2016+ (all the way to 2022 M1 models) 13" MBPs all suffers from dust-gate. The video and backlight flex cable rolls around the clamshell hinge cylinder and if something grainy like salt or breadcrumb gets in between. It will pinch the flex cable and damage the video and/or backlight signaling. |
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Flex cable is impossible to replace as its sandwiched in the glued together LCD/lid. Aftermarket screens are expensive and as usual much lower quality than Apple OEM. |
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Even basic task of cleaning the screen may drop debris into this hinge area. Best to the LCD on its back and keyboard+board pointing vertically to clean the screen wiping away from the clamshell hinge. |
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If in a high debris environment such as frequent eating while working on the laptop and dropping ample debris into the hinge. Its probably best to consider cleaning it every 2-3 years. It does require great deal of skill and care to do this and unlikely any professional shop sees a business charging customer $400 for 2+ hour required to do a thorough cleaning and carefully pick out the debris instead of pushing them in deeper into the rolled flex cable + clamshell hinge cylinder. |