Dark spots on left side of LCD from top to bottom?

Dark spots on left side of LCD from top to bottom?

Dark spots on left side of LCD from top to bottom evenly spaced? They are not lines, its not a broken lcd, and its not a faulty lcd, a new one has the same spots. My only guess is maybe a backlight fuse? but the other 99% of the lcd is fine. It looks like only part of the back light is not lighting up. They are spaced about 1cm apart and go no deeper than 1cm into the lcd from the frame. And all the dark spots are identicle. Thanks! second time ive seen this, and anyone that can repair it?

Asked by: Guest | Views: 308

Total answers/comments: 5

Comments display order:

Guest [Entry]

"I have solved this problem, by replace PPLED DIODE , it is zener diode regulator 3.3v for odd led B, and even led A.

on ipad air diode D8228 chanel A, and diode D8258 chanel B.

locate it at beside U8100.

must be have schematic diagram will it.

if one diode dead, lcd shows look like picture above.

if both lcd show black but still have icons is very dime.

good lucky. hahah."

Guest [Entry]

https://youtu.be/VeJ_iViObPc

Guest [Entry]

TurboHommy, from your description it sounds like you are saying the shadow from between the LED's from the backlight. This can happen when the backlights rotate during manufacture of the panel. Post an image of what your panel looks like with your question. Use this guide for that. I envision something like this

Guest [Entry]

I had this problem today with odd or even backlight LEDs not illuminating on the left of the screen, giving a dotted pattern. I used a multimeter on diode test mode to test the two backlight diodes, found the dead one, also found a dead filter near the screen connector too. Replaced the filter with a iPhone 6 backlights filter and the diode with the backlight diode off an old iPad mini board and it's all working fine now.

Guest [Entry]

Test a new LCD if that does not fix it, the backlight filter probably went bad. Most likely cause of that is unhooking the LCD while the battery is still plugged in and the device is powered on.