An update for information.
I borrowed a friend's LCD panel and it didn't fix the problem. It still exhibits the exact same symptoms.
I fear that it is a lost cause.
I have now bought a 27" iMac to allow me to put the hassle behind me.
Ritch
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| iMac 24 black screen http://www.powerbookmedic.com/forum/viewtopic.php?f=27&t=3174 |
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| Author: | ritch [ Wed Mar 07, 2012 5:28 pm ] |
| Post subject: | iMac 24 black screen |
My iMac 24" (early 2008) has developed a problem. Black screen!! It powers up and makes all the usual start up sounds. As it was active when this occurred, it makes the sound when email is received etc. If I look very, very, very close to the screen I can just make out the open windows etc. I have attached an external monitor and it displays the screen saver. All 4 small LEDs light up and turn off appropriately as it goes in to sleep mode etc. My question: Is it a safe bet that it is the LCD panel that needs to be replaced. TIA Ritch |
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| Author: | justin-pbmedic [ Wed Mar 07, 2012 5:35 pm ] |
| Post subject: | Re: iMac 24 black screen |
That is typically the inverter which is what controls power to the backlight. The LCD can also be the culprit. |
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| Author: | ritch [ Thu Mar 08, 2012 4:25 am ] |
| Post subject: | Re: iMac 24 black screen |
Thanks Justin. A further update. It flickered and came back to life. I took the opportunity to erase the hard drive and install the original OS etc. During that exercise it behaved. Powering up and down as it went through the installation process. I shut down and went to bed. This morning it is black screen again. Ho hum. I had a look on your site for suitable inverter board. No Joy. It would appear that this model has the board built into the LCD Panel. I'll need to have a look at my penny jar. iMac 24 (early 2008) Thanks and regards, Ritch |
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| Author: | ritch [ Mon Mar 12, 2012 3:18 pm ] |
| Post subject: | Re: iMac 24 black screen |
An update for information. I borrowed a friend's LCD panel and it didn't fix the problem. It still exhibits the exact same symptoms. I fear that it is a lost cause. I have now bought a 27" iMac to allow me to put the hassle behind me. Ritch |
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