no display on screen
i turn on the computer the white led light is lit i hear the fans running but no chime or display on computer. i already replaced ram
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Take the frame off and observe the diagnostic LEDs located to the right of the RAM slots. The LEDs may be covered by a piece of black tape so remove it. If you just get #1 to light, replace the power supply. If other lights are on, let us know.
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Here's how to get the frame off: iMac G5 20" Model A1145 Front Bezel Replacement
