TOPIC:

Hi, could anyone pleawe suggest how can I reset my R Link. Nothing on scree and not reacting to power on/off button. Music still plaing and can be changed and volume adjusted from steering wheel control. Long power button do nothing. Disconnected battery with light on overnight didn't help to rese. 

I had exactly the same, however the next day everything slowly came back to life, and now everything is working correctly.
Hope yours does too.

When hold you hold and press the radio power button until its screen goes black, It will cause a full reboot of the unit, that takes almost a minute to comeback...

I use this due to having an issue with a damaged radio anterna circuit (with earth leaks), that from time to time prevents my apple carplay from detetcing my iPhone
(currently waiting fom parts from France to fix it)