Intel Mac :: Screen Stays Black On Startup?

Apr 1, 2012

This 5 year old iMac makes the seek optical drive sound when switched on, but does not chime, but I can hear the hard drive going afterwards.

The screen just stays black, not a flicker.

The problem is that it is located in a small pretty isolated town in NE Brazil, I will be going back out there later in the summer so if anyone has any helpful ideas it would be most welcome. Fortunately we have a full CCC clone of the hard drive and a working MBP so we haven't lost anything, but it would be very good to have it working again.

Does it have a socket for an external monitor, I really cannot remember, as I have not seen it since November, I know the old round iMacs had one.

The nearest Mac store is probably in Rio or Sao Paulo which are a good day travelling by  car and plane so there is no chance of getting it there.

Info:
iMac, Mac OS X (10.4.11)

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May 5, 2012

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I have tried: Unplugging all peripherals, with the same result.
SMC reset: Unplug power cord and hold power button for 5 sec. PRAM reset...

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Jun 19, 2012

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Sep 28, 2010

I have a Mac Pro (Early 2008) running on 10.5.8 OSX with apple 20" display and 16G RAM.

Initially started with my MACPRO not waking up from sleep and has to force the shut down with power button. Finally realised it was due to my Epson scanner connected via USB...

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it becomes an on and off issues... and continuously I solved it with SMC reset.... sometimes needed 2 or 3 resets to get it to work,and finally for the past few days... SMC reset can't solve it either... no display on startup, and same thing I can control the volume and disk eject/close. Have tried my monitor on other mac and it worked fine.

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I tried to push the power button for like 10 seconds straight when I turned on to see if that would fix the problem but no. I can hear the hard drive starting up when I push the power button but black screen.

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Info:
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Apr 15, 2012

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Info:
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Mar 12, 2012

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Currently, I'm trying to turn it on, no 3 beep signal is sounding off but the Mac either keeps freezing and showing a highly pixelated screen or a black screen surfaces. There is some sound coming off from the laptop as well.†Each time I switch on the system, it just shows a black screen with no display.

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Jul 2, 2012

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