ipad mini backlight Not Working - Page 2 - GSM-Forum

cal_guy · 05-30-2013, 04:25

Quote:

Originally Posted by AllCrackedUp

I don't understand how a backlight coil or IC can be damaged just by unplugging it from the motherboard?

Backlight needs high voltage and sudden voltage drop increase amperes. As a result one or more components fail.

marcoscos · 06-21-2013, 08:12

I try the solution from mimisha. It works for me. Thanksssss!!!

Mobile Fix Simple · 06-21-2013, 08:26

Quote:

Originally Posted by AllCrackedUp

I don't understand how a backlight coil or IC can be damaged just by unplugging it from the motherboard?

As the backlight ways are on the ends of the socket, if it is easy to short circuit when unplug or plug the cable.

rad5ive · 06-28-2013, 13:21

i have the same problem, tow ipads mini no Backlight .
looking exactly to your Board i can see the burned black coil as mine (see picture).
anyway on my board i can see definitly burned coil with microscope (see second picture)
but still dont know which coil this one , and where i can finde the same one ?
for any help would be appreciate.

kostelectronics · 06-28-2013, 13:47

I think you killed one of the 2 FL's

That happens often when somebody disconnect the display. i had it many many times, only this, that's it!!

rad5ive · 07-03-2013, 03:19

can you please show me where are the 2 FL's in Ipad mini ?
thank you in advance

kostelectronics · 07-03-2013, 08:37

Sorry! this iPad have more FL's that can be damaged. I edited the photo above with 2 red rectangles. Check those parts for contiunity. In my case, the single FL under the metal shield was bad (Solution already posted here from somebody).

PS: FL stands for Fuse-Coil, those parts will be burned if you don't take care when you connect plugs or some components are damaged, it's like a fuse to prevent from more damage!

updown · 07-04-2013, 10:41

these FL's replace or just make jumper ?

kostelectronics · 07-04-2013, 10:49

you can jump it, but take care! at the best you connect the battery after you connected all other things first!

eric9900 · 07-13-2013, 16:16

hi sarjoon good day..

i have the same problem..have you already find the solution? pls help me ...

eric9900 · 07-13-2013, 21:00

tnx mimisha and kostelectronics it works..

ownage · 07-13-2013, 22:09

how u did? u take out the red fuse then jump it?
or jump a cable as the green line of mimisha picture?

eric9900 · 07-14-2013, 13:19

i jst make jump in the red fuse no need to remove it ....i did not make a jump in the green line in my case....

bmwrew · 07-15-2013, 19:43

I have this issue with none working backlight and I want to try the jump fix. I'm very confused where to jump though from what you guys are saying. Can someone pelase throughouly explain where exactly to jump to?

The picture with the green line is very vague on where exactly to connect to near the LCD connector. Also does there need to be 2 jumpers on each side of that fuse or should i jump directly from the power point to the LCD area?

Much appreciated if i can get a clear response on this. Under pressure to get this resolved.

Also, for those of you who responded that high voltage and sudden drop can cause this, how in the future can I disconnect things and AVOID causing this again? Should I not disconnect battery? should I wait after disconnecting battery? should I short battery terminals after disconnecting to discharge capacitors?

Help is very much appreciated.

deespmd · 08-07-2013, 16:56

I have two iPad mini with this issue. Can you please post how to do this repair?

06-21-2013, 08:12	#17 (permalink)
marcoscos Junior Member Join Date: Jun 2013 Posts: 5 Member: 1963703 Status: Offline Thanks Meter: 0	I try the solution from mimisha. It works for me. Thanksssss!!!

06-28-2013, 13:21	#19 (permalink)
rad5ive Junior Member Join Date: May 2011 Posts: 10 Member: 1584960 Status: Offline Thanks Meter: 6	i have the same problem, tow ipads mini no Backlight . looking exactly to your Board i can see the burned black coil as mine (see picture). anyway on my board i can see definitly burned coil with microscope (see second picture) but still dont know which coil this one , and where i can finde the same one ? for any help would be appreciate.

06-28-2013, 13:47	#20 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	I think you killed one of the 2 FL's That happens often when somebody disconnect the display. i had it many many times, only this, that's it!!

07-03-2013, 03:19	#21 (permalink)
rad5ive Junior Member Join Date: May 2011 Posts: 10 Member: 1584960 Status: Offline Thanks Meter: 6	can you please show me where are the 2 FL's in Ipad mini ? thank you in advance

07-03-2013, 08:37	#22 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	Sorry! this iPad have more FL's that can be damaged. I edited the photo above with 2 red rectangles. Check those parts for contiunity. In my case, the single FL under the metal shield was bad (Solution already posted here from somebody). PS: FL stands for Fuse-Coil, those parts will be burned if you don't take care when you connect plugs or some components are damaged, it's like a fuse to prevent from more damage!

07-04-2013, 10:41	#23 (permalink)
updown Freak Poster Join Date: Sep 2005 Location: U.A.E Age: 43 Posts: 312 Member: 182134 Status: Offline Thanks Meter: 16	these FL's replace or just make jumper ?

07-04-2013, 10:49	#24 (permalink)
kostelectronics No Life Poster Join Date: Apr 2009 Location: Wikon, Switzerland Posts: 941 Member: 1012778 Status: Offline Thanks Meter: 245	you can jump it, but take care! at the best you connect the battery after you connected all other things first!

07-13-2013, 16:16	#25 (permalink)
eric9900 Junior Member Join Date: Jul 2013 Posts: 7 Member: 1978305 Status: Offline Sonork: 100.1641386 Thanks Meter: 0	hi sarjoon good day.. i have the same problem..have you already find the solution? pls help me ...

07-13-2013, 21:00	#26 (permalink)
eric9900 Junior Member Join Date: Jul 2013 Posts: 7 Member: 1978305 Status: Offline Sonork: 100.1641386 Thanks Meter: 0	tnx mimisha and kostelectronics it works..

07-13-2013, 22:09	#27 (permalink)
ownage Registered User Join Date: May 2006 Posts: 500 Member: 274461 Status: Offline Thanks Meter: 17	how u did? u take out the red fuse then jump it? or jump a cable as the green line of mimisha picture?

07-14-2013, 13:19	#28 (permalink)
eric9900 Junior Member Join Date: Jul 2013 Posts: 7 Member: 1978305 Status: Offline Sonork: 100.1641386 Thanks Meter: 0	i jst make jump in the red fuse no need to remove it ....i did not make a jump in the green line in my case....

07-15-2013, 19:43	#29 (permalink)
bmwrew Junior Member Join Date: Jul 2013 Posts: 1 Member: 1979601 Status: Offline Thanks Meter: 0	I have this issue with none working backlight and I want to try the jump fix. I'm very confused where to jump though from what you guys are saying. Can someone pelase throughouly explain where exactly to jump to? The picture with the green line is very vague on where exactly to connect to near the LCD connector. Also does there need to be 2 jumpers on each side of that fuse or should i jump directly from the power point to the LCD area? Much appreciated if i can get a clear response on this. Under pressure to get this resolved. Also, for those of you who responded that high voltage and sudden drop can cause this, how in the future can I disconnect things and AVOID causing this again? Should I not disconnect battery? should I wait after disconnecting battery? should I short battery terminals after disconnecting to discharge capacitors? Help is very much appreciated.

08-07-2013, 16:56	#30 (permalink)
deespmd Junior Member Join Date: Aug 2013 Posts: 1 Member: 1996381 Status: Offline Thanks Meter: 0	I have two iPad mini with this issue. Can you please post how to do this repair?