ibook G4 Video problem

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iDweeb's picture
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Joined: Dec 19 2003
Posts: 103

HI! I've got a 12 inch iBook G4 with a weird issue: When I open the screen farther than 90 degrees (say about 135 degrees or so, the screen flickers out and gets a STRONG Magenta / Purple tint. When it flickers the image dithers and gets grainy and Magenta.

Has anyone else here had a similar problem? I'm thinking it could be a video ribbon / cable problem but I'm not 100% sure. Web searching has been a real crapshoot.

Specs are:
1.07 GHz G4, 768 MB Ram, 60 GB HD. Photo is attatched. For some reason my camera couldn't capture the Magenta-ness so I mocked up the what the screen looks like, using PhotoShop.

Thanks,

-Tim

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TheUltimateMacUser's picture
Joined: Jan 28 2004
Posts: 615
Your...

Your LVDS cable is damaged, i'd say. If so, it'll probably get worse over time if you keep flexing it.

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Joined: Jan 31 2010
Posts: 2
I would say it's definitely t

I would say it's definitely the video display data cable. It's a pretty big job, but by no means impossible. See: This Page

iDweeb's picture
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Joined: Dec 19 2003
Posts: 103
ibook video problem

Thanks for your insight. I was afraid maybe something was wrong or loose with the video processor! -Tim

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TheUltimateMacUser's picture
Joined: Jan 28 2004
Posts: 615
No...

The fact that it seems to be triggered by tilting the screen back makes it quite likely to be a damaged LVDS cable. If it were your GPU, the issue would be constant, or at least, would be completely unrelated to screen position.

Cheers!
-Ult

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