[G4] monitor problem
Doug McNutt
douglist at macnauchtan.com
Sun Mar 4 11:23:53 PST 2007
At 13:05 -0600 3/4/07, Margaret Krakowiak wrote:
>All of a sudden my monitor resolution changed from 1024x768
>to 640x480. I can't change it back, any other options are greyed out.
A broken wire or a loose connection in the video cable can do that.
There are three wires which are grounded or connected with diodes that identify Macintosh monitors. They are checked at power-on time. If they were loose when last powered up the monitor type will appear frozen.
Reseat the cable, make sure the screws are tight then shut down all the way to power-off. Restart.
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