Repair guides for the MacBook Air, Apple's current line of consumer laptops.

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If my WLED driver chip has blown, what do I need to replace?

I recently had some minor water damage to my MacBook Air and the display died. It appears to be the WLED driver as shining a light through the back of the screen reveals the display (and the computer itself still seems to be working).

When I took it to my local Apple repair shop they said if it was the WLED driver chip they would have to replace both the logic board and the display, for a grand total of 900 USD.

That seemed like a lot of replacing for one broken component so I thought I'd check whether others agree with their opinion or if there might be another way to fix it.

MacBook.s currently in the shop waiting for them to finish their diagnosis so I don't have serial numbers, etc. It's a 2015 model though.

Advice welcome!

Cheers, Tom

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It all depends on the damaged area, it could be only the backlight chip, other components around it or damaged traces. Usually a third party shop will charge you around 250 to 350 $/euros/pounds for this repair.

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It could also be the fuse link blew! But it's a good idea to know why it blew so you fix the underlying problem.

Did you spill something or sit your system down on a wet surface again? ITs possible the clean up from the first time didn't clean what was needed.

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Thanks! In the end they just had to replace logic board for 474 USD (might be 250 USD in US but I'm in Myanmar (Burma) so parts are a little harder to come by here). Shame not to be able to just replace the WLED chip but I guess these integrated circuit boards are just too fiddly for that

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Out of curiosity did you get the old logic board back? You can sell this for spares or even take it on as a project (backlight issues are the easiest to fix usually, so I reckon you could get at least £180 for the board minimum)

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Thomas Donnelly will be eternally grateful.
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