Jules "The iMac (20-inch Late 2006) has three built-in diagnostic LED's and a front power-on/sleep LED on the main logic board that can help you to troubleshoot the computer.
To Access the Diagnostic LED's:
1. Follow the take apart instructions to remove the RAM access door, front bezel, and lower EMI shield.
2. Locate the SO-DIMM slot and LVDS video connector. The three diagnostic LED's 1, 2, and 3 are located below the battery and to the right of the memory slot. Note that the LED's are marked 1, 2, 3 as show below. An additional front bezel LED is located in an opening at the center of the right speaker.
LED #1
• Indicates that the trickle voltage from the power supply has been detected by the main logic board. This LED will remain ON whenever the iMac is connected to a working AC power source. The LED will remain on even when the computer has been shut down or put to sleep.
The LED will turn off only if the AC power source is disconnected or the power supply is faulty.
LED #2
• Indicates that the main logic board has detected proper power from the power supply when the computer is turned on. This LED will be ON when the computer is turned on and the power supply is working correctly.
LED #3
• Indicates that the computer and the LCD display are communicating. This LED will be ON when the computer is turned on and video signal is being generated.
I am not a Mac person, but I hope this helps, good luck.
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Post the last 3 numbers of your serial number. That will help to properly identify your computer.
da oldturkey03
The last 3 of the serial number are VUV.
Thanks
da Jules
Jules, does this sound about right :"
iMac "Core 2 Duo" 2.16 20-Inch 2.16 GHz Core 2 Duo (T7400)
Intro Date: September 6, 2006 Disc Date: August 7, 2007
Order No: MA589LL Model No: A1207 (EMC 2118)
Subfamily: Late 2006 Model ID: iMac5,1
Std RAM: 1 GB Std VRAM: 128 MB*
Std Storage: 250 GB (7200 RPM) Std Optical: 8X DL "SuperDrive"
da oldturkey03
I have the same problem, and my last 3 are also VUV.
da John Wolsky