[Help Request] MSI MAG CORELIQUID 240R V2 - Extreme Temp Spikes (50°C jump in 5s) - Pump Failure?

[atmaca2120015b502e4]

Hi everyone,

I am looking for some expert advice regarding my AIO cooler. I suspect my unit might be failing, but I want to be sure before I start the RMA process, as I only have a few months of warranty left.

System Specs:

• CPU: AMD Ryzen 7 3800x
• Cooler: MSI MAG CORELIQUID 240R V2
• Purchase Date: June 2023 (Warranty expires soon)

The Issue:I am experiencing sudden and massive temperature spikes. The CPU temperature jumps by approximately 50°C in just 5 seconds under load (or even moderate usage), which seems physically impossible for a functioning liquid loop unless the flow is severely restricted or the pump is dead.

What I have:I have recorded detailed thermal logs during these events.

• I have CSV files containing the exact temperature behavior, pump RPM (as reported), and fan curves during the spikes. But forum does not let me upload them. I can email them to you if needed.
• If there is an expert here who can interpret these logs to confirm a pump failure or clogging issue, I would be happy to share them.

Has anyone experienced similar behavior with the V2 version of this cooler? I know the V1 had a recall, but this is the V2.

Any insights on the logs or the issue would be greatly appreciated before I send it in.

Thanks!

 

[fatedust]

Even the pump fan RPM is normal, it is still possible that something went wrong inside; for example, the sediment that blocks the liquid from passing through CPU.
Have you tried to touch and feel the tubes? When system is under load, is one tube very hot while the other is cold? How about the radiator?

 

[atmaca2120015b502e4]

I also suspect sediment buildup. When the pump runs at max RPM, I can hear a fizzing/gurgling sound, like water being forced through a tight space. Regarding the tubes; yes, I tested them and one is warmer than the other, but the difference isn't extreme (maybe 40°C vs 50°C), even when the CPU is at 100°C.