Saltar al contenido principal

Guías de reparación para el MacBook Air, la línea de Apple de laptops para consumidores.

Preguntas 4794 Ver todo

Why is my keyboard screen apple logo dark

my macbook air mid 2010 won't light up the only light that goes on and off is the caps lock key. i can plug in to another screen using the dvi out port but thats it nothing on my macbook. i have tried all the resets pram safe boot etc nothing works. please help as I'm on a budget and don't want to put it in the bin. thank you.

Contestado! Ver respuesta Yo también tengo este problema

Es esta una buena pregunta?

Puntuación 1
1 comentario

how does one remove and replace the backlight fuse on a 2010 MacBook air?

- de

Agregar un comentario

2 Respuestas

Solución Elegida

So just to clarify, the external display DOES work and display the proper video?

If so then your GPU is likely ok. Assuming this these are the steps I would take:

__________________________________________________________________

Shine a light into the display while the Mac is powered on. If you can see images/video then your backlight is out.

Try adjusting the display brightness using the F1 & F2 keys.

If adjusting the backlight brightness has no effect then try a PRAM/NVRAM reset, holding Command+Option+P+R while powering on your Mac, releasing all of the keys after you hear it chime three times.

If the issue persists then I would attempt an SMC reset, make sure your Mac is connected to it's power adapter, hold Shift+Command+Option+Power button for about 5 seconds then release all of them together, wait a second then attempt to power on normally.

If the issue still persists then you are dealing with a hardware issue. Possibilities include a blown backlight fuse, failed inverter or failed display.

__________________________________________________________________

If the above test did not show any video on the internal display then I would take the following steps.

If adjusting the backlight brightness has no effect then try a PRAM/NVRAM reset, holding Command+Option+P+R while powering on your Mac, releasing all of the keys after you hear it chime three times.

If the issue persists then I would attempt an SMC reset, make sure your Mac is connected to it's power adapter, hold Shift+Command+Option+Power button for about 5 seconds then release all of them together, wait a second then attempt to power on normally.

If there is still no video then I would check things at a hardware level. Removing the bottom case I would disconnect the battery then disconnect and reconnect the LVDS (video) connection at the logic board (Step 20).

If the issue still persists then this is likely a hardware failure. Likely failed components would be the display assembly and/or logic board, although I would lean more towards the display.

__________________________________________________________________

Hope that helps!

Fue útil esta respuesta?

Puntuación 1
Agregar un comentario

You may find that if the computer does not start then the cap light may be signalling what is wrong. Sometimes on computers (Not sure about Apple) if the computer will not start the caps light sometimes flashes in a unique pattern to indicate the issue. Look to see if it flashes in any sort or pattern.

Fue útil esta respuesta?

Puntuación 0

1 comentario:

This behavior exists with Macs, as part of the POST test at startup, but not with the caps lock light. Macs with the power light (the light that fades in and out when the Mac is asleep) will flash this light in patterns when POST failures have occurred, almost always accompanied by a series of flat audio tones. I don't think this behavior exists with newer MacBook Airs, as they lack the power light, though they should still have the audible error tones. A curious person could remove the RAM from a Mac and power it on, this will cause POST to fail and emit the audible tones and/or power light flash if it's present.

- de

Agregar un comentario

Añadir tu respuesta

paul estará eternamente agradecido.
Ver Estadísticas:

Ultimas 24 horas: 0

Ultimos 7 días: 1

Ultimos 30 días: 5

Todo El Tiempo: 1,701