfer (it will specifically say not for data transfer on the package) then it will never pop up. Rocketfish makes one of these type cables, its usually more convenient to just deal with the notification rather than getting a special cable though. I only got the charging cable cause the data transfer cables were pretty expensive at best buy. the power only cables are a bit cheaper.
@firely
i think you don;t know my all story ;-)
actually without connect charger or usb cable i'm not able to turn on my phone,
after on usb connected message appear at left side top,
i want to trade my phone (its brand new like get before 2 weeks)
that's way i want to solve this problem, Phone Should be on without any power connected like usb and charger,
its my story
USB Issue Perhaps Larger Then It Seems
My update on this, no one seems to have presented a solution. Flashes, kernels, etc don't fix. The problem is it incapacitates your phone, as there is no internal SD card mounted since it thinks USB is plugged in. Can't download songs on SD card, can't power on without it plugged in and seeing battery indicator first. Then last night on top of everything, my market showed downloads that I didn't authorize. Strange behavior, I have put bionix, know how to ODIN, etc, but nothing so far has fixed this USB connected / mounted issue and it seems like I have to return this. I'm worried there is a virus associeted with this behavior. I don't download apps that appear dangerous, (sex related, obscure, not without many downloads or robust developer site). I have a friend who has JI6 but has never rooted or modded and around the same time, Halloween his started this too. Power indicator still indicates charging after unplugged, USB connected constantly flashes off and on, battery life is worse. There is soemthing deeper seemingly happening because rebooting, resetting data, wiping dalvik cache, does not give me the basic ability to turn on phone without USB connection. App settings, I say choose on connect. Finally got computer to recognize again as a drive, but inconsistent, tried to reinstall USB drivers on win7. over all really wonky behavior since it powered down while on charger a week or so ago. Sometimes plugging into wall charger gives error. Only way to get it to stop showing USB message was to unmount phone storage, but now I don't even get options to mount or unmount phone storage. love this screen and have loved modding but frustration is sinking in, will try to get tmo to replace with this, but hoping it's not a larger virus related issue, would be scary deal.
hey said it was a known issue and JI6 had the fix
Click to expand...
Click to collapse
I don't think so: I have the rooted JI6 on the phone incl. Clockw.
Yesterday I see also that the USB cable "should" be connected, after I have enable the Debug-Mode, the red Triangle comes too in the status bar.
That's all in the Underground station
A reboot helps on my side.
USB Woes Continue, Phone Meltdown
This is not just a debugging / reboot issue in my case, it is also effecting my friends who doesn't have bionix, just the JI6 build TMO OTA update. THis is a serious bug, perhaps brought on by a virus who knows, but my buddy who has this same problem is now going ballistic and running into the arms of apple. there is no resolution to this issue throughout the forums. Tmo is exchanging with me, and I have installed multiple ROMs, know how to search forums, kernels, ODIN, all that. Now my radio for cellular doesn't turn on and I have to reboot, it just seems pretty hosed at the moment and I find it coincidental that my friends phone (he is a technical design guy) is having the same mounting SD card issue, basically bottom line is, the thing won't turn on without being plugged in and flashing back to stock, different roms, still will not mount the internal SD card, or recognize it in many cases. I have reformatted, cleared davlik cache, most options from recovery, no dice. can't download to SD card, because it always thinks USB is connected, even when the device is turned off. i hope this resent one works fine and I will document the details since this happened for the hard working devs to have details that maybe can be discovered, but the most worrisome part is that it seems like it may be virus related. I hope that's not the case and just odd coincidence. There is no changing USB settings or debugging combinations that will solve this issue in my experience.
sad but hopeful vibrant owner,
jellyculligan
vibrant with stock (after bionix fusion), oc / uv JAC kernel.
I just got this issue as well and nothing has worked for me so i'll be replacing it with a new vibrant but I wont have a phone for about a month! Does anyone know if tmobile rents out phones?
deez1234 said:
Read my thread for a fix that worked for me. Its in Q&A
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
would you happen to have a link to said thread?
Mine does it when I plug into the wall charger. I just went ahead and synced with the house. Now I can turn the lamps on/off from anywhere.

My Galaxy S5 won't start up... (black screen)

Hi everybody
I have a problem with my Galaxy S5 (no custom rom, official)
I normally used my phone, I locked it. But, after about 10 mins I tried to unlock my phone, but nothing happens
I tried to reboot, nothing happens. I tried take out and put the battery - nothing happens. So I searched on Google and tried some keys combinations, but nothing happens. My phone has about 80% battery. I tried to charge it in the charger, but nothing is happening (black screen, no notiffication light). Also I tried to put off my SIM and SD Card, but nothing happens
Do you have some skills in it? Can you help me?
Few days ago, I faced the same problem..
http://forum.xda-developers.com/showthread.php?t=2853472
Then I'd to take it to the Samsumg store.. And they return it back in 2 days and said me it was a software problem..
I wanted to do a recovery reset, but i can't boot my phone anymore, also the Kies doesn't see anything, so. Did you really think that is a software problem? Because my phone won't vibrate at boot. So maybe it can be a hardware prob :/
EDIT: Phone started blinking red light... (nottiffication), I tried to charge it, but nothing...
Mate as mentioned early, same problem I faced..
It'll be better, if you return it to Samsung customer care..
You seem to be saying that the problem occurred unexpectedly. So presumably this isn't subsequent to a flash error, newly installed app or a trauma (dropping the phone, etc).
First ensure that your battery is charged, plug in the phone to a charger as well and try turning it on. If at all possible, borrow a battery from a friend's S5 or go to a store and borrow a battery for 30 seconds to confirm that the battery isn't the issue.
If the problem persists, then remove the cable and battery. Then put the battery back into the phone and press and continue to hold in this order, the volume down key, then menu key, then power key. Hold all three until the screen powers up (about 5 seconds). If this doesn't work.. the most likely problem is a damaged power key - try pressing hard or "wiggling" it to see if that makes a difference.
If you still can't start the phone, then see if a local cellular repair shop has a "jtag jig" that you can borrow. Or you can buy one on Ebay for a few dollars. When this jig is plugged into the USB socket, the phone should automatically restart.
If all of the above fails (which is unlikely), you would seem to have a hardware problem or unknown origin. Which would be very unusual. If your phone is under warranty, make a claim. Otherwise get an estimate to repair it.
.
If I hold all 4 buttons at the same time and connect the phone to PC, PC recognises the phone for a few seconds. Well, maybe not recognises, I cant see it, but it plays the same sound as if connected flash drive to pc. However, everytime it disconnects within a few seconds...
I´m in the same case, but I was flashing the Galaxy S5 with the four files ROM and the pit file using Odin3.09. All the process ended well, but after rebooting there apeared one Screen sayin something like "Some files at this phone are encripted and there can´t be modified......." so I did a manual reboot and take off USB cable and from this moment the phone don´t do anything but giving a sound when I plug USB to computer cable and I can see new COM --> Qualcomm HS-USB QDLoader 9008, and there repeat a loop.
I´m still looking for a solution, but it gives me that there is time to change phone.
Possible Fix
This thread is old but idk if this was ever solved, so in case anyone else ever has an issue like this. My Gf is still rocking this phone so i've had a little experience with it. The phone wont turn on or charge. I got it to work by sticking a flat head screw driver and prying it fairly hard against the bottom of the battery (the side closest to the charge port) and forcing the battery harder against the metal contacts. While pushing the battery I turn on the phone and it starts right up and continues to run even after letting the pressure off. I've noticed this happens every few times i take the battery out, but this method has never failed for me turning the phone back on. Hope someone finds this helpful.
kimo hands said:
This thread is old but idk if this was ever solved, so in case anyone else ever has an issue like this. My Gf is still rocking this phone so i've had a little experience with it. The phone wont turn on or charge. I got it to work by sticking a flat head screw driver and prying it fairly hard against the bottom of the battery (the side closest to the charge port) and forcing the battery harder against the metal contacts. While pushing the battery I turn on the phone and it starts right up and continues to run even after letting the pressure off. I've noticed this happens every few times i take the battery out, but this method has never failed for me turning the phone back on. Hope someone finds this helpful.
Click to expand...
Click to collapse
weird, youd think that bending the tabs out to force contact with the battery better would do the same trick fwif

Constant vibrator repeat when connected to charger - not charging though

My son has an SM N910F note 4. Completely stock. It suddenly stopped charging after a long international flight and now when connected to the charger the battery charging image appears, but then after a brief pause disappears, and the vibrator motor vibrates continuously at 1 sec intervals after that. The phone boots into stock rom OK and also into recovery and fastboot mode.
I have tried different cables (several), 4 different chargers , cleaned the connector on the phone (and cable connectors) with air and alcohol. Contacts seem to be OK on visual inspection. Cables and chargers work fine on other devices including a stock rooted Galaxy S4. Also, purchased a new battery but it did not change any of the above symptoms. When I tried to access the Note 4 from my Linux PC, MTP showed nothing and adb devices and fastboot devices saw nothing lsusb didn't see anything either. Different cables didn't alter this.
One odd thing is that when I boot into recovery I do not see the recovery menu but it immediately reports that it is installing an update and after a minute stops with the "failed to find command " error message. We are unaware of any recent uninstalled OTA updates though. Then the recovery menu reappears.
Can someone suggest for me what might account for these symptoms. I have no idea, but when the device was not visible in my Linux machine I began to suspect a faulty USB/charging port. Trouble is we are running out of battery charge to test anything now and no way of recharging
gc2712 said:
My son has an SM N910F note 4. Completely stock. It suddenly stopped charging after a long international flight and now when connected to the charger the battery charging image appears, but then after a brief pause disappears, and the vibrator motor vibrates continuously at 1 sec intervals after that. The phone boots into stock rom OK and also into recovery and fastboot mode.
I have tried different cables (several), 4 different chargers , cleaned the connector on the phone (and cable connectors) with air and alcohol. Contacts seem to be OK on visual inspection. Cables and chargers work fine on other devices including a stock rooted Galaxy S4. Also, purchased a new battery but it did not change any of the above symptoms. When I tried to access the Note 4 from my Linux PC, MTP showed nothing and adb devices and fastboot devices saw nothing lsusb didn't see anything either. Different cables didn't alter this.
One odd thing is that when I boot into recovery I do not see the recovery menu but it immediately reports that it is installing an update and after a minute stops with the "failed to find command " error message. We are unaware of any recent uninstalled OTA updates though. Then the recovery menu reappears.
Can someone suggest for me what might account for these symptoms. I have no idea, but when the device was not visible in my Linux machine I began to suspect a faulty USB/charging port. Trouble is we are running out of battery charge to test anything now and no way of recharging
Click to expand...
Click to collapse
Can you boot to download (odin ) mode ?
HW failure
Unfutunately, it is a HW problem. You should the USB connector panel.
Search note 4 flex usb on ebay or Ali.
android freek said:
Can you boot to download (odin ) mode ?
Click to expand...
Click to collapse
Yes, I can boot into Odin mode or recovery, but not recognised by laptop. Also, when charger is plugged in the Note 4 will not boot from power button. But as soon as I remove USB cable it will boot. Also, since posting I tried a factory reset and formatted data and cache from recovery. No change though. Still vibrates every 2 secs and will not boot. Battery does not charge at all during this process.
It's still under warranty so I don't want to try the eBay path suggested by Balint320 for repairing it myself at this stage.
Fixed?
Did you get this resolved? Mine is doing the exact same thing since a t-mobile security update. Have tried the master reset twice and clearing the cache. Tried the original charger and several others.
i am having the same problem on n910g, it just stopped charging.I tried everything, from different chargers to a new battery, but no avail.it just vibrates at 1 sec continuously and does not charge at all.
I still have 1 month warranty left but It was rooted and everything so..if there is a way to migrate to fully stock ROM please guide me, so that I can take it to service center.
IronMan_in said:
i am having the same problem on n910g, it just stopped charging.I tried everything, from different chargers to a new battery, but no avail.it just vibrates at 1 sec continuously and does not charge at all.
I still have 1 month warranty left but It was rooted and everything so..if there is a way to migrate to fully stock ROM please guide me, so that I can take it to service center.
Click to expand...
Click to collapse
The only thing I can suggest is, of you are able to get into download mode, is downloading the stock ROM and reinstalling with Odin. Some suggest holding the power button down for a few seconds after removing the battery to make sure that all charge to components is drained before restarting.
Have you tried installing Smartswitch on your PC to see if it detects a problem and is willing to correct it? At least, it will install the correct USB drivers to ensure Odin works fine. Sometimes I think Samsung need a kick in the butt for their slack approach to software reliability and utilities for maintainence and repair. Try just sending it back under warranty anyway if you can't get it to work. Maybe hardware failure. Good luck.

Galaxy s5 won’t boot up

Please can someone help me with a problem I’m having with my Samsung Galaxy s5.
I put my phone on charge before I went to bed and when I woke up it was still showing a red LED. I knew this was wrong because it should have had enough time to charge and turn green. I had not powered the phone off before putting it on charge and I plugged it into the same USB 3.0 charging lead I have been using for the past six months. I unplugged the phone and pressed the power button to light up the lock screen but it didn’t light up.
I’m thinking possibly something has either shorted or over heated and fried something either on the charging port assembly or one of the chips adjacent to the port while the charger was plugged in. It seems like only a trickle of power is getting through to the phone. When I plug a different USB 2 charging cable into the phone, without trying to power on, the charging icon appears but shows no charge at all in the battery.
I have also tried the spare battery I have but it’s still the same. I know the spare battery is 100% fully charged because I store it in a separate charging/storage box which shows a green LED when it is full. In fact the one which was in the phone at the time is also fully charged according to the charging box. Neither battery has got warm at all inside the phone. I’m confident both batteries are fully charged and totally fine and the problem isn’t with the batteries.
At this point I removed my sim card and also the MicroSD card. I needed the sim to use in my spare phone and I wanted to see if the sd card could be causing the issue but after again trying a normal reboot it made no difference.
I’ve tried several possible things I found on google but nothing has worked. Between each different thing I tried I had to remove the battery for 10 seconds and insert it again to get it out of the boot loop so I could try something else.
Initially when I tried booting into safe mode, then recovery mode and then download mode it brought up the screens for those but in each case after a few seconds the phone powered off and went into a boot loop so I couldn’t attempt any recovery options such as clearing cache etc. Now I cannot even get it to start any of those modes at all and all that happens is the phone does a little vibration, displays the Samsung logo and then just boot loops no matter what I try.
I have tried removing the battery and leaving the phone for a few hours then powering on again but it still just loops.
I have tried pressing and holding Vol-down when plugging it into my PC using a different USB 2 cable and windows acknowledged a phone was plugged in but said it couldn’t connect or recognise the phone and suggested the phone could have a fault.
I don't know if maybe my USB 3.0 lead has a fault that could have caused it or if there could have been some electricity spike while the phone was plugged in, or as I said a component has just fried.
I strongly suspect this is a hardware fault and not a software fault but as I’m not a phone engineer I have no idea about how to trace any possible hardware issues or what might have gone wrong. I would really appreciate any help or suggestions about what the problem might be as this has been a great phone for the last 2 years since I got it and I’d be sad to have to junk it and buy a new one.
Thank you.
I would not junk it yet......
You had mentioned that you go through a lot, just to get phone into Recovery ( " Initially when I tried booting into safe mode, then recovery mode and then download mode it brought up the screens for those but in each case after a few seconds the phone powered off and went into a boot loop so I couldn’t attempt any recovery options such as clearing cache etc. Now I cannot even get it to start any of those modes at all and all that happens is the phone does a little vibration, displays the Samsung logo and then just boot loops no matter what I try." )
OK, just my 2 cents here on this... Why not trying to goto Recovery by pressing and holding the Volume Down (vol-); Home button, and The Power button all at the same time. (yes, if you have a Recovery, and its works, you should be able to boot right into Recovery- >Now, (I would, cause I've been there..) I would also have a PC going with Odin open (Plus the Latest Stock Rom) ... If it works, you would flash the Stock ROM, to clean up anything, giving you all stock, but you can change that of course ...then go from there...
Second, if you can not still get to Recovery.... Have you tried a Stock USB Cable, only asking.... Obliviously something is a miss... with Power... IF phone is off, and you plug it to a power source ... then system has power, and these can power up with just the usb cable, without having the battery in..... Been there. Can add the simple fact, if using just a Micro SD cable, they can bend the Power Board. Believe me (Had to fix the Wife's S5 a few Frinkin' times....) That is why, I say using the Stock Cable, or even a USB 3.0 Cable (like the stock one) does help with power issues when the Micro has bent up the power board...
Will check back and see if this may have you to Recovery or fixed... sure hope this can help you out
Thanks for replying godofsalt.
At the time the phone was plugged in to my USB 3 lead which charges faster and all I can think is that perhaps there could be a fault with the lead or the higher ampage of using this lead caused a circuit to burn out.
I have around a dozen USB 2 leads and I've tried your idea with 3 different ones but none of them will fire up the phone at all with the battery taken out.
I am sure this is going to need some kind of replacement either of the charging port or the motherboard. I don't rate my chances of trying to do it myself and I don't think it will be economic to take it to a shop so I've found a better option by buying the same phone which is second hand but in good condition. That way I know I have all the additional accessories already for probably the same price any shop would charge to fix it.
In future I'll stick to using a decent USB 2 lead on the 1 amp charger I used to use before and hopefully this will not occur again.
G500F battery graphic/boot loop
Had the same problem a few days after installing a 9.0 Rom. My battery is brand new and all cables aren't too aged, so I thought this had to be a physical fault of some kind, but then I had the thought to flash an older bootloader and just like that my battery started taking a charge again and I could boot up. Switched to Flyme os for a while the went back to 9.0 again, with the lastest bootloader and the thing stopped working again. Don't know too much, but I'd try and flash a different bootloader to see if there's any difference. My device failed right at the Galaxy logo, then looped the charging graphic endlessly but would strangely go into download mode and not fail. Don't know if this helps, just thought I'd share my solution.
Thanks for replying henderia93.
My symptoms are very slightly different in that the phone couldn't maintain any of the modes I tried for more than a few seconds before going back to the boot loop again so there was no chance of trying any software fixes including flashing the ROM. Now it won't enter any of those modes at all. I'm certain that's due to only a trickle of power getting through to the main board, not enough to maintain any recovery modes, so there is just enough power for it to attempt to boot, but no more so it just keeps looping, most likely caused by something that has blown while on charge.
MarylinC said:
Thanks for replying henderia93.
My symptoms are very slightly different in that the phone couldn't maintain any of the modes I tried for more than a few seconds before going back to the boot loop again so there was no chance of trying any software fixes including flashing the ROM. Now it won't enter any of those modes at all. I'm certain that's due to only a trickle of power getting through to the main board, not enough to maintain any recovery modes, so there is just enough power for it to attempt to boot, but no more so it just keeps looping, most likely caused by something that has blown while on charge.
Click to expand...
Click to collapse
I ha e taken so many of these a part... Like I may have mentioned, there is a Board, just for the USB (data and power (i still have 2 of them)).... In short, you really have to pretty much take the phone a part. Being very careful with the Screen, and the "Sticky" LEDs and the Home button. There is a lot to it actually.
Like I said, been there done that... Cheap to get, takes some time but it is possible to replace that board. It's a separate board different from the actual main CPU board.
I would have to find it, but I had a manual, for taking these a part.
godofsalt said:
I ha e taken so many of these a part... Like I may have mentioned, there is a Board, just for the USB (data and power (i still have 2 of them)).... In short, you really have to pretty much take the phone a part. Being very careful with the Screen, and the "Sticky" LEDs and the Home button. There is a lot to it actually.
Like I said, been there done that... Cheap to get, takes some time but it is possible to replace that board. It's a separate board different from the actual main CPU board.
I would have to find it, but I had a manual, for taking these a part.
Click to expand...
Click to collapse
While I've been looking for answers about this I've seen teardown videos for the s5 so I can see what the port assembly looks like with it's little PCB behind it. As I have a replacement s5 on it's way all I need to decide now is whether to keep the old handset for spare parts or see if I can follow the teardown video to try and install a new port assembly to get the phone working again as a spare.
MarylinC said:
While I've been looking for answers about this I've seen teardown videos for the s5 so I can see what the port assembly looks like with it's little PCB behind it. As I have a replacement s5 on it's way all I need to decide now is whether to keep the old handset for spare parts or see if I can follow the teardown video to try and install a new port assembly to get the phone working again as a spare.
Click to expand...
Click to collapse
Yep, me too, seen many vids on the tear down. I decided to go a bit more, IMHO, to have an actual manual, PDF, when I did my first one, many years ago. So, can read, and use photos wisely. Seen too many Utube crap, where the break it, destroy it..... crazy!
Well, at this age, not too sure what to do my self. In our case, our present service is cheaper to Keep these. Grandfathered in, and we pay a but less, than going to any other carrier. Plus, these newer phones are not cheap at all.
True, it up to you. hope all goes well.
Sorry I am a novice so please excuse my question.
Are you assuming that the usb port is shorting even when no usb cable is inserted? As you put a fully charged battery in with no change it would seem that the act of charging is not involved.
Have you tried a voltmeter to check the voltage at the battery charging pins?
Have you tried to check the voltage at the two pins commonly used for a wireless charging adapter (to the upper left of the battery) to see what the voltage is?
Sorry if I am off base.

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