Hey guys! I'm needing some advice/tips.
I've had my g tablet for about a year and lately it really has started acting up. The power reading on the tablet was either like 100% or dying. Last week it just crashed when loading even though I had charged it. I figured the battery was bad and bought a replacement on Ebay, The power socket had been loose for awhile and the whole thing actually fell out of the tablet when I took it apart. I had the socket soldered by a local guy at radio shack since I have no experience soldering. I replaced the battery with no problem and now the tablet will not charge. I can not tell if the new battery I bought is defective or just need a full charge since it seems my tablet won't charge with either battery installed. The connections from the power socket to the motherboard look good, but I'm wondering if the repair man could have messed up the soldering. When I put the original battery in, the tablet will boot up for a bit and then die, but I get nothing from the new battery. I left the new battery in and plugged in the charger thinking maybe the indicator light had gone bad, but that didn't make a difference. I just wondered if anyone had some suggestions for me. (I've been taking apart and repairing my own electronics for years now, so I am confident no damage occurred while I have been tinkering). Any ideas are much appreciated! Thanks!
See this thread. If you can boot into the ROM or ClockworkMod, then you can use the awk script I've written to find out what your battery is doing--charging, discharging, full, RSOC, etc.
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Hello all!
I recently purchased a used Droid Razr Maxx from a co-worker. The lcd screen was cracked so I replaced it. I took apart the phone completely and reassembled it with the new screen in place. The phone turns on just fine, the Motorola icon shows up and it gets to the charging battery icon with 5%, but after a few hours of letting it charge, it stays at 5% and wont turn on. Keep in mind, the phone has been charging for two hours from the time this post was made.
My question is, did I somehow damage the battery when operating internally? I can replace the battery if needed.
Another question. If I damaged the motherboard, would the phone turn on at all?
I am kind of wondering if there is a certain thing I needed to do before plugging it in.
To answer any questions that might be asked: The battery was completely dead when I did repair the screen. The charger is a wall usb charger, not plugged into my computer. I did place all the components inside the phone, to the best of my knowledge. I have had experiences when it comes to internal repair.
check for how long this 5% charge remain. it usually happen due to problematic battery guage
faheemakbar18 said:
check for how long this 5% charge remain. it usually happen due to problematic battery guage
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Morning now. The battery is still at 5%. The phone shuts off soon as the charger is not connected. Does not seem to hold a charge. Think I should buy a new one?
Garret27 said:
Hello all!
I recently purchased a used Droid Razr Maxx from a co-worker. The lcd screen was cracked so I replaced it. I took apart the phone completely and reassembled it with the new screen in place. The phone turns on just fine, the Motorola icon shows up and it gets to the charging battery icon with 5%, but after a few hours of letting it charge, it stays at 5% and wont turn on. Keep in mind, the phone has been charging for two hours from the time this post was made.
My question is, did I somehow damage the battery when operating internally? I can replace the battery if needed.
Another question. If I damaged the motherboard, would the phone turn on at all?
I am kind of wondering if there is a certain thing I needed to do before plugging it in.
To answer any questions that might be asked: The battery was completely dead when I did repair the screen. The charger is a wall usb charger, not plugged into my computer. I did place all the components inside the phone, to the best of my knowledge. I have had experiences when it comes to internal repair.
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It could be a faulty charger.
Normally, If the battery is poor, it won't hold charge but it won't stick to a particular percentage. It will only discharge sooner. But given the fact you got the phone dead, it might as well be the battery.
Worst scenario, you damaged the charging port.
I'd begin with using a different charger, if that doesn't work, try another battery.
neo.ank said:
It could be a faulty charger.
Normally, If the battery is poor, it won't hold charge but it won't stick to a particular percentage. It will only discharge sooner. But given the fact you got the phone dead, it might as well be the battery.
Worst scenario, you damaged the charging port.
I'd begin with using a different charger, if that doesn't work, try another battery.
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I have used other chargers and they all work for my other phones, just not this one. I am hoping it's a dead battery and not something to do with the motherboard. My friend wont let me dismantle his phone to see if it's the batter, lol.
Just the clarify, the phone doesn't boot up completely, only to the charging screen. The battery icon with 5% shown. When I unplug the phone from the charging screen, it just dies. Will not even boot up to the phone animation.
I purchased a battery replacement off of Ebay. It'll arrive in a few days. Let's hope this works!
Still could be the charger. Did you check voltage and amp specs? 850amps 5.1v
This phone can be picky. First razr I got had broken screen, repaired it and found myself in the same situation.
Connecting to a laptop would not charge it. Only stock charger. IPhone charger or chargers designed for iphones will not work.
Edit: When replacing battery, position is critical. If battery terminals are a little bit displaced it will not turn on.
Displacement can be minimal or imperceptible but will cause troubles. If possible don't place cover before checking that it turns on. (please avoid touching circuits or battery terminals or will get worse).
Sent from my XT910 using xda app-developers app
angrist said:
Still could be the charger. Did you check voltage and amp specs? 850amps 5.1v
This phone can be picky. First razr I got had broken screen, repaired it and found myself in the same situation.
Connecting to a laptop would not charge it. Only stock charger. IPhone charger or chargers designed for iphones will not work.
Edit: When replacing battery, position is critical. If battery terminals are a little bit displaced it will not turn on.
Displacement can be minimal or imperceptible but will cause troubles. If possible don't place cover before checking that it turns on. (please avoid touching circuits or battery terminals or will get worse).
Sent from my XT910 using xda app-developers app
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Click to collapse
That was exactly the problem....
I got the new battery, but not 24 hours later, I was realigning the cables inside it (like the front facing and rear cameras, along with the WiFi antenna) I slightly moved the replaced battery and the cable to the battery to the motherboard tore itself. After a long face-palm moment, I got the old battery back in place and realigned it very carefully. It turns out it still works, but I am out a new battery.
Apart from the battery, I need to find out why the front speaker won't work. Either the speaker is damaged or something needs to be in place correctly, besides the cable. Also need to get some adhesive gel to bond the screen and case together.
Damn I really had forgotten about that speaker. The fact is it tends to break. It has very fine copper wire winding that can break when you remove it the wrong way.
Having no experience I pulled not knowing that speaker is glued to motherboard. At that time I didn't knew it and thought that little bar left was part of the motherboard.
Since you disassembled almost everything, that must be the reason it is failing. If it is not that, it is badly plugged but I really doubt it.
Alas Never fixed it, so i can't tell correct process to reassemble or disassemble that speaker. Instead I searched for apps that would activate loud speaker automatically during calls.
Would have been nice to fix it but I got the opportunity to acquire a RAZR maxx so never touched and sold instead.
Removing that glue might involve using a hot air gun. So that you don't damage motherboard removing by force. (But again too much heat could Fry motherboard)
Maybe someone could share it's experience?
About that screen, Remember to have read about a 3m adhesive spray in some thread.
Also some one just passed hot air that melted original glue but it would be better not to play with heat over a battery.
Sent from my XT910 using xda app-developers app
Hello. My wife recently dropped her S2, with enough force to eject the battery. It had worked after she put it back in and all, and even called me to tell me about it. However, the battery ended up dying before she plugged in it. When plugging the phone into usb, the button lights would flicker and the battery charging icon would flash on for about a second. Rinse and repeat. If there is no battery in the phone, it just flickers the buttons, and the screen will flicker back, and just do it over and over.
The USB port on it was already really shoddy, so I bought a new ribbon and replaced it. Same symptoms. Pretty sure this is a hardware problem, although what the problem is exactly I do not know. I've already reseated all of the ribbon connections I could find. There's obvious signs of previous water damage, but it looks like very old damage. I wouldnt' be surprised if something is corroded, but the timing of this happening after it was dropped makes me think something else came loose. I just don't know what. I could potentially try to reflow the motherboard with my heat gun, but before I waste my time doing that, I was wondering if there's _anything_ else that could be causing these symptoms.
Thank you.
Over the 2-1/2+ years I have been reading this forum, I have seen a number of cases reported where the battery discharges fully and then will not recharge in the phone, while the phone exhibits symptoms similar to the ones you report. As far as I can remember, in every case the phone would boot up when a fully charged battery was inserted. And once the battery was charged, phone would then recharge the battery as long as it was not completely discharged. Not all phones behave this way. For instance, I have fully discharged my phone on several occasions without issue.
Therefore, I would first try inserting a fully charged battery to see if the phone boots up ok, and see if it will charge with a partially charged battery. Some have had to buy an external charger just for this purpose, or borrow a charged battery from another phone, etc.
creepyncrawly said:
Over the 2-1/2+ years I have been reading this forum, I have seen a number of cases reported where the battery discharges fully and then will not recharge in the phone, while the phone exhibits symptoms similar to the ones you report. As far as I can remember, in every case the phone would boot up when a fully charged battery was inserted. And once the battery was charged, phone would then recharge the battery as long as it was not completely discharged. Not all phones behave this way. For instance, I have fully discharged my phone on several occasions without issue.
Therefore, I would first try inserting a fully charged battery to see if the phone boots up ok, and see if it will charge with a partially charged battery. Some have had to buy an external charger just for this purpose, or borrow a charged battery from another phone, etc.
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Thanks for the detailed reply. I will try to find a battery. I do have a question though. If the battery was the cause of this, should the phone not act like this if the battery was not inserted? I would expect it to boot up just fine with the wall charger plugged into it without the battery in it, but that does the same thing (minus the battery icon).
Thank you.
I'm just not sure the answer to that. I can't remember if anyone mentioned that, although as I think about it, it seems like someone mentioned that as well. Still, I think this should be the first step in trouble shooting, because if this is the issue, and the phone is otherwise fine, then you don't want to be using a heat gun on it, or any other more difficult steps until you have eliminated this possibility.
Also, you might consider sending the phone out for repair if this step does not solve the issue. Assuming you are in the USA, Mobile Tech Videos is a very reputable shop that can deal with many issues.
You may be correct on this. The battery won't even charge through the external charger (my atrix battery charges fine on it so the charger is good). New battery (even though this is new) it is.
Update: The pins on the battery were labeled wrong. The label wasn't placed in teh correct position. I looked up a pic of another battery and found the label was offset by 1 pin, so I offset the charging pins by 1 and bam, it started charging. 50% charge, popped in the battery, and boom, booted right up.
Thanks creepycrawler!
So, this was my mothers tablet and it stopped working one day. She hadn't used it in a while and it was simply under her bed. After a period of no use she pulled it out and tried to use it - didn't work at all. Plugged in = no response, etc.
Friend has same tablet, same charger, etc. Tried his charger with her tablet, nothing. No charging light, no indication of response of the tablet whatsoever.
Tried the long-time trickle charge using a lower power charge, left it charging for days on end. Still nothing.
Tried replacing the battery and the charging port/ribbon, still nothing. Left to trickle charge again and still nothing.
This was all many months ago and she has since given up and purchased a new tablet. I thought of a good use for this TF300 if I could get it working so figured I'd try to fix it. Is there anything else I need to try before I just go ahead and replace the main board? It's only like $30 on ebay so no harm done if it doesn't work.
Hi everyone, I got a poco f1 from a friend. He used it quite normally. The cellphone was off for about a month - it didn't work. After a month I tried to start it however unsuccessfully, poco f1 is dead, I tried to charge it but it can't. What could be a malfunction? Help if you know and thank you very much
First, try using a different charging cable and brick. If it doesn't charge, Check if it can be read using a computer or laptop. If it still doesn't work, then the issue may be the charging port. If that's the case, if you are still covered by warranty, then go to xiaomi store. If not covered, go to a proper technician.
Btw if the device can be read on a computer, then it may just be a boot issue. Just flash again.
Does the white charging led light up when it's on charge?
If not, have you tried leaving it on charge for an extended period?
I've had difficulties with phones in the past after batteries have fullly discharged - eg the Moto G5 had some battery protection "feature" that stopped it starting up if it thought the battery was fully discharged - it was a bit over sensitive so would sometimes assume the phone was fully discharged when it wasn't
Try leaving it on charge for 24 hours or so then holding down the power button for for at least 20 seconds with it still on charge
If you have no luck and the warranty is out, get to a repair shop (or disconnect and reconnect the battery if you're confident to open it up - for a while I was getting sporadic shutdowns with my F1, following which it wouldn't take any charge, the battery light staying off when plugged in. This was all fixed by tightening the screws securing the black motherboard plate, the cover which retains all the connectors - not sure why but it seemed something, I suspect the antenna connection, had come loose. Since doing this about 5 months ago I've had no further shutdowns and my phone is usable again, having been completely unreliable before)
One trick that worked on some old Nokia phones was to charge it plugged to a computer instead of plugged to a charger - but as said elsewhere, if the battery is completely dead, YMMV.
Also, try to press and hold the power button and while doing that, plug the phone to the charger and then release the power button.
0p3rat0r_gr said:
Hi everyone, I got a poco f1 from a friend. He used it quite normally. The cellphone was off for about a month - it didn't work. After a month I tried to start it however unsuccessfully, poco f1 is dead, I tried to charge it but it can't. What could be a malfunction? Help if you know and thank you very much
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I guess your battery is dead
I have same issue, however I think my one is a motherboard charging IC issue. Does anyone know a way I can get it cheap from India, as I’m in the UK. India have it for around 9999 rupees which is about £10(+international shipping). I’ve ordered a charging port replacement from AliExpress to see if that solves the problem. However I don’t think that will work. No idea how my motherboard got damaged in the first place. I replaced a cracked screen myself and the phone was working fine for a few weeks, then it stopped charging all of a sudden. My PC also detects it/can access files doesn’t charge it. A new battery powered powered on the phone but again didn’t charge. Tried different adapters and cables too. Any experts out there know whether this is a motherboard issue or just a charging port issue?
If the phone is OFF for a month, then it is probable that the battery has gone down to a point that the BMS has shut it down. The BMS won't allow you to charge the battery because, in its own assessment, the battery is dead. Best way to test this case is to have another Pocophone with a good battery (or just a new battery altogether), detach the cable from that and test on yours. This may or may not work but this is one of the easiest to test and a new battery is easy to acquire.
ggezboye said:
If the phone is OFF for a month, then it is probable that the battery has gone down to a point that the BMS has shut it down. The BMS won't allow you to charge the battery because, in its own assessment, the battery is dead. Best way to test this case is to have another Pocophone with a good battery (or just a new battery altogether), detach the cable from that and test on yours. This may or may not work but this is one of the easiest to test and a new battery is easy to acquire.
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Before you do that, just try leaving it in charge for 24hrs as suggested above, though it does look rather as if the OP has nicked off so won't be using any of these sage words!
0p3rat0r_gr said:
Hi everyone, I got a poco f1 from a friend. He used it quite normally. The cellphone was off for about a month - it didn't work. After a month I tried to start it however unsuccessfully, poco f1 is dead, I tried to charge it but it can't. What could be a malfunction? Help if you know and thank you very much
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Click to collapse
yep mine also. i was playing genshin impact and suddenly it freeze and off. service center said it was dead motherboards.
Hello,
firstly i m sorry if this is the wrong section, i m new here.
Now to the issue. I have a Huawei P30 Lite with broken LCD. I replaced the LCD with an original Huawei service pack which included LCD, Frame, Earpiece, Battery, buttons etc. Basically it included everything except motherboard, charging board and coaxial cable. The problem is that after the replacement the phone is not charging. At first it was showing that it was charging without any success (% going down instead of up). After the phone battery drained, there is no charging at all.
Doing a full hardware check i noticed that there was indication of water damage on the charging port. I replaced the whole charging board. Still same result.
Reinstalled the old LCD pack (battery had some juice in it still for testing) with the same results. When the phone is turned on, i get a charging signal and the LED indicator but without actual charging. When phone is turned off i dont even get the LED indication of charging.
Steps i already took to save time:
Changed the charger. Used up to 2.1A charger with fast charge cable aswell.
Changed the charging board.
Tried both new and old battery, internal connectors etc
Cleaned the whole motherboard with alcohol to get rid of any debris even though there is nothing visible
The phone was working normally before the lcd replacement.
The phone is working perfectly with the remaining battery and was working perfectly until the new battery drained aswell. Only problem is the charging.
Cannot perform cache cleaning since battery is dead
Software upgrades, reinstalling etc will certainly not be of any help since the phone is not charging when turned off.
I am trying to avoid costly and time consuming repairs since the only fault i can assume anymore is human error which most likely i would have noticed during the repair. I cant accept that the main board died suddenly after a simple 2 part replacement and the only thing affected was the one that had water indication on it which didnt affect it so far.
I am looking for any kind of ideas since i am totally out of them.
thank you for listening.
Hey, i know its 1 year later but i wanted to ask you about this. I had the exact same problem as you with a p30 lite aswell. Did you find out where was the problem? Could you fix it? Thanks