Just modified the Backlight/Pressure wall by cutting part of it to allow the cpu fan to move airflow to the Backlight board. Main reason older iMacs ran alot hotter at the upper right corner becaue the backlight board runs passively with hot air slowly exiting the long vent with the pressure walls preventing the backlight board from recieving airflow from the cpu fan. Might post temperatures later but the back/top of the iMac under regular use is alot cooler not instead of burning hot. Only issue or minor one is that the top pressure wall kinda hands losely from a single screw mount from the power supply.
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iMac 27 2009-2011 cooling mod
- Thread starter Winston-
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