08-21-2020, 09:08 PM
I had enabled this (fan on only when LEDs on) on my Mars but later had opportunity to monitor the LED operating temps¹. I found that with fan cycling the LED temperature would rise as expected when powered on but then, after both the LED and fan turned off, continue to rise and spike at some 20° to 25° C higher (at 140 to 145° C) than at "turnoff".
Reverting to the OEM "fan always on" setting I observed a much flattened curve peaking at 125° C.
In almost any discipline (except knife-making) unnecessary, repetitive and excessive thermal excursions of individual components is not good--sometimes OEM engineers do know what they are doing.
--------------------------------------
¹ - I got a new toy, a dual channel digital thermometer with type K thermocouple probes that lent themselves quite nice to being threaded through the Mars cooling vents.
Reverting to the OEM "fan always on" setting I observed a much flattened curve peaking at 125° C.
In almost any discipline (except knife-making) unnecessary, repetitive and excessive thermal excursions of individual components is not good--sometimes OEM engineers do know what they are doing.
--------------------------------------
¹ - I got a new toy, a dual channel digital thermometer with type K thermocouple probes that lent themselves quite nice to being threaded through the Mars cooling vents.
![[Image: 816-20120803-wide800.jpg]](http://www.paladinmicro.com/images/ForumPosts/816-20120803-wide800.jpg)