My problem already detected and existing and never disappeared since 2018, then due to transfer from Italy to Gemania I did not finish the assistance path, (now I made a move and I brought it here.
The playbar emits a whistle, high-pitched hiss, like fax noise, tried again at factory settings reset, with and without optical cable connected to the TV, add and removed other speaker from system updated firmware, tried with other power cable, off and disconnected nearby devices, disabled wifi , tried network cable, etc., as soon as I feed the playbar, the whistling whistle starts, tried other electrical outlets but the annoyance is always there, I don't want to make other attempts to exclusion and waste more time, in the case of procedures that already have previous solved the problem then I can give it a try.
since the problem is known and had by many other people I ask to send my playbar directly to service, and also an estimate before shipping of the repair costs based on the cases already resolved.
diagnostic number: 1486495154
video with audio problem:
old numeber of ticket: 00241147
Thanks a lot
Angelo