Model A1224 / Mid 2007 and Early 2008 / 2, 2.4, or 2.66 GHz Core 2 Duo processor

Preguntas 596 Ver todo

White screen - Pink vertical lines - White screen

Ref: iMac, 20-inch, 2.66GHz Intel Core 2 Duo - experienced white screen. I followed corrective procedures given on multiple web pages. At first, successful but then appeared thin vertical pink and green lines. Continued with procedures, and succeeded at returning to white screen. Does this mean the hard drive should be replaced?

Update (12/03/2017)

Update: I ordered a logic board from ifixit and followed the guide to replace the logic board -

iMac Intel 20" EMC 2133 and 2210 Logic Board Replacement

I believe I completed all steps correctly, except at Step 10, I did not mark the inverter cables because the instructions indicated them to be interchangeable, however the comments indicated otherwise.

I reassembled all and pressed the power button, but got only Black Screen and Beeping at intervals of about 2 - 3 seconds. I went back and tried all combinations of connecting the inverter cables, and still got Black Screen & Beep.

Please advise. Please...

Contesta esta pregunta Yo también tengo este problema

Es esta una buena pregunta?

Calificación 0

Comentarios:

What were your procedures??

A white screen with pink or other colored lines is a video issue not a hard drive issue. I would focus on reviewing the display logic.

As for testing to isolate out whats bad: I would connect an external monitor to see if the image is clear on it Vs the internal. If its not, then the GPU is bad. If its good then you either have a LVDS cable issue or the internal display is having issues.

por

One for example, from: https://macreports.com/mac/

To clarify - the problem is currently white screen, no vertical lines. Previously I had white screen and reinstalled the OS, and solved it. Then more recently, the vertical lines developed, over normal background. So trying the steps again, it produced only white screen. So now it's just white screen only. Thanks for the tips. I don't know how to connect an external monitor, or even where to find one but I'll try to figure it out.

por

On the back side of your system you have a mini-DVI connector so you can plug in a mini-DVI to HDMI adapter and a standard HDMI cable to plug in your TV or external display.

por

Ok, I bought a mini-DVI to HDMI adaptor, connected it to my TV, and white screen appears on the TV. So that means the hard drive is bad, correct? And if I want to keep using the iMac, I should replace it. Thanks for the input.

por

Agregar un comentario

¡Envío gratuito para todos los pedidos de más de USD100 o que contengan un Pro Tech Toolkit!

Visita Nuestra Tienda

1 Respuesta

Respuesta Más Útil

Lets review the boot process: About the screens you see when your Mac starts up. A Bad HD would get you blinking question mark on a folder icon. So it's not a bad drive. You can also prove this as holding down the keyboard T should show a FireWire Icon floating across the screen as you are telling the system to go into Target Disk Mode: Use target disk mode to share files between two Mac computers If you have a second Mac that can connect to your iMac you should have access to your systems drive.

But I don't think you'll get that far. The fact the external monitor shows the same screen aims us to a logic board failure.

Fue útil esta respuesta?

Calificación 1

Comentarios:

Is that fairly certain? Replacement of the logic board is the recommended solution?

por

Did you see the FireWire icon on the screen?

por

No, only white screen.

por

Sorry guy you've proved its a bad logic board ;-{

por

Ok thanks. On to phase 2...

por

Mostrar 5 comentarios más

Agregar un comentario

Añadir tu respuesta

mchlgrblsk estará eternamente agradecido.
Ver Estadísticas:

Ultimas 24 Horas: 2

Últimos 7 Días: 9

Últimos 30 Días: 34

Todo El Tiempo: 1,247