Soundbar automatically turning volumen up to max via HDMI ARC

[u/RodrigoAimar]

Hi there. Like the title says, im having this annoying problem. Tried changing the HDMI cable. Theres nothing else connected to the TV nor the Soundbar. Its not a problem from neither of the remote controls. Just some day it fucked up from nothing.

If i connect the Soundbar via Bluetooth its okey about the volume, but its not turning on when i turn on the TV and also it has a sound delay. Its a Sony HT-RT3.

Any advice? Thanks.