While there are many possible causes behind the problem, many users reported the issue after a power outage. It can also show up when you directly pull the power cord from the wall outlet without turning it off using a remote. Having said that, outdated TV firmware is also equally culpable. This article will teach you how to sort out the red light blinking problem easily in a few steps. In the end, you will also learn how to replace a faulty power supply board on your Samsung TV.
How to Fix Samsung TV Red Light Blinking?
If a red light blinks on your Samsung TV, you should first perform a soft reset. Many people in the tech forum stated that they solved the issue after a soft reset, and I, myself, was able to sort out the problem using it. What you need to do is unplug the power cord of your TV and give it a rest for about an hour. It will help cool down the fragile components on your TV, like Integrated Circuits (ICs) and transistors. After an hour, press the power button on your TV for 2 minutes. Plug the power cord back into the power supply and wait for another 2 minutes while you are still holding the power button. It should solve the problem without further hassles. Otherwise, there are a few fixes discussed below you can follow easily.
Remove Voltage Control Devices
Samsung TV needs a constant voltage to operate, usually between 100V-240V. If the voltage fluctuates and goes above or below the specified level, the TV can not turn on due to the variation in voltage levels. If you are using any voltage control devices like a surge suppressor or stabilizer, consider removing them. They can sometimes malfunction and output inappropriate voltage. As a result, the TV can not function properly, and the red light indicator starts blinking.
Solve HDMI Issues on TV
Next, you should choose the correct source for your TV. If you have connected the set-top box or any other device via HDMI1 port on your TV, set HDMI1 as a source. Setting the source to HDMI2 will prevent the input from the HDMI1 port and result in a black screen, including a red light blink. The red light blinking problem also arises due to the HDMI issue on your TV. HDMI devices like set-top boxes or gaming consoles should be properly turned off before unplugging them from the TV. At the same time, make sure you change the source to a TV or USB before removing them. If the source is not changed before unplugging those HDMI devices, the TV will keep fetching the input from HDMI. It won’t find the input signal, and as a result, the red light starts blinking. Moreover, sometimes, the HDMI cable can be faulty as well. Try changing the cable and see if the problem persists. Also, remove all the devices connected to the TV one by one. This way, you can know which device is causing the problem and troubleshoot it accordingly.
Update Your TV
Red light blinking can also be a symptom of outdated firmware. If your TV has outdated firmware, consider updating it to the latest version. The steps to update the firmware are similar in most Samsung TVs. If you own an Android TV from Samsung, follow the steps below to update it.
Reset TV to Factory Defaults
Resetting TV to factory settings is the last software fix you can apply to solve the red light blinking problem. If there are any software issues, most probably a corrupted OS or system files and drivers, resetting will help solve it.
Fixing the Power Supply Board
Now that you have gone through the basic fixes, you must have figured out a solution. However, you probably have a bad power supply board if you are still encountering the issue. There can be three cases when the power supply board stops working.
Blown a fuseCapacitors are damagedNo DC output from the power supply board.
You can quickly check the fuse and capacitors and do a power supply test on your TV. Please consult this detailed guide to diagnose issues with them. If you find that the board has been fried up and you need a replacement, below is a step-by-step guide on how to replace the power supply board on your Samsung TV. If there was a power supply unit failure, replacing it should solve the problem, and you should no more face an issue. However, if you still encounter the red light blinking problem, there may be an issue with the main board. Consider taking your TV to the repair center and repairing it.
