I've had my transformer for a little over a month. Today I notice that I was getting shocked by my transformer. It isn't really bad, kind of like a 9 volt battery.
Is anyone else experiencing this? could find it on the forum.
Are you sure it wasn't just static charge, since you only had it once, as I understand. And I don't get shocked by 9v batteries, I can only taste them when putting them on my tongue
Happens to me occasionally (only when docked), and I've seen several other people mention it here. I think it's just a grounding issue.
Noticed something similar yesterday. TF docked and charger pluged in. When touching the dock there was a small electric prickle. First thought of static charge, but it remains until I removed the charger.
mee too, got an eee pad with dock today, first charge, touching the dock I get a small eletric shock....
Any solution?
It's a common issue. The back casing of the Transformer has some current in it and if you touch it under certain conditions you can meet the cold metallicly feeling you get from something like a 9v battery on your tounge. I don't believe their grounded properly. If you hover your hand 1/4 inch from the back of the case you can also feel it.
I just had this.
Turn your power adapter the other way up. As in, take it out of the wall, turn it the other way up, and plug it back in.
There is a thread in this forum.
Strangely enough: the solution is to flip the charger round.
I can confirm turning the adapter 180 degrees and then plugging it in the wall socket again stops the buzzing feeling when touching the tablet and dock.
Doesn't give me a good feeling on the overall build quality. Even worse now my dock has stopped charging.
After some weeks I never got again that electric feeling on the dock.. it seem's that it was electrostatically charged when it was new...
My charger squeeks. When the tablet (or dock) is plugged in, and is fully charged, the charger starts squeeking. When I unplug the proprietary connector from the tablet/dock the noise stops. Whenever there is something to be charged (either dock or tablet), the squeeking stops.
So basially, the charger only squeeks when it is plugged in and not actually chaging, and does not squeek when it is plugged in and 'idling'.
Anyone else have this issue? I have a European/Dutch outlet connector btw.
Sent from my ASUS Transformer Pad TF700T
Vo01985 said:
My charger squeeks. When the tablet (or dock) is plugged in, and is fully charged, the charger starts squeeking. When I unplug the proprietary connector from the tablet/dock the noise stops. Whenever there is something to be charged (either dock or tablet), the squeeking stops.
So basially, the charger only squeeks when it is plugged in and not actually chaging, and does not squeek when it is plugged in and 'idling'.
Anyone else have this issue? I have a European/Dutch outlet connector btw.
Sent from my ASUS Transformer Pad TF700T
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Click to collapse
Same here, and it is normal behavior and nothing to worry about. As far as I know, it's just a higher frequency version of the well-known 50Hz 'hum' and has to do with electronics in the charger. Most transformers (i.e., power converters) have this, as even when you unplug your device, there is still induction going on in the secondary spool of the transformer, and therefore, it is still 'working', albeit with no actual, useful output.
That's also why a power converter still consumes electricity if you simply unplug a charged device and then go to school/work/whatever -- to stop it from '' bleeding', you need to unplug the charger itself from the wall socket.
Check some others you may have laying around and if you put your ear close enough, you'll hear them doing it too. Hell, even my television set does it.
Eek, Dutchies invasion!
Anyway, Yep, same here.
You guys sure it isn't a Dutch plug problem? That's three of us now..
I've noticed this on mine here in the US, but I'll try to pay more attention and see if it does it on our 60 Hz frequencies or not.
Sent from my ASUS Transformer Infinity Running Tapatalk.
johnlgalt said:
I've noticed this on mine here in the US, but I'll try to pay more attention and see if it does it on our 60 Hz frequencies or not.
Sent from my ASUS Transformer Infinity Running Tapatalk.
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Itwill probably do exactly the same, although at a 20% higher frequency. EDIT: actually, that might be a good thing if you're slightly older, for I must admit the frequency of the beep is very annoying (I have pretty good hearing, and the tablet signalling it is charged from next to my bed is irritating to say the least....).
And, err... yeah, it was kinda obvious this attracted a lot of attention from the Low Countries. Luckily, I am pretty sure we all have the same kind of electricity (and applicable laws of physics).
Annoying is understating it just a tad... The noise is reminiscent of a humongous mosquito on steroids preforming a carnaval fanfare at 0200. Only this one I can not silence with a good whack from a swatter. (Bit expensive..)
Oh no! I have a very special kind of Twents electricity! The non-existent variant. Dear Essent, kindly put your football reruns on pause and get your lazy arses back to work! :silly:
Send form my HTC HD2
ShadowLea said:
Annoying is understating it just a tad... The noise is reminiscent of a humongous mosquito on steroids preforming a carnaval fanfare at 0200. Only this one I can not silence with a good whack from a swatter. (Bit expensive..)
Oh no! I have a very special kind of Twents electricity! The non-existent variant. Dear Essent, kindly put your football reruns on pause and get your lazy arses back to work! :silly:
Send form my HTC HD2
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Yeah, the Dutch electricity is among the best in the world... IF you have it available. Seems we're having cutouts more often than in the past, although that might be me getting old.
When I charged the 700 overnight for the first time, my girlfriend/now wife poked me awake -- since I hold the designated household mosquito killer position -- that there was this HUGE mosquito that needed swatting. She said it sounded so humongous that she was scared that if the thing would bite, she would be sucked empty as a flat tire. :laugh: I saw nothing, obviously, only hearing a slight beep, only finding out the most probable suspect the next morning.
Yes, they do seem to become increasingly more common... Probably because the companies have a hard time realizing the calendar says 2012 and not 1912 Ironically, they nearly always coincide with a football match...
That was one very expensive 10,1 inch sized mosquito! :laugh: At least it doesn't fly... (I hope not O_O)
Vo01985 said:
So basially, the charger only squeeks when it is plugged in and not actually chaging, and does not squeek when it is plugged in and 'idling'.
Anyone else have this issue? I have a European/Dutch outlet connector btw.
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Click to collapse
Another NL here, I hear it too. I usually have it charge next to my bed, as well, and the sound sometimes wakes me up. It's not uncommon though. I have a charger from a Dell laptop that has the same issue.
xcal321 said:
Another NL here, I hear it too. I usually have it charge next to my bed, as well, and the sound sometimes wakes me up. It's not uncommon though. I have a charger from a Dell laptop that has the same issue.
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the chargers use choppers . please do search on wikipedia or google about them. it is a normal behaviour . you are welcome my friends
Sent from my GT-N7000 using xda app-developers app
gbb14 said:
the chargers use choppers . please do search on wikipedia or google about them. it is a normal behaviour . you are welcome my friends
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Yea we figured as much
We're just doing what us Dutchies do best: Complain to eachother about it.
MartyHulskemper said:
Itwill probably do exactly the same, although at a 20% higher frequency. EDIT: actually, that might be a good thing if you're slightly older, for I must admit the frequency of the beep is very annoying (I have pretty good hearing, and the tablet signalling it is charged from next to my bed is irritating to say the least....).
And, err... yeah, it was kinda obvious this attracted a lot of attention from the Low Countries. Luckily, I am pretty sure we all have the same kind of electricity (and applicable laws of physics).
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Click to collapse
I have an unusual sensitivity to high frequency noises. However, I misstated my original post - I meant to say I have not noticed it thus far.
I am slightly older (41) but I also have tinnitus in my ears, so it's a bit strange that I am s attuned to high frequency noises at all. Maybe if I am lucky, the whine is at the same frequency as the ringing in my ears, and it is thus in phase or canceled out?
johnlgalt said:
I have an unusual sensitivity to high frequency noises. However, I misstated my original post - I meant to say I have not noticed it thus far.
I am slightly older (41) but I also have tinnitus in my ears, so it's a bit strange that I am s attuned to high frequency noises at all. Maybe if I am lucky, the whine is at the same frequency as the ringing in my ears, and it is thus in phase or canceled out?
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I dunno -- I'm 33 years old and have tinnitus as well, and I am very high-frequency sensitive, as well. Might be the condition in itself, or maybe everyone has tinnitus when you'd measure but most people just do not have the hearing to pick it up <?> -- talk about bending a disadvantage to something positive, hahaha! It depends on the build and proportions of your inner ear, though, which explains why I pick it up so clearly and you seem not to. Call yourself lucky though, for I have taken to charging it during the day when I am at home and busy with the kids, or in the hospital during a shift, when I don't have that much time to play around with it anyway. I try to avoid the overnight charging at the moment; I might pick it up where I left if/when my hearing goes south and I can't make it out anymore.
EDIT: slightly (at best) off-topic, but can you hear the power converter of a cathode-ray television set when you turn it on? I can hear all kinds of electronic equipment being turned on -- with the volume down to zero, obviously, for the humorously-inclined in here.
I'm just wondering. Switching power supplies typically operate between a few hundred KHz and a couple of MHz or so. To keep the same output voltage when there is no or very little load however, they often employ a "hiccup" mode. It wakes-up at, or near ultrasonic frequencies. At 240V input, it hiccups at a lower frequency than at 120V, shifting down to the audible range. It's likely that the magnetic components employed resonate acoustically, so only certain load and input voltage range will result in an audible pitch. It may not help with the problem, but at least we could have some sort of an explanation handy?
If the squeek is too loud though, I'd be thinking to RMA it and try to get a quieter one. I can't hear mine unless I put the adapter to my ear. I wonder how common the problem is? If the vibration is too strong though, some components could eventually fail.
If I can dig it up again, I'll hang the TF700 onto the USB wall charger thingy I have -- I can transplant the cable, so that shouldn't be a problem. What could be a problem, however, is its charging capacity -- I can see how the Tf700 outruns its supply, at least when it's trying the charge it while the 700 is running... (Kinda like trying to charge your car battery with rechargeable AA batteries. )
MartyHulskemper said:
If I can dig it up again, I'll hang the TF700 onto the USB wall charger thingy I have -- I can transplant the cable, so that shouldn't be a problem. What could be a problem, how ever, is its charging capacity -- I can see how the Tf700 outruns its supply, at least when it's trying the charge it while the 700 is running... (Kinda like trying to charge your car battery with rechargeable AA batteries. )
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You're right. I think if you are using any USB charger to charge TF700, you might get disappointed. It'll be the same as charging it via any USB port, verrryy slowly... The thing is, TF700 internal charging circuit must be limiting the power it draws to less than 2.5W, since USB 2 standard limits consumption to 0.5A. The Asus tablet charger's label indicates that it can put out 2A at 5V or 1.2A at 15V. On the other hand, the tablet's cable uses a special USB plug that has a fifth pin deep in the middle. So, don't use any USB extension cables to charge when you're in a hurry. When the tablet's USB cable is plugged in, the Asus wall charger detects this 5th pin then steps up its output to 15V. Now the TF700 can draw as much as 18W to charge its battery and to power the tablet simultaneously. Sorry, I'm getting off topic here.
Hey there,
I've owned three nexus 5's and I just bought a 4th and I notice that the back makes a slight buzzing sound when charging. I know the LG wall chargers make a sound but this is coming from the device itself. Only happens when charging and the phone keeps a good charge so I don't thinks it's a faulty battery.
Sounds like it's coming from the middle to top part of the rear, where the battery connects to the logic board. Could it be a faulty battery, just a transformer or something more serious?
Also I left it charging for 7 hours overnight, no issues.
Thanks in advance
Anyone?
For me it has no noise while charging, but the charger gets very very hot. Pay attention to your device while charging, check if the device or the charger temperature is higher than it was supposed to. For me the charger might get to 70ºC, it almost burns my hand sometimes mainly if charging 2 devices at once.
Have you tried plugging in a headphone to it and see if the noise goes with the audio?
LukasFS said:
For me it has no noise while charging, but the charger gets very very hot. Pay attention to your device while charging, check if the device or the charger temperature is higher than it was supposed to. For me the charger might get to 70ºC, it almost burns my hand sometimes mainly if charging 2 devices at once.
Have you tried plugging in a headphone to it and see if the noise goes with the audio?
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The charger is fine and the buzzing/humming sound isn't coming out of the speaker, it's coming from the rear of the phone itself. Temperatures for phone and charger are normal.
I got the phone for awhile,
the phone itself is running very well.
but i have another concern,
i start to hear the super charger when it is idle (not charging but plugged into the wall)
when it is charging, it is completely silence.
Do you also hear the noise from the charger too?
Can't say I have noticed that. But I always turn chargers off when not in use. It's safer.
I sit close to one at night, in total silence, and I can't say I've ever heard any noise coming from it.
Sent from my MHA-L29 using XDA Labs
Yeah, I heard it too. I have two chargers and both do the noise.
What kind of a noise? Like a humming sound? Electrical buzzing?
Sent from my MHA-L29 using XDA Labs
Better call them Ghost Buster folks.
On a more serious note, never experienced anything like it. Turn off your charger when you're not using. Better charger life longevity.
This has been a thing with LG chargers for years. For some reason they just hum or buzz.
I wouldn't worry about longevity tbh. Any good quality charger will largely outlast the device it hooks to. Heck my 1995 Motorola Flare charger still works.
If the buzzing gets on your nerves you can always get one of those cheap socket adapters with an on/off switch (see attached).
Sent from my MHA-L29 using XDA Labs
I used to get that on my old Samsung chargers. Never heard anything with my mate 9 charger tho. I wouldn't worry about it if I were you.
Thank you for the input for using a switch to turn it off when not using...
but the most important point is, i have a friend who also own a Mate 9, his charger is dead silence when charging or idle.
The sound is more or less like buzz (but very little sound)
rayraymond said:
Thank you for the input for using a switch to turn it off when not using...
but the most important point is, i have a friend who also own a Mate 9, his charger is dead silence when charging or idle.
The sound is more or less like buzz (but very little sound)
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I can confirm your charger noises. Wired thing. Better unplug the charger, because noise means it is burning up energy!
Not to be dumb but is it your outlet? Have you tried a different one? Mine is completely silent
rayraymond said:
I got the phone for awhile,
the phone itself is running very well.
but i have another concern,
i start to hear the super charger when it is idle (not charging but plugged into the wall)
when it is charging, it is completely silence.
Do you also hear the noise from the charger too?
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Click to collapse
Notice this as well one night while reading on the phone in bed. Mine does it with or without charging. I've also experienced this with a Sony adapter, and Samsung. I have a few devices plugged into a 8 prong switched grounded outlet... I just flip the switch off in the morning and this this actually lasts until bedtime??
rayraymond said:
I got the phone for awhile,
the phone itself is running very well.
but i have another concern,
i start to hear the super charger when it is idle (not charging but plugged into the wall)
when it is charging, it is completely silence.
Do you also hear the noise from the charger too?
Click to expand...
Click to collapse
Phone chargers are step-down switching power supplies.
They are called switching power supplies, because electrical current flowing into coils or capacitors is always switched on and off to get a desired amount of electrical energy saved inside this energy storages to get lower voltage than the power line. They are verry efficient and much smaller than conventional ones.
Because of the current switching the plates of the capacitor or the windings of the coil can vibrate and cause this sounds.
It depends on the components if there is a sound or not and can vary from batch to batch.
So no worry if the supply creates silent noise, its working fully, only different components are used! (as long as it is no super cheap china power supply, they could be very dangerous)
And i think the power supply lives as long as the phone. Computer or TV power supplys are always plugged in too and they have the same technology.
But i always unplug the power supply to save enegy