Oil-like Stains Around Screws on New MikroTik RB5009UG+S+IN

Hardware MikroTik hardware general
1

Hello everyone,

I recently purchased a brand-new MikroTik RB5009UG+S+IN, but I noticed something unusual. Around the screws on the device, there appear to be oil-like stains. The device seems to be sealed and unused, so I’m not sure if this is part of the manufacturing process or something else.

I’ve attached a photo for reference. Has anyone else encountered a similar issue? Is this normal for MikroTik devices, or should I be concerned?

Any advice or feedback would be greatly appreciated!

Thanks in advance!

Second RB5009 showing internal moisture after 9 days
2

Do not know but it could be the effect of freshly oiled/greesed screwdrivers used during assembly process.

3

Common and not a problem. Have had it on 4 RB5009s I’ve fielded. Believe there have been multiple posts on this forum about this very thing.

4

loctite?

5

This is because of the thermal pads bleeding silicone oils through those holes. Not really an issue. :slight_smile:

6

Exactly! I have opened my device out of curiosity. It has the same stains. Cosmetic issue only.