주요 콘텐츠로 건너뛰기

7.9 inch display / Model A1432 / Available in black or white / Announced October 23rd, 2012 / 16, 32, or 64 GB capacity

232 질문 전체 보기

What causes backlight on ipad mini

I took apart a new iPad mini without turning it on. I disconnected the battery cable, lcd and digitizer. When I reconnected everything, battery last, I had a backlight problem. What caused the backlight fuse to blow?

답변되었습니다! View the answer 저도 같은 문제를 겪고 있습니다

좋은 질문 입니까?

점수 7

댓글:

Have same problem :(

의 답변

Ok so, I have a Backlight Repair kit. Comes with IC, Filter and Coil. However, where the Filter would be, is blown to a point where the copper that the Filter would be soldered onto, is missing. Wouldn't be such an issue and could be delt with soldering a wire to where ever the Copper feed runs to on the circuit board. However, we don't know where it runs to and we need a schematic of the circuitry to find out. Does anyone have a link or any information that could help us with this?

의 답변

I gave advice on this under the question: Screen stays black after digitizer replacement

의 답변

I have a simulair problom my ipad mini is about 3 months old and the backlight is making my ipad glitch and there different coloured line verticly

K.feldmann

의 답변

의견 추가하세요

6개의 답변

선택된 해법

With the ipad mini you have to unplug and replug the battery in after every time you remove the lcd. The backlight will not work without doing this. This happened to me on the first one I worked on.

해당 답변은 도움이 되었습니까?

점수 4

댓글:

Oddly enough, this option worked for me too. We disconnected the battery, then the LCD. After the screen replacement, we connected the digitizer, then the LCD and finally the battery. To our surprise the Backlight wasn't working (we could barely see the Apple logo). So we disconnected the Battery again, then the LCD. What worked for us, which made no sens, but worked.. is that we connected the battery THEN connected the LCD and the backlight was up again.

Thank you for the hint!

Alexis

의 답변

의견 추가하세요

from your question it's not clear what order you disconnected the components---but the battery must be disconnected first.

My understanding is that if you pull the LCD connector before disconnecting the battery, that creates a sudden drop in voltage which will correspond to a sudden increase in amperage which blows the filter. I know that you mentioned that you didn't have the iPad powered on, but in the work of removing the screen, you may have pressed the power button at some point?

jessa

해당 답변은 도움이 되었습니까?

점수 2
의견 추가하세요

make sure everything is plugged in but the battery make sure it has no power the wait a sec then plug in the battery and power it on. the mini has less filters for the back light so a hard reset wont work. if that dont work you burned a filter

해당 답변은 도움이 되었습니까?

점수 1

댓글:

And if we burned a filter... then what?

의 답변

의견 추가하세요

I have a board with the same issue, i dont know what causes the fuse to blow but maybe this will help get your backlight working correctly.

Th screen stays black after a digitizer replacement.

해당 답변은 도움이 되었습니까?

점수 0
의견 추가하세요

Hard reset does not work, you must disconnect the battery for several seconds. This is the correct answer

해당 답변은 도움이 되었습니까?

점수 0
의견 추가하세요

So Ive tried all of the above suggestions and I’m still seeing a very very dark screen where I can hardly see the Apple logo. What parts do I need to replace? Or is this even worth it?

해당 답변은 도움이 되었습니까?

점수 0

댓글:

I have same as you all but hard reset or batt unplug, plug in I get bright screen on boot but a short time later pressing power button or home,backlight dies and I can repeat the reset and get the same thing again

의 답변

의견 추가하세요

귀하의 답변을 추가하십시오

mt5550 가/이 대단히 고마워 할 것입니다.
조회 통계:

지난 24시간: 1

지난 7일: 6

지난 30일: 31

전체 시간: 20,555