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** Check the bezel below the display as well. Damage to this area could sever or puncture the fragile cables beneath it. | |
* Check internal cables for signs of tears or other damage. Pay special attention to the cables leading from the TCON board to the display. They tend to collect debris and could have punctures or tears causing a variety of display related issues. | |
- | * If you find damage, or software fixes have not made a difference, replacing the display is the most likely solution. Use the [[Topic:Mac Laptop|appropriate Guide|new_window=true]] for your model. iFixit may even carry the [ |
+ | * If you find damage, or software fixes have not made a difference, replacing the display is the most likely solution. Use the [[Topic:Mac Laptop|appropriate Guide|new_window=true]] for your model. iFixit may even carry the [parts|Mac Laptop|screen|itemtype=screens]! |
== Faulty Flex Cables == | |
* These cables are a common fault due to repeat tension from opening and closing the screen. They are also prone to trapping debris that falls in the gap in the hinge area resulting in small cable punctures. This may also be referred to as “Dust Gate.” | |
* Inspect the cables for tears or dimples. Even minor damage could cause problems. Tears are common where they may rub against the edge of the TCON board. | |
- | * Even though [product|IF123-139|the cables|new_window=true] are the faulty part, the most common fix is replacing the entire display assembly. |
+ | * Even though [product|IF123-139|the cables|new_window=true] are the faulty part, the most common fix is replacing the entire [parts|Mac Laptop|display assembly|itemtype=screens]. |
* The cables themselves are extremely difficult to replace. One end is soldered to the TCON board. The other end leads under the back of the display panel, which is not intended to be removed independently. | |
* Some folks repair the cables with microsoldering, but this is not a repair for the faint of heart, or the inexperienced. They also tend to face the same failure since soldered on jumper wires don’t flex the same way as the cables they seek to repair. | |
== Logic Board == | |
- | The logic board is the hub for the vast majority of a MacBook’s functionality. Any number of the small components on the board may have failed or become damaged. Logic board fault is a safe assumption of cause if nothing else on this page has worked. |
+ | The [parts|Mac Laptop|logic board|itemtype=motherboards] is the hub for the vast majority of a MacBook’s functionality. Any number of the small components on the board may have failed or become damaged. Logic board fault is a safe assumption of cause if nothing else on this page has worked. |
* Check for obvious signs of a board issue - burned or cracked components, liquid residue, corrosion or bend. If there are signs of liquid, there’s still hope your Mac can be resurrected. |
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