Dear B&O users,   I hope someone can help me. One of my two Beolab 6000 speakers recently won't wake up from standby (red light). I've tried swapping cables and output/input and made sure the speaker is on L/R (not on line). I have the service manual, but the particular problem is not mentioned. Does anyone know what to do to have the speaker work again? Big thanks to anyone who replies 🎅 Happy holidays.