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iMac chrashed |
hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
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This evening while browsing Facebook on Chrome my iMac froze. No spinner and no mouse action.
Restart with the power button gave the start-up sound and you can hear the disk ratlle. That's it.
No sign of life on the screen. Pressing a key gives a sound but nothing happens.
It's an Intel iMac 17" dualcore 1.8ghz. Last month I replaced one of the 512mb cards for a 2gb.
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Miss UK
Joined: Jan 11, 2003
Posts: > 500
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Hans book a Session with a Apple rep
Or call them first 
An "Apple" a day keeps the Doctor at Bay! |
hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
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Correction, it's 2ghz
No luck with command, option, p, r.
No luck with command, option, o, f.
Sound comes up but nothing on the screen.
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jplacson
Joined: Apr 21, 2002
Posts: > 500
From: Philippines
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Hope you have an up-to-date Time Machine backup.
Try shutting it off, unplug, press the power button (yes, I know it's unplugged, this drains all residual capacitor power), leave it off for about 10 min, plug it in again, then turn it on.
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hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
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Everything is save in timemachine.
I bought a cable to use a second screen. Again, no luck. Maybe that has to be turned on in prefferences? For me, the extra monitor says; "'No Input Signal''. 
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hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
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Watched some YouTube videos about opening an iMac. That is not difficult but what to look for is the question. Screen? Video are?
**work in progress **
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AbuBasim
Joined: Nov 04, 2005
Posts: > 500
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Does it boot from the OS X installation DVD? If so, see if the hard drive is visible in Disk Utility.
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hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
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it does boot. I can hear that. Screen does not turn on, I attached a 2nd screen but that one says "no input signal"
I'll call apple tomorrow, maybe they can see what's the problem. Graphic processor?
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jplacson
Joined: Apr 21, 2002
Posts: > 500
From: Philippines
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Could be that your screen backlight is dead, or the screen itself.
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Oogamous
Joined: Aug 14, 2004
Posts: 400
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Had this exact same problem with my iMac about an year ago. Was covered under my AppleCare protection plan. They had to replace the mother board. Working fine since then.
Advice - use a surge protector or a UPS to connect your iMac to the mains.
-Oog.
Sony all the way |
Supa_Fly
Joined: Apr 16, 2002
Posts: > 500
From: Toronto, Ontario
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Remove all accessories and connections.
remove power completely!!
Wait a few minutes.
Try booting using PRAM reset,
Try booting with startup extensions disabled.
Try booting ONLY with an external screen attached (if you can).
If you have another OSX machine of same OS, try booting into Target Disk Mode.
|AppleTV2|iPhone 12Mini 256GB|iPad Pro 256GB| Previously ...  K750|Z500|Z520|K700|K790i|K850i, :Ericsson: T18z|T28World|T36m x3|T68m (Ericsson, not the rebranded T68i). |
hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
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I cleaned the inside. Lots of dust. Now I don't even get the startup sound. I think it's officially dead now
inside my iMac
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Supa_Fly
Joined: Apr 16, 2002
Posts: > 500
From: Toronto, Ontario
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On 2012-12-24 01:54:00, hihihans wrote:
I cleaned the inside. Lots of dust. Now I don't even get the startup sound. I think it's officially dead now
inside my iMac
Look for the PRAM battery ... locate the same type of battery, replace without power cord connected, then reconnect Power Cord - you should here a "click" from the power supply once connected.
Power device using PRAM reset, then re-power on iMac. I hope this really works for you.
|AppleTV2|iPhone 12Mini 256GB|iPad Pro 256GB| Previously ... K750|Z500|Z520|K700|K790i|K850i, :Ericsson: T18z|T28World|T36m x3|T68m (Ericsson, not the rebranded T68i). |
hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
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I noticed the battery. Forgot to measure if it was ok.
I replaced the ram with the original ram and my startup sound is back now and i can hear if i press a button on the keyboard. Already found out that graphics is integrated on the logic-board. Still nothing to see on the screen. Used boards go for £50. Tempting to try but a waste if I fail. Somehow I want to fix this myself. I did with my heating system, dishwasher and car.
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hihihans
Joined: Mar 15, 2009
Posts: > 500
From: Netherlands
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Changed cell-battery but no luck.
Next step is to replace the main board.
Not really available in the Netherlands.
EBay is a big risk, I think.
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Posted: 2012-11-30 00:14
K750|Z500|Z520|K700|K790i|K850i, :Ericsson: T18z|T28World|T36m x3|T68m (Ericsson, not the rebranded 
