MP 1,1-5,1 Mac Pro 5,1 logic board corrossion?

[3Hpx5SN]

Two weeks ago I bought a 2011 Mac Pro 5,1. I picked up the machine at the seller, and was happy with the condition: inside and outside looked REALLY clean, which convinced me to buy it.

When I added new RAM last week, I noticed some discoloration on the logic board of the CPU tray. Is this corrossion of the metal contacts, or is it just a coating? Or something similar as 'GPU leaking'?

As I'm setting up the machine as my main work station, I'm doing extensive tests to stress the system (Prime95, Rember, …). I'm surprised how stable and cool the whole system runs. So I don't think this 'corrossion' affects anything, at least for now.

So, is this something to be concerned about? Or can this be cleaned in a way? I read using isopropyl alcohol?

 

[tsialex]

Two weeks ago I bought a 2011 Mac Pro 5,1. I picked up the machine at the seller, and was happy with the condition: inside and outside looked REALLY clean, which convinced me to buy it.

When I added new RAM last week, I noticed some discoloration on the logic board of the CPU tray. Is this corrossion of the metal contacts, or is it just a coating? Or something similar as 'GPU leaking'?

As I'm setting up the machine as my main work station, I'm doing extensive tests to stress the system (Prime95, Rember, …). I'm surprised how stable and cool the whole system runs. So I don't think this 'corrossion' affects anything, at least for now.

So, is this something to be concerned about? Or can this be cleaned in a way? I read using isopropyl alcohol?

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This is usual oxidation for MP5,1. These boards were produced from 2010 to late 2013 and there are several points without solder mask that oxidise exactly like your photos after 6 to 9 years.

You can clean it a little with isopropanol and some de-ox spray but what your photos show is totally normal.