I have an iMate Jam with a damaged LCD that I have disassembled to put a new LCD into.
I've been pretty careful with dismantling and reassembling, but after the last time I put it back together, it won't start up anymore, even after hard resets.
Also, the red LED won't come on when I plug in the USB cable, if the battery is in, but will if the battery is removed or the battery cover is off.
Does this mean I've somehow fried the battery or the charging protection diode?
Any other ideas about what might be going on here and how I can remedy it?
Related
When I try to charge my Universal the red led stays on and it does not power up. I didn't try to update, unlock,...
It seems like it died all of a sudden. I already tried a new batter, hard/soft-reset, keeping it on the charger all night, removing battery for over a week, using different chargers...
Is there something like a battery switch like the Magician has?
Thanks in advance!
EDIT: Does anyone have voltage readings from the batteries small pins?
Dunno what to tell you, mine goes red when the battery is compleatly drained, and stays red untill its about 5% charged.
It also happens if your battery isn't connected when you plug in, so you might want to make sure that the connections are clean and not lint covered or something.
thanks for your help! I tried this,but no effect at all.
I tried to read the voltages from my battery. It says 1,4V on the small pins and 4,18 on the big ones. 1,4 on the small ones seems a bit low. The service manual doesn't give any information about the small pins
Red LED and the device not turning on meant a hardware failure for me -- had to give it in for repair -- fixed within a day but beat my head to a pulp tryin to figure out what was wrong.
i woke up this morning, and my htc8525, which had just been sitting on a table for a couple days, was off. battery ran out, i thought. i plugged it in to the wall adapter and not even the charging light came on. i plugged it in to a usb cord on my laptop and still no love. i cleaned the battery, charger and sim contacts with rubbing alcohol, still nothing;
i have not flashed it or updated software in it in over 2 months.
any suggestions on what could the problem be or how to fix it!?!?
thanks!
Try with another battery, sometimes batteries are hard to kickstart when they are completely drained.
Mmmm. Yes the charging circuit can get temperamental if the battery runs below 10%. But in that circumstance the Red LED will come on when the charger is connected.
The likely situation is that either:
1
The battery is completely flat and co-incidentally a pin is bent in the usb socket (thus preventing charging) - a somewhat unlikely co-incidence.
2
The internal on-board fuse is blown - this is actually not that uncommon.
You can see a pic of the fuse location in the Service Manuals section here:
www.mikechannon.net
Mike
I have made the assumption that the charger is operating normally.
similar problem here:
When connected (charger or USB cable) Red LED 'no charning' comes on.
How can I solve this problem and force the device to charge?
Thanks in advance
edit: I've downloaded Service Manual and tried to charge it - it's been almost 4 hours now, and Hermes is still dead, red LED still on (not amber)
To be clear, if the device shows a red LED then it's a charging circuit problem or a faulty battery. If no LEDs light up then it may be the fuse problem, USB connector, or battery connector block problem.
For situations where you get the red LED try these:
http://forum.xda-developers.com/showpost.php?p=1077622&postcount=6
Mike
So there's lots of questions about bad battery life but haven't found my issue in searches - altho I suspect my issue is a factor for many to some degree.
N4 took a 4' to drop to concrete. Screen cracked. Replaced screen w/no problems. Ran fine for a while on stock 4.4.4. Lollipop comes OTA practically zero day and since the N4 isn't my primary phone I upgrade to play around. Shortly after 5.0, the battery drains and shuts the phone off. I charge it overnight, pull it off, battery is dead, phone shuts down. Will stay on and operate fine on wireless charger but powers down if not connected. Pop off the back again to make sure battery connector is snug and reassemble. Now I've got red light of death. Get Google logo and can boot to recovery options but it just cycles. Disassemble again and ultimately find that the battery pins from the mainboard and their little black housing have come off at some point. Try to solder it back on but there's chips on the back side and there's just no room to get the solder on and pins reconnected. Not w/my skills anyway.
My main question is, has anyone successfully reconnected that annoying mofo? Thinking about skipping the connectors and just soldering wire straight from the battery to the board. I don't see anything in that connector that would be a problem if absent, but any warnings I should know about? Other workarounds?
This is not mission critical, just principle/spite.
Repaired?
gkmocv said:
So there's lots of questions about bad battery life but haven't found my issue in searches - altho I suspect my issue is a factor for many to some degree.
N4 took a 4' to drop to concrete. Screen cracked. Replaced screen w/no problems. Ran fine for a while on stock 4.4.4. Lollipop comes OTA practically zero day and since the N4 isn't my primary phone I upgrade to play around. Shortly after 5.0, the battery drains and shuts the phone off. I charge it overnight, pull it off, battery is dead, phone shuts down. Will stay on and operate fine on wireless charger but powers down if not connected. Pop off the back again to make sure battery connector is snug and reassemble. Now I've got red light of death. Get Google logo and can boot to recovery options but it just cycles. Disassemble again and ultimately find that the battery pins from the mainboard and their little black housing have come off at some point. Try to solder it back on but there's chips on the back side and there's just no room to get the solder on and pins reconnected. Not w/my skills anyway.
My main question is, has anyone successfully reconnected that annoying mofo? Thinking about skipping the connectors and just soldering wire straight from the battery to the board. I don't see anything in that connector that would be a problem if absent, but any warnings I should know about? Other workarounds?
This is not mission critical, just principle/spite.
Click to expand...
Click to collapse
So were you ever able to get the connector solder back on? I think mine break because it was to hot when I was removing the battery. My nexus 4 shutdown on me, my battery was expanded. I was wondering why my screen was being pushed out. I wonder if Android 5.0.1 is causing phone to run to hot. Never did this with Android 4.4.4. Hope the connector can be fixed. Maybe I take it to a solder shop.
jameswhite4684 said:
So were you ever able to get the connector solder back on? I think mine break because it was to hot when I was removing the battery. My nexus 4 shutdown on me, my battery was expanded. I was wondering why my screen was being pushed out. I wonder if Android 5.0.1 is causing phone to run to hot. Never did this with Android 4.4.4. Hope the connector can be fixed. Maybe I take it to a solder shop.
Click to expand...
Click to collapse
Not yet. I pulled the connector back off and cleaned everything up. I found that even very small gauge solder is too sloppy for the 4 small connections. Not to mention there's chips on the back side so you can't linger too long with heat. So my plan is to try again with some conductive ink and/or gel. If that doesn't work I'm just going to use wires to bridge the battery right to the board. Haven't had time to work on it but I'll follow up here when I do.
Did you get a replacement battery? Lithium batteries can swell because of overcharging. There are definitely more than a few N4 owners who had the same issue. A replacement battery won't solve that problem but it could be more tolerant of it, for a while - and depending on if it was "user error" or a fault in the phone's overcharging protection circuitry. Don't go to the trouble of having someone solder the connector back on with the old battery.
I have a P Smart which works powered by the mains USB adapter, but the battery charge never goes up in %
It was stuck on 0% but working as long as the power cable was in, pull the power cord and phone dies.
Phone would spontaneously power on as soon as the usb power was connected.
The red LED glowed on and off continuously, it should stay solid red when charging if battery under 10%
The phone may have got wet or taken a knock as it was in a backpack during mountain biking.
I put it into Huawei recovery EMUI white screen and the battery logo in the top right "appeared" to be charging...but it only got to 1% after 3 hours.
In this case the unlikely answer was to disconnect and reconnect the battery, to do this follow below:
Take the sim card & microSD tray out of the phone.
Then take the back off the phone, going around the edge with a spudger, plenty of details on web of how to remove the back.
You then have to remove a little metal strap bar by unscrewing two tiny screws. (see "psmart screws.png" attachment)
Then spudge the battery connector off as shown in the screen shot. (see "psmart issue.png" attachment)
Then re-seat the battery connector & it should begin to charge as normal, if so then put it all back together again.
I was tempted to buy a "USB charging dock" internal part or a replacement Battery. Neither was required.
Hope this helps someone else =)
Hi,
Please can anyone tell me whether the little connector on the vibration motor is supposed to be soldered to the motherboard or does it just touch at a certain place?
I've already posted another thread about having replaced the battery but it doesn't seem to charge.
Without going into details all over again, a local repair shop replaced the charging port last week - my phone was returned in seemingly working order but they had assured me a bulging battery was OK. I charged my phone but the battery was draining quickly, which was what led me to research a bit more and discovered how dangerous it can be so I ordered a new one.
In the process of fitting the new battery, I discovered half the screws in my phone missing, no copper tape, plus there is no black rubber cover over the charging port & vibration motor as is shown on the guide for replacing the battery on the fixit.com website.
So I'm wondering if the small square 'connecctor' (?) part of the vibration motor ought to be soldered to the motherboard or is it just normally held in place by the black rubber cover? In my phone now, the 'connector' doesn't stay touching motherboard so I'm not sure if this would affect the phone and stop it from functioning or would it just mean the vibration wouldn't work?
Would this affect whether the battery could charge or not?
(Incidentally, I discovered that the the battery connector was upside down compared to the pictures in the ifixit.com guide (the red wire was nearest to the battery instead of the black wire being nearest) so I was hopeful that by correcting it to match the picture, I would have solved the problem but unfortunately, it didn't make any difference. When I connect a wall charger, the screen just flashes and when I connect it to my laptop, it just gets a blinking white led but nothing more. It seems strange to me that it wouldn't make a difference - is it like a usb-c cable in that it can go either way round?)
The battery seller asked for photos of the new battery in my phone and has now offered to replace it - is this likely to make a difference or is the vibration motor not being attached to the motherboard the cause of the problem?
I'll be so grateful for some help.