Iphone back light won't work.

  • Question
  • Updated 1 year ago
My iphone 3g's backlight wont work. Meaning that the screen is completely dark unless you put the screen in direct light. I checked settings and tried to checked the "brightness". The brightness was half way, so I decided to raise it all the way and my iphone's back light worked for half a second. I was confused. I went to apples website and followed the troubleshooting provided. Nothing worked. I tried to reset the settings. I restored it. Nothing works.
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Rosemary

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  • frustrated

Posted 6 years ago

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My screen went out too when i got the phone wet. I thought it was dead. I did a system restore, but still had no backlight. Then I messed with the brightness settings and the lights kicked back on.

Try a system restore, then tweak the brightness in the settings app.
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Chelsea Lisk

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it's works so far.
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rajandevkhosla

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Genius - worked a treat. Thanks
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Jenny Simmons

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mine still won;t come on... keep tweaking?
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FoneFixer

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iphone 3gs coil

fixed mine i got the coil from a guy on www.fonefixer.webs.com, they even explained how to replace the coil...

www.fonefixer.webs.com
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tinner105

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This guys price are outrageous. he wants $14 for one coil.
go here parts les expensive ($3.50 for the coil shipped) cheaper and he can repair it for you as well.

http://www.ebay.com/sch/tinner105/m.h...
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durianwool

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Paultheplumber - you're my saviour! Hail the Paultheplumber!! My wife very wisely put a bottle of water and the phone together in the handbag, and ... well suffice to say, it forced me to google for this. Anyway, I did take it apart first and there was a bit of water inside.

I left it to dry for a few days, and powered it up again. All worked except for the backlight. I was ready to order a new LCD when I saw some poor bloke bought a new LCD and it still didn't work.

So I was ready to send it in for paid repair (it is still under warranty, but I guess Apple would reject it -- although the water sensors still are white), then I stumbled upon your post ...

Thank you! THank you! Thank you! Cheers & beers to you matey!
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Rosemary

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well no one helped me. but i got it to work.
i did tweak around the brightness settings and it lit on for a second and then it went out.
i fully charged it, tried it again, and it went on for hours...it still has the backlight problems but it sometimes turn on :(
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tannernwebb

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if you want it to come back on quickly keep hitting the lock and unlock botton on the top and the backlight will come back on
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Rhys Lancaster

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ur ment to let them die then charge nd turn on mine dose it alot i have no lock button restore and sometimes pluging it in to my computer helped but not this time
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Skizzle187

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I put a broken LCD on my phone and it lights up bright white but when I put a good LCD it's dim any suggestions???
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Marcus Leon

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you can get both the backlight coil and IC from here with video 101 soldering tutorials http://www.cyberdoctormd.com/
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durianwool

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Rosemary, since your backlight is intermittently working -- shouldn't be considered a 'fault' that should be covered by warranty? Did you try to send it to Apple? Actually, mine although has its backlight on is still not stable as it flickers a bit, and sometimes goes completely off.

In any case, from the looks of all three cases here -- it doesn't look like an LCD problem since it does work. It looks more like some kind of dirt problem due to the moisture. I wonder if it is possible to disassemble the whole phone and dunk it into a chemical wash like they do when the originally manufactured the electronics.
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Rosemary

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thanks. i did go to apple store and they saw that my iphone was wet. From where the charger port is at. Yes. I'm going to buy a Ebay auction for $12, that they do that chemical wash. I hope it works. Thanks for your help.
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uncleba

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Thank you thank you thank you

I dropped my phone in a bowl of water (let's not talk about what kind of bowl or which room of the house it was in) for a brief 2-3 seconds. The screen started blinking and streaking with lines, I wish I would have thought quicker to turn it before it way completely haywire. anyway I did what I could to shake the water out, and used a hairdryer on medium heat to help dry it out a little but I was worried about overheating some of the components so I then just let it sit overnight. In the morning, everything seemed to work fine except the backlight. Luckily I read this post and went to the brightness setting and just had to move the slider bar a little bit and the light snapped back on. This was just minutes ago, so I can say it's 100% fixed but I don't anticipate a future problem.

*Update 24 hrs later.... So I let my phone charge up and went to run some errands, halfway through I checked my phone and it was completely dead again! I let it sit for several hours again tried plugging it back in to the charger and it responded, although it looked like it was completely drained of power. So I let it charge for a couple hours and then took it off. I was happy again and played a few little games and then set it down. When I went to pick it up again, same thing, no response :(

Am I doomed?
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gqmarti

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No it's not the end. I was doing exercise and put my iPhone in my sweats unto the washer. Since I am a clean freak I always do a double wash. I heard tumbling, but didn't think much of it. I was going to work when I realized my phone wasn't with me. I looked all over and found it in the washer fully soaked. Water in the screen etc.. I was devastated. I quickly took it apart all I could, and set under the heater for 4 days. Next I put It in the oven for half a day, with a low temperature that it would not melt anything, but evaporate any water. I put it back together and nothing. I checked the connections and found I didn't click the connector right. Again after recharging I tried. Nothing. So I just left the phone connected for several hours and tried occasionally and finally I saw the apple logo. My phone had a full restoration. I did gave a sensor problem and speaker. I used the headset to make my calls. All is well. Don't give up, iPhone is a tough guy.
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luddelindeberg

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Hey! got the same problem, i got to bed last night and listened to some music while i was recharging it, when i woke up this morning, my iphone was completly dead... when i got home from school this afternoon i could see the menus etc.. but the screen i so dark i can barely see it at all.

I've looked on apples page and i've tried everything but nothing works!!!

and i tried the thing that you guys did, but even that doesn't work.

This sucks!!
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xcho9495

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okay i just dropped my phone and the screen was already cracked and i just dropped it again and the backscreen light wasnt working. but before the backscreen light was already weird because in the place where theres suppose to be black the backscreen light bled through and stuff. but now it doesnt work at all helpPPPPPPPPPPPP
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Jason Simmons

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I fixed my backlight issue on iphone 3GS

I did the same thing. Got mine wet in the lake and got back and backlight did not work. Took it apart and got what water was left out. Put it back together. Phone worked but no backlight. So I decided to take it apart again as a last ditch effort a couple of days later. Wallah!!! I fixed it.

Here is how I got my backlight back to working.

You have to take about your iphone. There are instructions on the web to do this. Disconnect plugs 1 and 2 and ribbon 3. I had to remove number 5 cover cafefully. It will pop off. See the image. Just above the pointed out area of the coil, there is a small area of circuity. Mine had just a little bit of corrosion. Had to look hard to see it. I took a toothbrush with some contact cleaner and degreaser. Cleaned all the corrosion off. Put the cover #5 back on and both plugs and ribbon. Put the 2 screws back in the bottom. Pressed the button and top and low and behold, my backlight was on.

Hope this helps you guys.
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KB

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Ah now my screen is completely black... not just super dark after doing this. :(
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KB

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Ah now my screen is completely black... not just super dark after doing this. :(
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mariamontague

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This did not work for me. There's no change now. But it was cool to see my phone's guts!
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mariamontague

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This did not work for me. There's no change now. But it was cool to see my phone's guts!
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donnygat

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Hi Jason, Thanks a lot, I Had the same problem for a few days, after I dropped the iPhone on the floor, no water involved at all... Followed your instructions, although I didn't see any corrosion, closed everything and it didn't work for the first few times but a few seconds later the back-light was back on. Thanks a lot this solution made me very happy, it's too hard to look at the iPhone without the back-light. Again, Thanks a lot :-)
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markswi

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This worked for me too! Hairdryer, 48 hours in rice. Plugged it in. No LED backlight. Restored, adjusted brightness to 100% and it snapped back on.
Now the only thing that doesnt work is the power button but who cares.
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samsantoyo

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Funny enough, my iPhone 3Gs (ye... another water accident... involved with unexpected heavy rain during a gig).. had the same issue after several tries of taking backlight on again... I even searched for the "break apart" solution, but... bah... not that patient.

Suddenly my strange mind decided to start turning on and off the "silence mode" button... don't ask me why, maybe I unconsciously thought that the vibration would actually shake whatever was interfering with the backlight.

It's been working now for 4 hours straight without a problem... hope it stays like this, will keep you posted. (actually I was turning o/f the silence button, and the home one too, to see if it could lit up).

Anywho, strange stupid solution, but its working.
Cheers.
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aspasp

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For a 3GS iPhone, if the logic board looks clean and the backlight still doesn't work, this is the fix:


Full iphone 3GS backlight fix article is here
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david

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hello , do you have a similar fix for a 3g iphone backlight? thank you..
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aspasp

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David.. got one coming. should have it up in a few days
I will post a link here
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roy.trevor57

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hi apasp, I am unable to access the link you posted is it still workable?
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Marcus Leon

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try this link and get the updated fix http://www.cyberdoctormd.com/news-tes...
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david

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thank you look forward to the post
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david

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hello david, any luck with the 3g iphone backlight wire solution? thanks..
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Carlos

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My girlfriend just dropped it in the toilet. Apparently, sorry fixes it.
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laura

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i got my lil nephews juiceall over my iphone and the backlight isnt working and im really not technicall!! i dont even no how u get into ths board thingy!! or into the phone for that matter any hepl guys??
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laura

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i havet done anything to the phone just put it in sum rice! i dont no how to get into the phone its self!
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vipul

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If you have no Display light on the screen or dark screen. follow these steps :-

1.Check whether the phone vibrates. You can use the ringer switch located on top left corner. If it vibrates, you are luck. It means that the phone is getting power, but is not displaying any image.

2.Press and hold the Sleep/Wake button on top right corner of iPhone for a few seconds until a red slider appears, and then slide the slider. Then press and hold the Sleep/Wake button until the Apple logo appears.

3.Now connect the iPhone with the charger. Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds, until either the Apple logo or battery symbol appears. If the battery symbol appears, continue to charge iPhone until it is fully charged.
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Jason Simmons

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This may work on certain instances but if you have corrosion, it won't. You have to clean away the corrosion first.
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vipul

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Jason, you are right. If the phone is affected with water, its better to take it to the authorized service station rather than experimenting with the DIY tips.
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Jason Simmons

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Or you can try fixing yourself since your phone is already screwed up. Most places will tell you it can't be fixed and you have to get a new one. It can be fixed relativing easy if you follow my steps. I am 2for2 on fixing backlight issues that way. Doesn't make me no expert by no means but it does show where the problem area lies.
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aspasp

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Apple won't touch it if its been liquid damaged. They have indicators and its the first thing they check.
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david

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hello , come on you guys whos got a fix (hot wire )to fix a 3g ipone b/light not 3gs? anyone?
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vipul

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The authorized dealer would immediately know about the water damage. The best way yet is to bargain a buy-back for a new set.
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Joseph G

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i tryed everything in this post, my back light just stopped working out of nowhere ? ..........i gave it a good whap off my desk n whataya kno ..... back on good as new LOL .
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johnny

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ok i fix mines

maybe this will help you or not but here i go i drop mines in a toilet i took it and use the blower then it dint work i took it apart 3 days ago took the metal tap and clean everything whit acohol let it dry whit normal air i put it back togueter the back light was not working then i did the same clean it again
then the back light are goin to be off use the britnes seting to a 100% then charge the phone untill the next day there you get ur back light ......... but now i have a other problem you can hear when ur talking whit people and at first it was working perfect but no a big deal i use my head phone hope i help it took me 10 days to fix it good luck

if you guys need hel mail me johnny17j@hotmail.com
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Chan Kwon

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I changed my LCD and it has been working perfectly since.
I got water damage on mine, but thankfully it was emerged in the toilet for only a split second. That made all the difference.
I recommend getting your LCD changed as that is the main issue with back light issues. You can do it yourself from online tutorials or get it done by a local repair shop. If that doesn't work, a cheaper solution of cleaning your phone of corrosion (if water damaged in non-water liquids) or replacing you're coils.
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Jason Simmons

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Replacing the LCD does not fix the back light issue. Many posts on that in forums. It is the circuit board that gets controls the back light.
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Chan Kwon

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It depends on how long it was in water and what type of liquid it was if the backlight problem resulted from water damage. It worked for me, and I mentioned cleaning the corrosion and replacing coils.
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johnny

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clan the phone and charge it to the max
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Marcus Leon

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often times after water damage you will have to change the battery with a new one

iphone doesn't turn on at all with out a working battery

for more repair infor
http://www.cyberdoctormd.com/
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tinner105

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This guys price are outrageous. he wants $14 for one coil.
go here parts les expensive ($3.50 for the coil shipped) cheaper and he can repair it for you as well.

http://www.ebay.com/sch/tinner105/m.h...
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ryan

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I got my iphone two days ago and dropped it in about 4 inches of water, it didnt seem as if anything was wrong then the backlight stopped working, I restored it 4 or 5 times and it finally kicked back on. Try that.
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Matthias Forger

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Ive got an iPhone 3GS with à broken lcd, so i changes it, but an collegue of my inserted à 3G lcd.. The iPhone shortcircuit i think and when i placed THE 3GS lcd back in, THE backlight was gone.
Ive tried replacing it with another and no backlight.
Of there woud be any corrosion on THE motherboard or damage, where would it be located?
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Dylan Whisnant

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My iPhone got wet by a water bottles condensation. The phone works FINE, except the backlight. Also, when I call people, the speaker is really quiet. Im going to leave it in rice. Will update.