You’ll need to find someone with Mac repair skills to fix your system. As these systems can be a bit tricky.
-
First MacsFanControl is not very good as it doesn’t get you enough useful information or offer the better way to manage your systems fan’s if you need to. I prefer this app [https://www.tunabellysoftware.com/tgpro/|TG Pro].
+
First MacsFanControl is not very good as it doesn’t get you enough useful information or offer the better way to manage your systems fan’s if you need to. I prefer this app [link|https://www.tunabellysoftware.com/tgpro/|TG Pro].
But your issue is not the CPU Diode that’s just merely the sensor within the CPU chip frame and not the GPU at all.
Your real issue is likely a simple dust buildup! Over time the fan blades and the heat sink fins get clogged up with dust and other debris making it harder to shed the CPU & GPU’s heat and your reaction is pump up the fans RPM’s which then wears the fans out and at some point one or more fans fail as they where pushed too hard with all of the junk loaded on them!
-
So the ODD fan gave up and now needs to be replaced! Here’s the guide to get to it [guide|923] Here’s on source for the fan [https://www.thebookyard.com/product.php?cPath=34_122_171&products_id=8817|20” iMac Optical Drive Fan, Apple P/N 922-8841]
+
So the ODD fan gave up and now needs to be replaced! Here’s the guide to get to it [guide|923] Here’s one source for the fan [link|https://www.thebookyard.com/product.php?cPath=34_122_171&products_id=8817|20” iMac Optical Drive Fan, Apple P/N 922-8841]
But you really need to pull the logic board so you can get to the head sinks to clean them as well as the other fans [guide|932] To do it properly you’ll need a small soft paint brush that you can use to scrub the fan blades and cowlings and the head sink fins as well as the rest of the system. Then using a can of can’ed air with short blasts blow away the junk.
Given the age of the system I would also recommend cleaning off the old thermal paste (TIM) and apply a fresh coat. Keep in mind it doesn’t take much for the task! I often got systems in after people tried, they would empty every last bit of what they bought coating everything! So wrong! To help you see how much you really need take a single layer of face tissue cut it down to the size of the chips heat spreader now using some water wet it and roll it into a tight ball thats how big the amount you want of TIM for that chip. Here’s the needed kit to do this job [product|IF179-010-2]
You’ll need to find someone with Mac repair skills to fix your system. As these systems can be a bit tricky.
First MacsFanControl is not very good as it doesn’t get you enough useful information or offer the better way to manage your systems fan’s if you need to. I prefer this app [https://www.tunabellysoftware.com/tgpro/|TG Pro].
But your issue is not the CPU Diode that’s just merely the sensor within the CPU chip frame and not the GPU at all.
Your real issue is likely a simple dust buildup! Over time the fan blades and the heat sink fins get clogged up with dust and other debris making it harder to shed the CPU & GPU’s heat and your reaction is pump up the fans RPM’s which then wears the fans out and at some point one or more fans fail as they where pushed too hard with all of the junk loaded on them!
So the ODD fan gave up and now needs to be replaced! Here’s the guide to get to it [guide|923] Here’s on source for the fan [https://www.thebookyard.com/product.php?cPath=34_122_171&products_id=8817|20” iMac Optical Drive Fan, Apple P/N 922-8841]
But you really need to pull the logic board so you can get to the head sinks to clean them as well as the other fans [guide|932] To do it properly you’ll need a small soft paint brush that you can use to scrub the fan blades and cowlings and the head sink fins as well as the rest of the system. Then using a can of can’ed air with short blasts blow away the junk.
Given the age of the system I would also recommend cleaning off the old thermal paste (TIM) and apply a fresh coat. Keep in mind it doesn’t take much for the task! I often got systems in after people tried, they would empty every last bit of what they bought coating everything! So wrong! To help you see how much you really need take a single layer of face tissue cut it down to the size of the chips heat spreader now using some water wet it and roll it into a tight ball thats how big the amount you want of TIM for that chip. Here’s the needed kit to do this job [product|IF179-010-2]