hello, does anyone have a diagram of the motherboard for the philips tab 8907 soundbar. The problem with this soundbar is that there is no sound, it connects to the phone via bt or using another input and there is no sound, even when turning on the soundbar there is no sound. (I saw a thread on redit and it was recommended to download the appropriate firmware via usb. Unfortunately, this method requires a remote control to enter the settings, unfortunately I do not have one)