Loud speaker does not work. how can I troubleshoot further?
My iPhone 4 suffered water damage where it sat in a puddle of rain water for an hour. I dried it thoroughly in rice for a week but when it was dry, the screen and loudspeaker had stopped working.
I replaced both the screen (LCD + Digitizer) and replaced the entire dock port assembly (Port, ribbon connector, WiFi Antenna, Loud Speaker) and the screen now works, but the loud speaker still does not. The first time I turned it on, the loud speaker did make some distorted noise if I turned the volume up at least half way, but it has stopped making any sound since that initial time.
So as it currently stands, I have EVERYTHING working except for the loud speaker. I tried taking it back apart to make sure the loud speaker is seated properly and that all the screws were tight and everything seems to be installed correctly. I just have no idea how to proceed further and am hoping some of you might have experience with a similar problem.
So here are the facts:
-The phone is absolutely dry. that whole rain thing happened about a month ago and I checked everything when it was apart and there is no moisture in the phone.
-The two connector plates that the loud speaker terminals rest on to make a connection seem to have voltage across them if I touch a volt meter to them when music is playing. EDIT: The voltage here seems quite low compared to measuring the voltage that comes across the headphone jack when outputting to headphones.
-I've checked the headphone jack and proximity sensor to make sure they are both functioning properly and they seem ok.
How should I proceed from here? are there further things I can do to troubleshoot this? Is it possible that another part on the phone needs to be replaced other than the loud speaker (which I already tried replacing)
Any thoughts or ideas would be greatly appreciated. Thank you so much for your time!
Update: I have discovered that if I turn the volume up ALL the way and press the phones speaker into my ear and sit in a quiet room I can hear the sound of the phone... BARELY... like, its so faint that you would never know sound was coming out of it.. I hope this information helps in some way.
Update 2: I took my loudspeaker out and plugged a headphone cord into the headphone jack and touched the loud speakers leads to the other end of the cord and it produced wonderful sound that way, so its not the loudspeaker.
Thanks everyone!
Это хороший вопрос?
19 Комментариев
Heres another weird thing. In regards to being able to hear the loudspeaker BARELY if I press it against my ear... I can hear it regardless of if the phone is switched to silent mode or not.
Silent mode appears to work properly though. It makes the phone vibrate as it should and everything so I'm not sure if that is related to the problem or not... Could the loudspeaker be stuck in a silent mode volume level while the rest of the phone is accepting the silent mode toggles correctly?
из blakepro
Gave you a + for thorough post, hopefully someone can provide you with good information!
из Collin MacGregor
iv the same problem, and iv also done the same tests as your self , i hope we get the ans were looking for
из jason
Lets make sure to keep all the info we learn here so everyone can benefit from what we discover. I have scoured the internet and there is basically no information about this type of problem at all out there. (Or if there is, its buried under thousands of posts from people complaining that their second "speaker" (microphone) doesn't work and such...) Or, most of the cases that sound close to this end with the person returning the phone to apple, which wont work in this situation.
I have re-confirmed that the speaker on my iPhone started acting up BEFORE the water incident, so I don't believe it is related to that.
I'm even considering hard wiring in some leads from the headphone jack directly down to the loud speaker just to get some sound out of the thing.. Problem is, that not all the phones sounds come through the headphone jack. Some are ONLY come through the loud speaker. Plus there are other problems that arise with that type of setup, but it might be my final desperate action if I cant resolve this.
из blakepro
have you checked the nearby fuses etc? I'm no iphone 4 expert but in the 3g there are noise reducers/inductors/fuses? near the dock(on the motherboard side) that the speaker is in that can blow and cause these sort of problems..just an idea.
из pollytintop
Показать 14 больше комментариев