Six months after connecting Beolab 20 speakers to a 2014 Avant television, from time time to time when turnig on any source on the tv through the Beoremote 1, a very loud static like sound will come through the left Beolab 20. If I turn off the telelvsion source and restart, the source's  vision and sound will come on just fine again. The problem will disappear for a week or two, then sudedenly when urning on a source, the loud static sound will come back again which can only be corrected by turning off the televison and restarting. I have checked the router, restarted it, checked the cables of the Beolab 20's, disconnected the mains from the back of the Avant, checked for updates; etc. I dont want to have to bring the televsion in for service from Columbus to Cinncinnati, Ohio where there is a B&O store located. I am wonderfing if there is perhaps something wrong with the televsion P1-P5 connections. Any suggestions from anyone for this issues are much appreciated in advance before I have to call CIncinnati for service.

Finally, I was wondering if anyone had any experience in using the Beloab 20's wirelessly with the Avant which I assume uses a totally different unit of the television. Is the performance of the Beolab 20's truly as "immaculate" as advertised with the Avant and also other wireless B&O units and B&O cores located throughout the house. If using the Beolab 20's wirelessly with the Avant is an easy way to remedy the problem, I would like to proceed. Any suggestions or guidance at all would be appreciated, and thank you in advance.