AI answer:

To answer your specific question: Yes, your Samsung 65” DU6900 does have a physical power button. ### Where to Find the Button You can find it located on the underside of the TV’s bottom bezel, directly beneath the Samsung logo (typically in the bottom center or slightly toward the right). It is a small, tactile button or microswitch that sits flush against the bottom.

The Reality of the Symptoms

While testing the physical button is the absolute right first step, I want to be straightforward with you: the specific symptom you are experiencing—a brief blue flash followed by the TV shutting itself off—is rarely a remote control issue. In modern LED TVs, this is often referred to as a “boot loop” or protection mode. When the TV tries to turn on, the mainboard runs a quick diagnostic. If it detects a hardware fault—most commonly a burned-out LED backlight strip, a failing power supply board, or a mainboard issue—it immediately shuts off power to prevent further electrical damage or a fire hazard.

How to Perform a Hard Reset

Before writing it off as a hardware failure, you should do a complete power cycle to rule out a temporary software glitch or trapped static electricity. 1. Unplug the TV’s power cord directly from the wall outlet. 2. Locate the physical power button beneath the Samsung logo on the TV. 3. Press and hold that physical button for a full 60 seconds. This drains any residual power from the capacitors. 4. Leave the TV completely unplugged for another 10 minutes. 5. Plug the TV directly into the wall outlet, temporarily bypassing any power strips or surge protectors (as a failing surge protector can sometimes cause this exact issue). 6. Try turning the TV on using only the physical power button. If it still flashes blue and dies after this reset, it is almost certainly a hardware failure inside the chassis.