LG G2 charger noise when charge is at 100% - G2 Q&A, Help & Troubleshooting

Hello everyone
I'm having a bit of an issue that's waking me up in the middle of the night, regarding my LG G2 charger.
When my phone is charging and ONLY AFTER it reaches 100%, the actual charger will start emitting a humming/buzzing/high pitch sound that is very very annoying and a bit loud as well. I believe this is happenning when it is making it's maintenance charge in order to keep the battery at 100%.
Does your LG G2 charger produce the same issue or do I actually have a defective charger ?
Thank you all
regards,
Nelson

You probably have a "defective" charging unit. That's likely an inductor coil in the charger that has a loose coil that is vibrating. It's not uncommon, it's how inductors work. Usually there is glue or such to keep it from rattling, but sometimes QA messes up, or things come loose during use. I wouldn't worry about it unless things become excessively hot. If it's annoying I would suggest getting a new adapter. My Qi charger adapter makes a similar humming/vibrating noise, but it's rather faint.

reklipz said:
You probably have a "defective" charging unit. That's likely an inductor coil in the charger that has a loose coil that is vibrating. It's not uncommon, it's how inductors work. Usually there is glue or such to keep it from rattling, but sometimes QA messes up, or things come loose during use. I wouldn't worry about it unless things become excessively hot. If it's annoying I would suggest getting a new adapter. My Qi charger adapter makes a similar humming/vibrating noise, but it's rather faint.
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Click to collapse
Hello and thank you for the reply my friend.
The thing is, it's not the heat that's bothering me because it actually doesn't heat that much!
The only problem for me, is the actual noise it makes when it is sending the maintenance charge after the battery levels reach 100%. It's a high frequency pitch, so high that it wakes me during my sleep lol
thank you for your feedback though.

It's a loosely soldered capacitor. If you still can, exchange the charger or get a new one.

robogo1982 said:
It's a loosely soldered capacitor. If you still can, exchange the charger or get a new one.
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Click to collapse
thank you, I'll see if I can get it exchanged.
Regards,
Nelson

Related

Electric Charges while charging

Hi,
Any of you feel that there is electric charges on ur ear while charging when making a call? when i disconnect the cable it is okay. only on the receiver portion. could it be a faulty battery?
I've not experienced that issue, but then again I've not tried using the phone during charging.
Are you charging from the mains charger, or from a PC?
It is most probably a small amount of electricity "leaking through" down the cable from whatever you are charging it from.
This might sound a bit scary, but is not necessarily a danger or even a fault. PC power supplies in particular have components to stop EMC (radio interference) that can sometimes cause a bit of this "electrical leakage".
If you are using the supplied charger, make sure it is not damp or wet, as this really could be a danger.
- Steve
Hi,
I am refering to the charger. using PC is okay. i tried with different power point still the same. no it is dry. shld i go to the service center
I just tested the electrical mains leakage current from my own charger.
It's around 15 microamps, probably not enough for most people to feel but maybe on a sensitive part like the ear it's possible. I think that the CE requirement is 250 microamps maximum so it meets statutory requirements.
Obviously I cannot tell whether there is a fault in your charger, but if it was mine and the current was not actually uncomfortable, I wouldn't worry too much about it. I would expect genuine HTC chargers to be 100% safety tested.
i did notice the same from mine while using the wall charger.. on my hand tho not my ear.. more than once.. kind of weird.. but w/e haha
Yes, I have had 4 HTC phones for myself and every of them has done it while on wallcharger. It is kinda annoying when speaking on the phone.
Wizard did it really much and couldnt sometimes talk on the phone same time.
2 Diamonds did it, one i use now has invisible shield so it kinda stays in them because of rubber
HD does that but not much or not at all.
Maybe it is because of aluminium or metal casing on phone like wizard and Diamond, havent yet tested HD much. Got it yesterday :>
Hi,
so it a norm for all HTC device? so it is not faulty?
thankx

Charger makes strange noises

Hi everyone,
I noticed that the original battery charger (wall socket to usb) makes strange noises when the phone is charged. It's very quiet when the phone is in standby-mode but when the display is on it becomes louder. It's an alternating buzz -it comes and goes- sounds like a circular saw. Make it impossible to sleep while the phone is being charged.
Do you have similar noises or is mine just broken?
Yes.. i hear it too...
mysaq said:
Yes.. i hear it too...
Click to expand...
Click to collapse
Thank you for your reply...so I'm not the only one
Anyone else, please?
It's the LEDs. If you turn of the charging LEDs you'll get rid of the sound. At least mine did. I was trying to sleep with it charging next to the bed and got annoying as hell.
Me too, I think it came from the charger.
mine has absolutely no noise at all whehter I turned on LED or display while charging using the wall charger.
yeah mine squeals too in time with the leds it worse when the phone is charged
You guys should not worry, it's a normal "issue" with electronics. Most Intel-based notebooks have it and a lot of chargers make the same noise. It's usually always there just barely audible, or you may not be able to hear the highest frequencies.
maedox said:
You guys should not worry, it's a normal "issue" with electronics. Most Intel-based notebooks have it and a lot of chargers make the same noise. It's usually always there just barely audible, or you may not be able to hear the highest frequencies.
Click to expand...
Click to collapse
Yeah, I guess you're right. But it's very annoying since I charge my phone over night and it has to lie next to my head because it's my alarm clock too.
I don't charge a notebook in my bedroom over night, therefore it doesn't bother me
But I tried your advise and switched off the charging leds -it became better after that! Thanks!
mine does not make any noise at all. im in the u.s 120vlts, whats your outlet voltage?
c_legaspi said:
mine does not make any noise at all. im in the u.s 120vlts, whats your outlet voltage?
Click to expand...
Click to collapse
The charger transformates 230VAC 50Hz to 5VDC 700mA here.
yeah i think that might make the difference. the charger is stepping down its voltage and hence more noise.
my friend i don't have this noise .
and my phone is close to me i don't hear it any noise .
i have 220 volt
okay.... i guess that shoots my theory down.
its a small transformer.... from 100V~240V DC to 5V DC.... so it is reasonable to make some high frequency noise as in other transformer.... its just a matter of the build quality of that small sucker

I love the phone but the charger's driving me nuts!

It's torture, it's mind control, it screws a hole in my head and leaves my ears ringing with tinnitus. Yes we're taking about the charger!
I had been in the habit of charging my phone overnight with the phone beside my bed. This is now impossible with the GN2 charger as it emits a tortuous, uncomfortable high pitch squeal particularly near the end of the charge.
It's like a mind wash that leaves your brain confused and microwaved. Is Sammy secretly developing an army of zombies?
I got nothing.
Sent from my GT-N7100 using xda premium
Tuffcheez said:
It's torture, it's mind control, it screws a hole in my head and leaves my ears ringing with tinnitus. Yes we're taking about the charger!
I had been in the habit of charging my phone overnight with the phone beside my bed. This is now impossible with the GN2 charger as it emits a tortuous, uncomfortable high pitch squeal particularly near the end of the charge.
It's like a mind wash that leaves your brain confused and microwaved. Is Sammy secretly developing an army of zombies?
Click to expand...
Click to collapse
Use blocking mode and disable all notifications during your normal sleeping hours.
Tuffcheez said:
It's torture, it's mind control, it screws a hole in my head and leaves my ears ringing with tinnitus. Yes we're taking about the charger!
I had been in the habit of charging my phone overnight with the phone beside my bed. This is now impossible with the GN2 charger as it emits a tortuous, uncomfortable high pitch squeal particularly near the end of the charge.
It's like a mind wash that leaves your brain confused and microwaved. Is Sammy secretly developing an army of zombies?
Click to expand...
Click to collapse
Mine doesn't make noise when it is actively charging. I might hear the pulses for a minute after it is done charging and it's trying to figure out that it has completed charging and the light turns green. Then I unplug it when it is done. But I unplug it from the wall first then 2 seconds later I unplug it from my phone. This way, you avoid the ticking noise. It has trained me like a pavlovian dog to save me money...even though it is probably a few cents a month.
Yes, some people had reported of a buzzing sound from the charger. Go get a warranty exchange if you want cos not all charger unit have this issue.
I use my PC to charge mine. It's slow but, I sleep 8hrs, it's usually charged by the time I wakeup.
warranty. end of problem.
My charger squeals in some plug outlets and not on others. I think it may be a grounding issue. Try plugging into a different outlet or into a power strip and see if it still squeals.
Sent from my GT-N7100 using xda premium
Tuffcheez said:
It's torture, it's mind control, it screws a hole in my head and leaves my ears ringing with tinnitus. Yes we're taking about the charger!
I had been in the habit of charging my phone overnight with the phone beside my bed. This is now impossible with the GN2 charger as it emits a tortuous, uncomfortable high pitch squeal particularly near the end of the charge.
It's like a mind wash that leaves your brain confused and microwaved. Is Sammy secretly developing an army of zombies?
Click to expand...
Click to collapse
Not had this issue myself and have the charger by the bed, will listen out for it. as other have said you may have a dodgy charger ask for a warranty swap out.
Yeah... My S2 charger emits a small high-pitched noise after being unplugged. Best way is to remove it from the wall first, and allow the phone to draw off any residual charge in the capacitors.
I'd imagine that something is a tad leaky in the rectifiers... If it's a really high frequency, it's possible you're hearing the actual pulsing of the mains supply coming through (these power supplies work by rectifying the mains supply, then inverting it. The inverter should operate above 20 kHz so you don't hear it. If it's "faulty", it might operate at less than 20 kHz?
andrawer said:
warranty. end of problem.
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Click to collapse
This
Got absolutely no problems with my charger here...
I experienced the exact same thing with a charger before (I haven't even tried Samsung's yet). My wife can't hear it, it drove me insane. Woof woof I guess...
The high pitch noise has nothing to the with your phone. It is caused by the converter inside the charger. Since the chargers these days have to be cheaper and cheaper, inferior products are used sometimes. Try using an older micro-USB charger (I'm using one from HTC), or a standard 220V adapter stick with a standard USB-microUSB cable. And not all chargers are equal, not even if they are from the same manufacturer.
One of these will most likely restore your sleep

Anyone tried wireless charging ?

Anyone tried wireless charging on DT2 or MXF ? And how was the experience ?
Works, nothing special - overnight charge from 1% to 100%
It works, but many of us have problems with the Qi charger disconnecting charge at 100% and then reconnecting after about 5% has drained. Motorola is looking into it. I may be picky on which Qi charger you use.
Maybe I did not notice this problem - as I put the phone on charge in the evening, until the next morning I take it to work.
I use cheap qi charger from ebay - ~$2.5
Use a ravpower qi charger every night, no issues, phone comes off 100% full, cool to the touch. I know some units I've tried with my Maxx back in the day kept it warm through charging.
007shark said:
It works, but many of us have problems with the Qi charger disconnecting charge at 100% and then reconnecting after about 5% has drained. Motorola is looking into it. I may be picky on which Qi charger you use.
Click to expand...
Click to collapse
Hm, I haven't had this issue yet. I use a cheap generic three coil Qi charger. Is the issue just Qi or PMA chargers too? Because I was looking at buying another but this issue would be a little annoying to me.
007shark said:
It works, but many of us have problems with the Qi charger disconnecting charge at 100% and then reconnecting after about 5% has drained. Motorola is looking into it. I may be picky on which Qi charger you use.
Click to expand...
Click to collapse
Exactly how it should work to prolong battery life. Keeping any battery (especially lithium) full charger for long period of time will significantly decrease its capacity.
My phone gets very warm wireless charging. I prefer fast charge
Sent from my XT1585 using XDA Premium 4 mobile app
Zeljko1234 said:
Exactly how it should work to prolong battery life. Keeping any battery (especially lithium) full charger for long period of time will significantly decrease its capacity.
Click to expand...
Click to collapse
Never had a problem with that in the past even with wired chargers. I don't think in recent phones that there is actual current on the battery at all times past 100% whether charging wirelessly or wired. I'm pretty sure it goes into a maintenance mode, but it will still show charging on the display which is the important part. That is important if you use it on your nightstand as an alarm clock with wireless charging. My Sony Z3v had no problems staying in a charge state even after 100% but my Turbo 2 does not which causes it to disconnect. It will reconnect after it loses about 5%. If I don't have it silenced, it will wake me up when it reconnects. It also affects any tasks you have programmed to happen when it is charging.
From my understanding, the first Turbo did not have this problem. I think it cropped up from the inclusion of the powermat charging or maybe something related to the 810 processor. Anyway, just waiting for a definitive answer from Moto.
---------- Post added at 05:54 PM ---------- Previous post was at 05:48 PM ----------
Xelios029 said:
Hm, I haven't had this issue yet. I use a cheap generic three coil Qi charger. Is the issue just Qi or PMA chargers too? Because I was looking at buying another but this issue would be a little annoying to me.
Click to expand...
Click to collapse
Read the thread at the Moto Support Forums. https://forums.motorola.com/posts/215aa2bb51
It doesn't seem to affect everyone which may mean it is more dependent on your charger.
damkol said:
Maybe I did not notice this problem - as I put the phone on charge in the evening, until the next morning I take it to work.
I use cheap qi charger from ebay - ~$2.5
Click to expand...
Click to collapse
ahahahahhaha.....it's really cheap !!!:laugh::laugh::laugh:
RGDROID said:
Use a ravpower qi charger every night, no issues, phone comes off 100% full, cool to the touch. I know some units I've tried with my Maxx back in the day kept it warm through charging.
Click to expand...
Click to collapse
Have any Qi charger brand to propose ?
I'm using a Samsung Qi puck - not the newer round plastic one, but the older more squared soft-touch one. Works great, I don't have the 100% disconnect issue.
I use the tylt qi charger the desk top one so my phone is sitting at a 60 degree angle. It works great no issues and every morning my phone is at 100% and cool to the touch
This all sounds encouraging. I think it would be helpful if people could also add a few common notes:
charger / model
any case they have on the phone (or not) when using a Qi charger
whether the phone must be in a certain orientation (e.g., horizontal vs vertical) to charge
whether the phone is at 100% - and stays there after a charge
whether the phone is cool / warm / hot once charged
A cleaned up list developed from this would be a good resource for the user community
Tylt works great phone gets warm. Itian charger is cheap from Amazon but is very finicky.
Sent from my XT1585 using XDA Premium 4 mobile app
Really, Zeljko?
Zeljko1234 said:
Exactly how it should work to prolong battery life. Keeping any battery (especially lithium) full charger for long period of time will significantly decrease its capacity.
Click to expand...
Click to collapse
Uhm, that's one of the sillier things I've read today.
If it drains to 5% it's not terribly useful as a charge system regardless.
A charge controller chip is supposed to be designed to PREVENT the problem you just described.
Each charge cycle, regardless of it's form shortens the life of the battery, period. If you charge it up and then let it deplete it like that, you're damaging it as much as if you left it charging.
You kind of need to leave the stupid thing plugged in or in some wireless charge hysteresis loop so that the device isn't drained. In light of the charge system being supposed to keep the battery out of the loop until it needs to charge it again (some threshold below 100%) it shouldn't MATTER if it's "plugged in" and the device won't be pulling from the battery.
madscientist_42 said:
Uhm, that's one of the sillier things I've read today.
If it drains to 5% it's not terribly useful as a charge system regardless.
A charge controller chip is supposed to be designed to PREVENT the problem you just described.
Each charge cycle, regardless of it's form shortens the life of the battery, period. If you charge it up and then let it deplete it like that, you're damaging it as much as if you left it charging.
You kind of need to leave the stupid thing plugged in or in some wireless charge hysteresis loop so that the device isn't drained. In light of the charge system being supposed to keep the battery out of the loop until it needs to charge it again (some threshold below 100%) it shouldn't MATTER if it's "plugged in" and the device won't be pulling from the battery.
Click to expand...
Click to collapse
You're talking like battery expert. Well, maybe you're. Then contact those guys and tell them they're wrong
http://batteryuniversity.com/learn/article/lithium_based_batteries
I picked up 3 Samsung qi chargers at 6 quid each on offer on Amazon (UK). They work very well although they are more a convenience thing rather than a method of charging. I use one at work. One in the bedroom and one next to the Xbox great for the work desk to keep the device topped up and frees you up from plugging and unplugging constantly BUT.... It takes absolutely ages to charge so you dont go expecting to be dumping your cabled chargers. I use the work one most of the time as I'm out and about a lot and its very useful to be able to just grab the phone without unplugging and placing back on the pad when at the desk. The turbo charger gets used at home more coz in more likely to plug in to that and jump in the shower knowing that I'll have a nice reserve of power for the pub so yes they work as advertised and work well great as a trickle charge device when you ain't in a rush. If anyone is interested ping me and I'll spend some time on giving more detailed stats such as charge times from 0% and model number of the devices I use. Away for work at the mo so probably the weekend
Sent from my XT1580 using Tapatalk
Raynic
I bought the Raynic Orchard I. It charges the phone just fine, but I noticed that if the phone wants to wake up because it senses movement, it detaches and reattaches to the charter, which gets very annoying. I moved the phone to an angle where it couldn't see me (but I could see it; sensors were under my monitor stand but the rest of the phone was sticking out) and everything went smoothly after that.
Verizon QI charge stand, Verizon case, have to charge upside down
To charge our new Turbo Droid 2 in a Verizon QI stand with the Verizon case on it, the phone must be upside down. It's OK if out of the case. We have a car QI 'base' which it won't charge in either; probably exact same issue, whatever that is. Any ideas appreciated!
jdmba said:
I bought the Raynic Orchard I. It charges the phone just fine, but I noticed that if the phone wants to wake up because it senses movement, it detaches and reattaches to the charter, which gets very annoying. I moved the phone to an angle where it couldn't see me (but I could see it; sensors were under my monitor stand but the rest of the phone was sticking out) and everything went smoothly after that.
Click to expand...
Click to collapse

Power on phone without battery

Anyone been able to turn on this phone and run it without a battery with permanent power?
Short answer: not possible.
Longer answer: You would need a pretty hefty engineering brain to figure this out, as the circuitry of the daughter board detects and adjusts the mainboards voltages and such, based on the battery output. When battery output is 0, meaning dead/removed battery, the daughter board doesn't supply voltages to the mainboard.
Now, you could replace the battery with a supercapacitor, but you'd need to have a pretty big one to output the current of a fully charged battery of the 6P - something around the 10kf mark, which IIRC from my university days, is roughly the size of 2 D-cell batteries or so. You'd then need to wire this all in, and even if you made it neat and 3D printed a new back, you went from a slim phone to a small brick. You'd also still need to provide current to charge the super capacitor, which doesn't use normal voltages like the charger and daughterboard can output, so you'd need to add in a voltage regulator board, wire that to the daughterboard, let the DB send current to the mainboard, and since this all outputs a lot of heat, now you run into a serious heating / cooling problem. Add a fan, a larger super capacitor to power said fan, and well, you now have something that looks like a bomb lol.
To touch further on the heat problem - my dash camera has a 10kf SC in it that I wired in instead of the crappy NiCad battery it came with. It was hot enough to keep the snow melted through the windshield on its own with 12v 1a current - roughly 20% of the current the wall charger of the 6p provides. It didn't keep the whole windshield free, rather, a spot large enough to let the camera do its thing without issue.
Thanks Wiltron for your reply. Doesn't seem worth it for me to go through that much trouble to be honest, besides, having something in your car that looks like a bomb these days will get me more attention than I want. I do have to say that I'm able to power the phone with just the charger connected, but up to a certain point, when the cpu spikes while booting it runs short of power and shuts off. Same thing when I'm fully booted into android, I disconnect the battery and it will stay running up to the point where I start some app or even just turn the phone on its side and the phone just goes dark. I'm thinking that the daughterboard does provide power to the motherboard without a battery, but just not enough. Do you think a heftier charger might overload the circuitry of the phone?
cbgreen said:
Do you think a heftier charger might overload the circuitry of the phone?
Click to expand...
Click to collapse
It can provide as much current as normal operations permit, however just make sure the cable and charger are official and supported, like Benson certified cables and a decent quality car charger like Anker.
Don't go crazy with the 50amp 120v brick chargers for cars, but don't grab the cheap ass gas station 0.5a 5v 4 for $10 special either
Tronsmart has good ones - I use one personally that has the certified USB C cable built into it.. minimal issues other than the thing does get hot

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