I purchased the wireless charging cover for my Droid 4, and two LG wireless charging pads for work/home. I can't stand the beep it makes when it begins charging.
I opened up one of the pads, hoping there was an obvious speaker with some wire leads I could cut, but it's not obvious to me what makes the beep. I've attached a picture of the board if anyone has any input. I'll update this if I figure something out.
Here's a guy that pulled a speaker off the PCB with pliers, but didn't describe which component.
The speaker is actually the large box at bottom-right. I ran a knife around the edges and pulled at it with some pliers, and the top of it came off like a cover, with some piece inside. The beep is no longer emitted without this piece.
at first i couldnt figure out how to remove the back but found the screws under the four rubber nubs.
I followed the directions on the amazon link posted and pulled the entire black box off from the circuit board!
I put the thing back together and it now charges silently. I really dont see how this thing ever left the design room after the prototype was made with that terrible beep sounds
Component PZ1 (Bottom Right on that picture) is the buzzer. The other black thing with glue around it (Reference L1 on the silkscreen) is an inductor, which is very likely to be part of the charging circuit or voltage regulation circuit, removing it would end in tears, as was the case with one of the guys on that Amazon page.
Also, I strongly recommend against yanking parts off PCBs with pliers. Depending on how strongly it's held on you could crack the circuit board or damage neighboring components. You really want to clean away that adhesive, being careful not to cut the PCB, and then use proper desoldering equipment (soldering iron and solder wick, hot air gun, etc.) to remove the speaker.
What's the best way to get the back cover off? I can't seem to rip the rubber nubs out.
Ok I got the back cover off, but I'm having a hard time taking off the screws that hold the circuit board to the back.
Little Green Robot said:
What's the best way to get the back cover off? I can't seem to rip the rubber nubs out.
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I have a hard time with mine as well
Sent from my SGH-T989 using xda premium
Ok, I finally got sick of hearing that annoying beep. So I searched it and found this post. Did the deed and fixed it. Thanks for all the help.
Now, I would also like to find the notification sound that comes on when I place my phone on the pad.
If I turn my phone sound "off" it doesn't make the sound (obviously). But I have gone through all the settings to try to find where I can switch it off permanently.
Unfortunately I can't find it. I thought it would have been under Settings/accessory/Dock Sound but that was not it. Does anyone know how to turn off this notification???
Related
Hi,
The speaker on the outside of my universal (the onw you hold against your ear with when the screen is on the inside) is broken.
That started as something like a bad contact (if I pressed the phone against my ear it would work, otherwise not). Now it is not working at all.
The speaker on the LCD side is working fine.
The advice I want:
I took a look at the service manual PDF I got and disassembling the phone to reach that speaker is a lot of work. I do have experience with diassembling electronic devices and even do some soldering, etc. However, my doubt is this: I have a phone which does work, but the way I like to use it to make calls does not work.
Question 1
Is it worth the trouble to diasassemble the whole device just to check if it is indeed a bad contact due to i.e. dirt? Or will I actually risk breaking something off, which will render the complete phone useless? Looking at the service manual, one needs to use a plastic tool to actually open the phone. How easy do the hinges break off?
Question 2
Has anyone had a similar problem? Was it easy to fix?
Thank you!
Cheers,
vma
you dont need to disassemble the whole phone just disassemble the screen . It isnt that hard to do, just remove all the screws from the screen . The screen casing is difficult to budge at first but once you have freed part of it open, the rest follows quite easily.
Hi,
Meanwhile I couldn't resist and opened it...
...and I found the guilty part.
It seems that the outside speaker is actually attached to the case and uses a contact connection to the PCB. This connection is made by to metal plates, which are tiny and folded. They will compensate the varying pressure made on the case (i.e. when you press it) and I guess with time they tend to break at the fold.
This happend to one of the two contacts. First I tried to fix it, but the truth is that it is so small that it is quite impossible to do anything about it. I considered soldering a small wire, but that would require to solder the other end to the pin on the PCB, which then would mean, I could no longer use a regular replacement speaker, if this one had any other fault (unless I could clean the contact again, but trying that, I could break something else, also).
This means: now I am not able to use the outside speaker anymore...
Question: where can I purchase a replacement one? Would anyone sell me one from a broken Universal (for a symbolic price - anything over 10 Euro is too much, as I would prefer to just buy a another second hand Universal)?
And as I was figuring this out, I used the occation to fix that loose stylus!
1) Open the underside case (4 screws, then open the case all around with some thin plastic).
2) Roll a little bit of celotape and place it between the case and the pin that fixes the stylus in position.
3) Try it out until it is OK.
4) Close the case and that's it!
Cheers,
vma
Hi buddy, in fact I did have the same problem that you're having some months ago, my uni fell and since then the problem just got worst, until some day a couple months ago I opened it and fix it.
It's just like you say, the little golden plated contacts wore off, then the little speaker's metal plates just were too high to make any contact against the pcb, it's really simple, just pull the plates gently away from the little speaker, do clean both sides of the contacts (pcb and speaker's plates), i did this with a little xacto knife (be very gentle), and that's it! It worked just fine.
The problem is that in my case one of the metal plates broke off.
I tried to fix that, but it is to small for me to achive anything.
Cheers,
vma
Hello People,
I've got a little problem with my hd2 ^^
Since several weeks, the plastic from the LED's was pushed inside the device and so the vibration alarm wasn't really silent anymore (since the vibrator is behind the led plastic and it touched it inside).
So now I decided to open the device an push the plastic back in it's place.
Opening the device was really hard because of the massive glue they used^^
But after some minutes I got the electronics out of the body. I cleaned it a little bit up, fixed the plastic an put the device back together.
Starting it, confirmed that the vibration now works silent again, but my screen stays black...
I really don't know what happend there , but I never touched the screen or openend the device more than I had to.
So maybe anyone has an idea?
THanks a lot.
First thing is that i dont understand where you finded "massive glue" if you just opened your phone to place back leds cover/zoom plastic. They dont use glue, only adeshive stick tape. But this is just interesting for me.
Second thing is: are you used some minimalistic bead when you placed back leds cover/zoom plastic? If you didnt, then it can drop again to inside.
If your screen is black then maybe you just acidently touched connector and ribbon cable, where lcd connects to motherboard. You must open your device again and recheck. This connector attached with ribbon cable at lcd must be sealed with yellow tape.
Hello,
sorry a meant adeshive stick tape ^^ I was just hacked off when I wrote this
yes, I put something on the led plastic.
I checked all the connectors and also watched a video where the disassemble the entire phone in order to see where I could have damaged or removed something. But as far as I can see, there is nothing loose or missing. I didn't remove the mainboard; I just took the device out of it's outside cover.
Hmm, i dont have idea whats wrong then.
I opened mine phone not once. Also replaced more 5 HD2 digitizers and lcds. All time dont had this probelm.
Are you sure you dont had static electric on your hands?
yes, I was protected against static electric.
maybe I'm gonna disassemble it totally and see if something else is loose.
Turning it on works, because the vibrator triggers once.
And I just realized that the power led does not work when I'm plugging the device in...strange
I'm hoping somebody with some knowledge of the HD2's innards can help me...
My vibration stopped working on my HD2. I found the plastic LED flash cover to be 'pushed in' (with the help of a couple xda threads I dug up). Others said it was an easy fix: Open the case and push that piece of plastic back into place.
I opened up the case to correct it. But after putting it back together not only does vibrate not work, but the volume keys, speakers (both earpiece and speakerphone), flash, notification led, and camera all don't work.
I obviously screwed something up, but I have no clue what it could have been. I was very careful. One thing I'll note is that when I pulled the case apart, the plastic volume rocker went flying. When putting the phone back together I got it back into place so that I THOUGHT it should work (it was seated properly and felt "clicky" for up/down movements.
But clearly wasn't just the volume rocker that was affected. It doesn't seem that I pulled anything else loose or anything like that...
But no luck, all that I listed above is non functional, and what I'm left with is a glorified 3.5 in tablet
Any ideas?? Thanks in advance!!!
Snapped a couple quick pics which may help:
http://i50.tinypic.com/mmsa36.jpg
http://i47.tinypic.com/sl1kdx.jpg
Unfortunately when comparing these to other pictures of the inside of the HD2 that I found online, I fail to see any differences, or anything I could have inadvertently screwed up.
Most likely you screwed up(or disconnected from motherboard) somehow your main flexboard, but your picture are not usable for this, you should take off your motherboard+main flexboard from chassis to have a full view!
You probobly just disconnected a small cable. I have no idea of the HD2 innards but did multiple repairs of small stuffs and the flat cables hold in place by a plastic clicker pull out easily - just reopen and check them all, you should be fine.
Thanks for the input! I figured it's something like that, just one small cable. But I didn't even take off the board at all... The pictures show the full extent of the disassembly... Do we still think it's necessary to disassemble it further?
I checked all visible connections, but yeah, maybe I somehow yanked out something that is NOT visible. I'll try to check again today... In the meantime, any more ideas from anyone else? Thanks!
For al that to be not responding I would assume main-flex damaged or as mention before maybe connection to mainboard got moved during pulling cover !
Volume button can be troublesome, sometimes the little plastic caps come off but if it felt clicky should be good in that respect.
also be very carefull of thin spring metal legs that contact antenna pads on back cover, one near screw above & right of vibro motor looks a to be a bit flat. They bend easily & break easily too ...
Have u tried starting up the phone without the backing? I had this issue when I painted my housing the led cover was stopping the motor from spinning but if i took out the backing it works. So I just trimmed the led cover and now it works.
Mister B said:
For al that to be not responding I would assume main-flex damaged or as mention before maybe connection to mainboard got moved during pulling cover !
Volume button can be troublesome, sometimes the little plastic caps come off but if it felt clicky should be good in that respect.
also be very carefull of thin spring metal legs that contact antenna pads on back cover, one near screw above & right of vibro motor looks a to be a bit flat. They bend easily & break easily too ...
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I'm nooby with regard to this stuff; I only attempted the repair since I read in a couple other threads about multiple self-proclaimed non-super-tech savvy people were able to open it up and move the plastic LED cover for an easy fix.
So what exactly am I looking for with regard to the main-flex? Where is it? I thought I wouldn't really see that unless I removed the board which I haven't done... is it still possible I knocked it loose or damaged it? I didn't think that would be possible since I ONLY removed the back cover (though it does take a slightly uncomfortable amount of force to do so, so I guess anything can happen...).
If not the main flex cable, is there anything else specific to look at which may be disconnected? It seems to be all the stuff at the top of the phone that fails to work (camera, speakers, vibration, flash, volume keys). While the stuff on the bottom (other hardware buttons, charging jack, headphone jack, etc).
THanks!
I have given up. After being stumped briefly how to hard reset the device without the volume keys working (I have Android installed), I was able to do it via ADB from the Android dev kit.
To ebay I go...
Alright, I didn't make this fix, but I don't remember who did, but it was someone in a youtube comment. Before attempting this, are you sure your charger isn't just dirty? If it is dirty, it's preventing the rubber o-ring from getting a good seal. Take a piece of tape that won't leave a residue, and take off as much dirt as you can. If it still slips, try this fix. Okay, so the fix goes like this:
1. Turn your charging orb upside down. There should be a rubber ring on the bottom that prevents the orb from slipping, and it puts it at an angle. Remove it, but don't throw it out, and try to keep the adhesive intact.
2. There should be two small black tabs on the rubber ring. Cut these off with an exacto knife or a similar tool.
3. Turn the ring 180 degrees from where it was before, and carefully apply the ring, making sure there are no bends or bubbles in the ring.. This way the thicker end should be facing the front, makes the angle a bit less obtuse.
4. Give your nexus 4 a good wipe, so there's no dirt on that, and put it on your charger. It shouldn't slip anymore! I hope that this helped you. It did for me!
So i think that i somehow got a small stone in my headphone jack (it could be something else but it's most likely a stone) and now i wonder if i somehow can get it out or if my only option is sending it in. My headphone cable goes in halfway so i get sound in one side but it's not going all the way down.
Edit: I solved the issue by first removing the rock and then using a toothpick with a brush like tip which immediately removes a piece of cloth dust from my clothes. It seemed as if I had both a rock and this cloth dust in my headphone jack, what are the odds.
First, with a lamp, try to see what's inside it, and until problem is fixed, don't try to put your jack in, the stone would get stuck deeper and harder.
I would try first to suck it with a vacuum cleaner.
Next option is to try to gently unstuck the stone with a toothpick, and then to tap the phone gently on your hand, until the stone comes out.
chironfr said:
First, with a lamp, try to see what's inside it, and until problem is fixed, don't try to put your jack in, the stone would get stuck deeper and harder.
I would try first to suck it with a vacuum cleaner.
Next option is to try to gently unstuck the stone with a toothpick, and then to tap the phone gently on your hand, until the stone comes out.
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Ok so I followed your steps and got out I small Stone using the toothpick but my iems still won't go all the way in. They are now going enough so I get sound on both channels but the mic isn't working. My headphones at home however go in all the way with a satisfying click sound as usual. Could there still be a tiny bit of something in the bottom and is so how do I get I out? I didn't see anything with a flashlight but I suspect that whatever is there it must be smaller than the difference on my headphone cable jacks which is like 0.5mm.
Cool you could solve it. About the lint, same sh.. happens with usb keys that do not have covers.
edit: I've just had the same issue with fast charging. I removed lint from the connector and everything is back to normal.