I've just spent ~1 hour trying to get a pair of Powerline adapters to .... pair.
This involved pressing a "Pair" button on one adapter and then running through the house to press the corresponding "Pair" button on its .... pair.
The answer ?
RTFM ( Read The Flippin' Manual )
To paraphrase: -
Step 1:
Press and hold the Pair button of Powerline adapter A for 1 second, the Power LED will start flashing.
Step 2:
In 120 seconds, please press and hold the Pair button of adapter B for 1 second, the Power LED will start flashing. About 60 seconds later, the Powerline LED on both adapters will light up.
In 120 seconds, please press and hold the Pair button of adapter B for 1 second, the Power LED will start flashing. About 60 seconds later, the Powerline LED on both adapters will light up.
The key ?
Yes, press for ONE second.
For the record, I have the TP-Link AV200 WiFi adapter ( with two Ethernet ports ), connected to my TV and my Humax PVR, plus an associated adapter next to my router. I've got another one lurking around somewhere else, connected to my NAS and my Mac Mini.