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Today, I found that I can no longer turn on my Jasjar. The power button does nothing and I can't enter bootloader mode. I've also tried soft resetting but there's no response. There's no lights whatsoever and the screen remains blank.
When I plug in the charger, there is a solid red light but no further response when power button is pressed. I checked the battery with a multimeter and found it has about 3.84 volts.
Prior to this, the device will turn off randomly at various power level without warning. The battery is about 14 months old.
Is this a battery problem or a hardware issue?
Welcome to the forums
It could be any of the options you mention
If you can try with another battery
Have a read on the wiki, there is a section about batteries
Good luck,
I'm having the exact same problem. Solid red light. Happened after I tried fixing the headset pin. I had the battery taped so I could test if there was sound coming out without having to hold it down. I was doing something when I accidentally moved the battery and the problem started. Solid red light, no battery detection, no computer detection, battery reads same 3.84 volts. Any ideas? Shorted mobo?
Sorry to hear that. I bought a new battery but it didn't fix the problem. Maybe you'll have better luck.
I need help. I messed up my Droid 2 restoring a backup and the battery died during SBF. So I did the Macgiver trick where you connect an old stripped usb wire to the battery so that the phone can be tricked into booting up and being flashed. Since then I've had a question mark in my battery icon. It wont read that battery or the battery that I've just purchased and I get the "Invalid Battery" message and the battery wont charge in the phone. Both batteries are official Motorola. I can't send the phone back as its not under warranty. So I have a few questions.
Is the some sort of workaround/ fix for this? Motorola put software on the Droid 2 since Froyo that reads whether or not a battery is official Motorola product. Can the battery software be hacked/ deleted so that I can use my battery as normal?
Wow, we have this same exact situation like a month ago, and since then my fiancee still uses her broken phone . We did the Macgyver trick also and we got the battery with the question mark. We even bought a new battery and it still shows it, tried reflashing with a fully charged battery and nothing changed. We also tried clearing battery stats none of it is working. If anyone knows anything about this problem please let us know. If you get an answer that cures your phone please please please let us know about it. I actually posted your question on Yahoo! Answers since it was the same exact problem that we had and if anyone answers we will post the reply on here.
Thanks a lot and good luck!
I've got the exact same problem. All I did was purchase one of those external chargers so that one battery is always charged. It is annoying, yes, but its not too bad. I'm also looking forward to see if there is a solution, but I doubt it. We probably all fried the contacts on the phone, but we'll see.
Sent from my DROID2 using XDA App
hey, yeah we did the same thing, we bought the second battery yesterday but i have a question, did you try flashing it again with the new battery in? I was wondering if it would work but i want to see if it will before clearing one more time my fiancee's cellphone since theres a fish game that may be lost if we do that.
Thanks a lot.
Brandon
I've SBF'd multiple times since then, and the question mark is still there. I don't think theres a way around it, unfortunately. Personally, it's not really a big deal, but it may be for you.
I just really hate it because I have no clue when my battery dies.
Never had the issue, but one thing comes to mind..why not root, install clockwork recovery and then clear the battery cache?
jediman said:
Never had the issue, but one thing comes to mind..why not root, install clockwork recovery and then clear the battery cache?
Click to expand...
Click to collapse
They said they already tried that.
What exactly is this Macgiver trick? If you have a link, or some info on how it's I might be able to shed some light on this for you guys
The D2 battery is 3.7 volts; USB is 5. You probably blew out the A/D channel used to measure battery level.
Smartzkid said:
The D2 battery is 3.7 volts; USB is 5. You probably blew out the A/D channel used to measure battery level.
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Click to collapse
Ah, I see so they're hooking up the USB straight to the phone...found it after a little searching...
But i'm curious, wouldn't that only happen if the wires ended up touching the other two terminals, and not just the outer (+) and (-) ones?
Will getting a new oem battery work?
No, replacing the battery will not work if you messed up when connecting the spliced USB charger + and - to the wrong terminals in the phone.
I have exactly same problem. I sliced the usb cable to revive my Droid X when the battery died during sbfing. Now my phone survived but Im stuck with question mark on battery icon. I flashed reflahsed and flashed again but no luck. wiped batt stat but no luck. Tried new OEM battery, no luck.. Put the batt in the freezer for 10min but no luck. I ran out of all the possible solution.
Now I just got the external stand along batt charger from ebay with 2 extra batts. I just carry extra battery since I dont know when the phone will go dead..
I would love to find out if someone can fix this issue. I still got 6 mo to go before I can upgrade.
I HAVE A SOLUTION (worked for me):
When doing the "Macgyver Hack", I jammed the USB wires into the battery. This pushed the metal spring terminals out. After that, the battery terminal springs don't all touch the connectors in the phone.
Take a needle, and carefully pull the battery's metal springs toward each other.
This worked for me.
Also, try this:
Remove battery and unplug phone. Plug phone in (without battery), then turn on (some phones will turn on without a battery). After the logo comes up, insert the battery. This made my phone recognize the battery and get into the OS.
Once the battery is recognized and you can boot to the OS, root the phone and get the battery calibration app (and use it).
I have a Motorola Defy, and used the Macgyver hack, then had the question mark problem for days before figuring this out.
jodaboda, Thank you a ton for that. I've been searching and trying out things to fix this and this is the closest I've come.
Although the Droid 2 doesn't boot up without a battery, I've had to the Macgyver Hack to get it to boot. The battery calibration app reads 100% charged when I am using the Macgyver Hack and is showing that the battery is charging. I'll tell you if it works once my battery is charged and I calibrate.
I wasn't able to get it to work. I think there is potential but my phone eventually died and it wasn't able to fix it. That app can measure the volts correctly tho, which means we should be able to get the battery working again somehow.
jodaboda said:
I HAVE A SOLUTION (worked for me):
When doing the "Macgyver Hack", I jammed the USB wires into the battery. This pushed the metal spring terminals out. After that, the battery terminal springs don't all touch the connectors in the phone.
Take a needle, and carefully pull the battery's metal springs toward each other.
This worked for me.
Also, try this:
Remove battery and unplug phone. Plug phone in (without battery), then turn on (some phones will turn on without a battery). After the logo comes up, insert the battery. This made my phone recognize the battery and get into the OS.
Once the battery is recognized and you can boot to the OS, root the phone and get the battery calibration app (and use it).
I have a Motorola Defy, and used the Macgyver hack, then had the question mark problem for days before figuring this out.
Click to expand...
Click to collapse
I don't have a nan back up from recovery but have read on another thread that you can also fix this by doing a restore of a back up through the recovery from a time before you have had the battery ? issue.. several people have also mentioned that it worked for them.. in my case I don't have a back up before this issue so I cannot confirm.
my phone died noooo
bumping in case anyone has a solution?
please. pretty please.
tried methods above, phone wont boot unless plugged in... i don't care i can't tell what % its at, but i do care it wont boot off battery power.
Tried 2 Ways with no Luck.
1. Power button + volume button down Long press less than a min. ?
2. Plug in for a day or more. ?
Gotto try jadaboda's tip.
Theheroitsme said:
Tried 2 Ways with no Luck.
1. Power button + volume button down Long press less than a min. ?
2. Plug in for a day or more. ?
Gotto try jadaboda's tip.
Click to expand...
Click to collapse
try a fastboot cable or a spare battery charger
sd_shadow's [Collection] of Links for:
Droid 2 (a955)
Sent from my XT1254 using XDA Labs
Hi to everyone,
I bought my S4 in Germany and I live in France.
My phone, after 10 months started to exhibit strange behaviors:
- Turning off and then turning on by itself
- Turning off and then not turning on, so I had to remove the battery, reinsert it and it then vibrates and turns on for few seconds and then it turns off again
- Sometimes it is able to turn on and it worked
So, I sent it back to the reseller (it was not amazon directly). They told me it presented traces of water and they repaired it on goodwill even if the smartphone should not be repaired because water is not into warranty.
Anyway they sent it back to me, it worked for 1 month, and now I have a phone that doesn't turn on anymore. I told them, they told me it is not their problem and it is not anymore in warranty because I had ONLY one year of warranty (I bought it 'as new' on amazon). Anyway they sent me a new battery and I tried the battery on another S4, it is working, so the battery is not the problem.
I went to an authorized shop to get it repaired but they told me that they wanted crazily expensive money. So, I am a robotics engineer, I decided to repair it by myself and that is why I am here.
I want to ask you what could be the problem. I read until now 2 possible reasons:
1) The power button is faulty. In this case is there any way to connect the contacts the button connects with an hard connection?
2) The USB board is not charging the battery. I tested with a multimeter and the + - voltage on the battery was always around 2.62/2.64 V. I don't know if this is normal but I checked that the part is not expensive.
Thanks a lot for your help.
The USB board isn't expensive but I don't believe the USB board is the problem here. Lithium batteries come partially charged when new, so if the S4 didn't turn on after putting the new battery in it, then the only remaining issue is the power button. Buying a replacement power button should be just as inexpensive as that USB board. Plus, being a robotics engineer you should have basic knowledge of soldering, meaning you could replace the button yourself.
It does sound like a power button issue.
A set of 4 buttons is about 5 dollars on the internet.
I'd recommend opening the phone up and checking the power button with a voltmeter.
If it is the power button, then simply replace it. It doesn't seem hard. Here's a guy with a power button issue. You can see where to check and how to replace it.
Thanks. I will try with the voltmeter. Thanks a lot.
So, I unmounted everything and tested the power button. I am quite sure it is faulty. ( I will be 100 % tomorrow because I could test only with a really bad multimeter) .
Anyway I have a question in the meanwhile. Is it normal that the red charging led doesn't show up when I connect to the power supply ? I think it could be possible that the faulty button induces a problem like that but I would like your opinion about it.
Thanks.
I don't think the power button would affect the LED. A friend had a problem with the power button, but I don't think it cause any problems with the LED. I haven't noticed. But my friend would've noticed if there was any and would've told me, which wasn't the case.
I tested with the GOOD multimeter and it happens what it is showed in the video you posted me in a previous post.
The button has 3 pins:
pin1
pin2
pin3
If I check for continuity between pin2 and pin3 there is, as it should be in a working button.
If I check for continuity between pin1 and pin2 there is, as it should NOT be in a working button.
Having continuity on both checks means the buttons is continuously pressed. So I guess you will have to change it.
Yeah, I know. I already ordered it. It will arrive on Friday.
What I was wondering is if this could give also the problem of the LED. What do you think?
I removed the button. I placed the battery in the phone. Put the charging cable. But nothing is happening. This looks strange to me because without button it should at least appear the battery icon. What could it be ?
Thanks
Maybe your phone bootloader is so old that it came to a situation where samsung's signing for this bootloader version has expired then ABOOT doesn't allow you to boot.
Just a suggestion and nothing else.
But this could be else used by samsung to force you update your phone.
minidiable said:
I removed the button. I placed the battery in the phone. Put the charging cable. But nothing is happening. This looks strange to me because without button it should at least appear the battery icon. What could it be ?
Thanks
Click to expand...
Click to collapse
Not if the circuit isn't complete. The button completes the circuit, which would explain the lack of any indicators.
Killnolife said:
Maybe your phone bootloader is so old that it came to a situation where samsung's signing for this bootloader version has expired then ABOOT doesn't allow you to boot.
Just a suggestion and nothing else.
But this could be else used by samsung to force you update your phone.
Click to expand...
Click to collapse
Why should be that ? My phone was working perfectly before and at some point the bootloader is not good anymore. Anyway thanks for the hint
Strephon Alkhalikoi said:
Not if the circuit isn't complete. The button completes the circuit, which would explain the lack of any indicators.
Click to expand...
Click to collapse
Ok. Thanks . This still gives me some hope. I will wait for the button and come back here soon.
Thanks a lot for your amazing help.
This community rocks
Greetings,
I have an extra S4 mainboard laying around so I decided to use it to turn one of my non-smart TVs to a motion controlled TV (Will use front and back cameras together for 3D triangulation and IR blaster for manipulating the TV). Anyway I bought one 5V to 3.7V step down board ([ aliexpress ]/item/18650-lithium-battery-protection-board-3-7v-3-6V-4-2V-lithium-battery-charging-board-1A/32804861065.html) and connected it instead of the battery and everything worked fine for a while. Then the phone entered into a boot loop. After wiping cache partition in safe mode it has turned on properly only to start looping in 30secs.
So I want to diagnose what the problem is, I have checked the logs in the safe mode but they were all huge and did not know where to look at.
In this regard I have couple of questions:
1) Does this sound like a temperature problem or power management problem? How to distinguish them other than feeling around ICs with my finger (and no they were not extremely hot)? Or how to determine the cause for the arbitrary looking power cycles.
2) How can I transfer logs to my PC, even though it power cycles. Fortunately USB debugging is enabled
3) How can I detect power cycle related entries in the logs? If I share can you guys help me?
4) S4 battery has 4 contact points 1st being V+ and 3rd being GND. I thought others were `Not Connect`, was I right?
5) Assuming I can sort this problem out, is there a way to make phone turn on as soon as I feed power through battery connectors (without pushing the on button, I can add a capacitor and connect incoming power to switch by soldering but I would prefer a SW solution if possible.).
I do not believe the problem has to do with the step down board as I have measured its output as 3.9V and it has a current limiter in it.
I would extremely appreciate any input/help/comment, thank you all
Hello people,
I have problem with my Samsung Edge 7 and please if you can just tell me what can be a problem and on which way should I go to solve this problem I would appreciate it very much. No need for step by step solution just tell me what can I do except send it to Samsung repair shop or recycle it. I will take it apart by myself if needed but I don't have a clue which part should I look to replace or what.
So... the problem is that I manage to charge the device one day when it don't want to charge and after that I managed to turn it on. Everything was working fine, didn't try anything much just unlock screen and put it to sleep.
After that I turned it off so it don't consume battery while I would be able to backup my data. When I was able to do backup I turned it on and it powered up normal so I proceed to backup my contacts (export to SD card).
When the export finishes phone just froze and I have to turn it off with POWER + VOLUME DOWN button combo.
After that few times when I try to power it on it just froze on boot up logo and I turned it off that few times with the same button combination as before. Until it don't want to power on anymore. So I tried to put it on charger to see if anything will happen, and nothing did.
I just left it to sit on my desk and I noticed that the phone is heating but I got no reaction at all from the phone (powering on or charging)
The day after when the battery was drained obviously I managed to charge it up again but when I power it on after it got to 100% charge it froze again and there goes same procedure as before (button combination restart, no response, heating, battery dead, charging...)
So now I can't even charge it anymore and I took out SD card to check if my contacts are there at least. But nothing, that contacts vcf file is not even saved on SD card even I choose that option when exporting my contacts.
Now I don't know what else to do since my phone wont even charge or power on and I would like to backup my data at least and then I can recycle it if I must.
So please if you have a clue just tell me where can I look at what can I try to do.
Thank you in advance and have a nice day
some of sgs has these problem. The motherboard is broke, i had same problem and sent to samsung service, they changed motherboard. I guess it's related to cpu temp sensor, inside the cpu.
Thank you Ganjax for your reply. That was the thing I was afraid of. So all my data goes away with motherboard?
I will wait few more days with some replies even I find your very useful and accurate since you had the same problem.
hey I also have the same issue, putting the phone in the freezer and letting it freeze makes it so that it can turn on for only 5minutes or till when it drops back to room temperature hopefully this will be enough to get your photos back.
millkyway4 thank you for you reply.
I am not in a possibility to try your method because I disassemble my phone and striped down battery for research purposes.
Neither I think that those 5 minutes will be enough to transfer all my data but if I ever reassemble my phone I will give it a shot.
So... Considering my research and striping down the battery the things goes like this (if someone is interested in this topic):
I disassemble the phone and remove the battery. Battery is connected on motherboard by some connector that I don't know the name or type, so if someone knows I would like to know too.
Since I couldn't find positive and negative lead on that connector (because of microscopic leads) little bit down on flat cable, near the battery, I removed coating and manage to find leads and measure voltage of the battery to confirm positive and negative lead.
By the measurements I assume that battery voltage is fine (~3.7V), but when I connect it to external charger which have built in ampere meter the battery doesn't charge as other batteries and ampere meter readings vary by 100mA +/- I set up to be initial charge. In normal case when I charge batteries amperes only goes down by the time the battery charges so I find this event an anomaly.
Since that is the case I removed the chip (from which the flat cable is coming out) that is on the battery assuming that it is causing that anomaly. Leaving the battery with only positive and negative lead that I connected and also measure and put on my external charger. But the same thing happens as with chip, or what is called, on the battery.
Going further with my research I cut down flat cable from battery chip (electronics) and connect positive and negative lead, I found before, directly on my charger on which I adjust voltage on ~3.75 volts and connect the connector with flat cable back to motherboard. So you probably see what I did here but if you don't the research I want to conduct is that my external charger acts as battery for the phone and I try to power it on like that.
In this case ampere meter shows 0 since the current which is flowing trough the phone is none. After I am sure that this is the case I tried to power on my phone with connected external charger like that and my ampere meter shown a current draw of 100-200mA on the POWER button pressed but the phone doesn't turn on.
So now I need someone with a little bit better knowledge of the phone, batteries, working order and type of connections like this to tell me what did I do right and wrong so I can prove that Ganjax statement, and my assumption, that motherboard is dead is really correct.
Ganjax don't mean I don't believe you or something, I appreciate your reply, this is just for research purposes because I would like to play with this stuff and that is the things that interest me.
And if there is some "fanatic" like that to tell me what can I do next and try or point out what should I do and don't make next please leave a comment and we can discuss this matter together and find out something about this case.
Thank you all and have a nice day