MBP retina: wifi drops out when screen goes dark

Hi there,
I've got a MBPr 15inch with the latest OSX version (incl. updates).
When my screen goes dark after 10 minutes of inactivity, my WIFI connection *always* drops out. So if I'm syncing something over Dropbox for instance, it will stop working. I basically have to make sure my laptop never goes inactive for too long. This is really annoying and one of a few other problems I'm having with this MBPr.
I've searched these forums, and there are people with similar or related problems but I couldn't find any solution yet.
Anyone else out there similar problems?
Thanks,
Kai

Hi f, and welcome to Apple Discussions.
It sounds like it could be a bad inverter board, but I don't know if that would cause it to happen only while using the power adapter. Depending on your exact model, it could be:
http://www.ifixit.com/MacBook-Parts/MacBook-Pro-15-Inch-Models-A1150-A1211-Displ ay-Inverter/IF185-090

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MBP retina: wifi drops out when screen goes dark

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