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Is the heatsink supposed to sound like it has liquid in it when you shake it? On a recent tear down of my imac to put new paste on I shook the heatsink and couldn’t hear any sloshing etc. I’ve read that the heatsink has liquid in it that can sometimes leak out and wonder if a new unit would have detectable liquid in it by sound.
Hope that makes sense.
Much thx
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I’ve never heard any sloshing ;-}
There is a few ways to tell if the heat sink is failing even before you open the system!
Monitoring the thermal sensors using a good monitoring app like TG Pro I monitor the core temps and the Heatpipe outgoing air or Heatsink Proximity looking at the delta difference between them no more than 20℃. By far this is the easiest and works across all systems.
A good inferred viewer will show you the heat map between the heat sink to the fin area. That works on a MacBook Pro’s but you can’t effectively see the iMac’s as the CPU/GPU’s are on the back side.
If you have the heat sink out I use a scale to measure the weight of the heatsink comparing to a second (exact same model and both clean)
Looking at the logic board and the heat tube you might see a white power or staining if you suspect the system is over heating. Inspecting the heat pipe you might see a pinhole.
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