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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone, iPad, iPod Hardware Repair

iPhone, iPad, iPod Hardware Repair Hardware Repair discussions for iPhone, iPod , iPad & Apple Products, help, guides.

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Old 11-15-2012, 06:19   #1 (permalink)
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iPad 3 no LCD


Replaced a digitizer 7 weeks ago, today screen is blank. Hard reset, etc does nothing. Opened iPad, removed LCD and installed known working one. No change. However, the known working one doesn't work now either in another ipad.

I have tried disconnecting the battery for 30mins.

There is no physical damage that I can see.

Any ideas guys?
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Old 11-15-2012, 08:06   #2 (permalink)
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http://forum.gsmhosting.com/vbb/f631...tness-1564286/
have a look at this post. does it have a image and has no brightness?
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Old 11-15-2012, 23:00   #3 (permalink)
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No, it simply has nothing.
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Old 11-26-2012, 06:55   #4 (permalink)
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This problem still exists.

I have tried numerous screen, checked the voltages here:



It makes a beep every 2 seconds if charging and the backlight will come on at random.
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Old 12-05-2012, 00:46   #5 (permalink)
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I still have this issue and have no idea where to go next! Any suggestions are welcomed...
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Old 12-05-2012, 08:49   #6 (permalink)
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on the back side of motherboard there is two backlight filters near the battery connector, and they might be damaged, check them with microscope
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Old 12-06-2012, 03:10   #7 (permalink)
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Ok, progress, have found the culprit (in both iPads). It seem i have a burnt out component on the underside of the board. I'm unsure what it was originally but look to be a capacitor?

The weird thing is, The cap obviously blew (reason unknown), but when I transferred the screen from that iPad into a working one, it also blew the same component in the new iPad.







I have removed the of*****ng component, the device doesn't fire now. Obviously it's needed. Anybody know what the part was?
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Old 12-06-2012, 05:22   #8 (permalink)
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wow thats pretty bad burn.
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Old 12-06-2012, 07:35   #9 (permalink)
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I've only seen these components damaged

Last edited by Levani_Pmic; 01-04-2013 at 13:41.
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Old 12-06-2012, 08:02   #10 (permalink)
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If it was a capacitor, can I simply take one from a dead iphone board?
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Old 12-06-2012, 08:23   #11 (permalink)
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Quote:
Originally Posted by simonchunk View Post
If it was a capacitor, can I simply take one from a dead iphone board?
i checked it and this part is not a capacitor, it just needs shorting
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Old 12-06-2012, 08:34   #12 (permalink)
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Legend! Do you know what it was?
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Old 12-06-2012, 23:18   #13 (permalink)
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FIXED!!!
FIXED!!!
FIXED!!!
FIXED!!!
FIXED!!!

Thankyou so much for you help Mkleli55, I am forever in your debt.
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Old 12-07-2012, 19:11   #14 (permalink)
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I have the same problem ... IPad 3 without a screen, I changed the lcd and it did not help ... Can I do like the lighting fuse Bridge Photo uploaded?
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Old 12-08-2012, 10:56   #15 (permalink)
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this same ipad2 PP3V3_LCD it is L2201 can jumper or use L(fuse) another phone. After add the screen circuit cheque it through the circuit to GROUD or not if shorting change new LCD.
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