I have a new QLED 6DA 55" TV for the bedroom on a wall and when it is in standby mode there is a consistent tapping sound coming from the back of the TV that is just loud enough to keep me up at night. It sounds like a raindrop falling from a tree onto your roof. When you unplug the TV it stops. Samsung replaced the power supply board but it still does it. Because Samsung's return policy is unacceptable I purchased another TV of the exact same size and model thinking there is no way it would happen on another TV, but guess what, it does the same thing on the new TV. Either Samsung knows about the problem and continues to sell these TV's or they have never put one in a quiet room and listened to it. In a non sleeping area you'd never notice it. I'm hoping an engineer will be able to tell me what it may be. I noticed after turning off the TV with the remote it waits for about 10 seconds before the tapping resumes and it starts with 5 quick taps before settling at 1 per second. I have turned off the screen saver and auto updates but it still does it. HDMI is plugged into HDMI1. FYI
I can definitely understand your concern here. Let's try to alleviate some of the stress by trying this link: https://www.samsung.com/us/support/troubleshooting/TSG01202486/ Please read the link in its entirety to reap the full benefit of the troubleshooting. If this does not help I recommend letting a service technician have a look. As we would like to gather additional information and look at this from a case-by-case basis, please provide the full model code and the serial number of the device as well as your best contact phone number, name, and email.
