Hello!
Using a RP3 and looking at PVR tv.
When i use kodi 16 its show a quick “working” down the right corner and then nothing happens.
But if i install kodi 17 beta from LibreElec it works fine! so nothing is wrong with the stream or with the RP3. Any clue what it could be?
Without a log, no clue. You could try installing a v17 build of Kodi on OSMC and see if this helps.
How do i install v17 the easiest way?
And how do i get a log for you?
To get a better understanding of the problem you are experiencing we need more information, including logs from you. Our wiki contains detailed steps for providing the relevant info we need to help you.
sounds like chinese to me 
waits untill the real version realeses.
do anyone know when it realeses?
Only Kodi knows.
is it years or months or weeks you think?