Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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chime, just white screen and loud fans

Hi

So I got this macbook from a freind, it was working fine until one day, there was the chime but just loud fans no apple logo or anything else, a PRAM reset is not possible I ve reset the smc a couple of times and tried all different combinations of RAM etc, I can t seem to find a description of this problem anywhere

thanks

Damien

Update

hi

thanks for your answer, I tried connecting a display and nothing happened, still the same thing, I ve considered it might be RAM slot death or a bad smc chip, and the unit doesn t have a hard drive in it but it never gets the folder with a question mark it just has a white screen and, also the caps lock light doesn t turn when its on, yet it clearly lets me reset the smc, so it is a very strange problem

Update

I figured out what it was

it turns out the wifi/isight cable was preventing startup for some reason with it disconnected it starts up just fine

Ответ на этот вопрос У меня та же проблема

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by disconnecting wifi.......it is working now.....Thnx damien

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And now you don't have WIFI anymore?

I have the same issue. I'm very curious whether you will able to fully repair the Mac

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1 Ответ

Of course you've tried a Safe boot (shift boot), boot from command-R or diagnostic optical disk (depends on the OS you're running which to choose) booting from some other volume (install disk or a target booted Mac)

Connect to an external monitor. If you see a the same thing you have an on board video problem - many of these trace back to a bad/corrupt boot volume (OS) . A backup/wipe/reinstall of OS often solves those issues.

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damien будет вечно благодарен.
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