Despite being some of the best TV units one of the major causes for concern is the Emerson TV power light blinking but doesn’t turn on.
Emerson televisions are easily some of the most used TVs in North America, particularly in the US, which is no small feat for any electronic device.
Many people have these television sets because they’re very reliable and seem to work pretty well.
Often this is caused by a power supply issue, which will require you to fix the power supply. You may also need to replace a few faulty capacitors, change the Mainboard or clean off the dust from TV fans.
Note that you must have some electronic testing skills and tools to troubleshoot the TV.
Reasons Why Emerson TV Power Light Could be Blinking Green
Like other smart TVs, Emerson TV’s blink codes can be deciphered by several methods.
Aside from the most frequent causes, here are other reasons why your TV power light blinks green:
Inverter Board Issues
The voltage of the TV backlight inverter must be 24 volts. Installing an inverter incorrectly is also a common reason for failure or malfunctioning, in which case you’ll need to install a new inverter altogether.
Overheated Mainboard
The blinking power light can also be caused by your TV being overworked. You’ll need to relax the TV by switching it off for some time, usually 30 minutes.
Worn out Wires
Smart TV boards have very sensitive wires which can wear out pretty quickly.
Because of their sensitivity when board wires are worn out, you’ll have to get a technician to replace them.
How to Fix Emerson TV Power Light Blinking
Solution #1 Replace the Power Supply Unit Board
If the front power LED light is blinking green with no sound, and no display, here’s how to fix the power supply problem:
Step 1: Check to ensure power supply output voltage is at least 5 Volts.
Step 2: If standby voltage drops to less than 4.5V, cut off the power, disconnect the power cable from Mainboard then check if the standby voltage is still the same as before.
Step 3: If it’s the same it means the power supply there is a drop-in Power Supply Unit standby voltage, and you should replace the PSU board.
Step 4: If the Power Supply Unit standby voltage is 5V when connected with a loader it means there is a problem with the Mainboard, and you should replace it.
Step 5: Another fault component of standby voltage supply to the TV Mainboard is capacitor leakages, and they should also be replaced.
If the power LED light blinks green non-stop do the Power Supply Unit voltage self-test as soon as possible.
Solution #2 Clean Away Dust on TV Fan
As you probably already know, TV power boards can get pretty hot, and a fan is used to blow away excess heat.
If the blades are clogged with dust, the fans will not turn as fast as they were designed to.
Your Emerson TV power light blinking issue can be caused by overheated power boards because the dusty fans can’t dissipate heat efficiently.
Here’s how to clean the fans:
- Switch off your TV and unplug it from the power supply.
- Open the back cover of your TV using screwdrivers.
- Get a soft brush.
- Locate the power board, then clean away the dusty fans gently.
- Screw back your TV back cover, then plug it back to the power source.
Once you’ve cleaned the fan blades from your TV, then it will be able to work without any problems.
Solution #3 Replace TV Mainboard
Here’s how to replace the Emerson TV mainboard:
Step 1: Check the output voltage for the Power Supply Unit.
Step 2: If there is no voltage output, disconnect the main connector from TV Mainboard then check Power Supply Unit standby voltage is between 3.3V and 5V.
Step 3: If the Power Supply Unit has a standby voltage between 3.3V and 5V but no power on the signal it means the Mainboard is the problem and you should replace it.
Step 4: Check the front panel keypad as well as the TV remote control to power on the TV before confirming it’s the TV Mainboard.
Step 5: If the Mainboard and remote control can’t power on your TV, you’ll have to replace the Mainboard because it’s defective.
Solution #4 Replace Bad Capacitors
The failure of your TV’s power supply may be due to capacitors going bad could be the reason for the Emerson TV power light blinking green.
It means the level of voltage going into the Mainboard is insufficient to power the TV. There are two capacitors in Emerson Smart TVs that you should look out for.
The capacitor may be overheated due to poor cooling. Check the capacitance meter.
If it reads more than 10 percent of the rating printed on the capacitor, replace it with a new one, which will cost you between $6 and $10.
Here’s how to replace a bad capacitor:
Step 1: Unplug your TV from the power source then use a screwdriver to remove the back covering.
Step 2: Locate bad capacitors on the Mainboard and power board of your TV.
Step 3: If you need to discharge a capacitor, hold the insulated blade of a screwdriver across the two metal terminals that extend from the capacitor.
Step 4: Use a mounting strap to install a new capacitor on the same spot as the old one.
Step 5: Test the new capacitor by turning the power on then put the back cover of your TV back on.
With a replaced capacitor, your TV should work fine with no blinking power light.
When your Emerson TV power light blinks green, it’s almost always a power issue that can be fixed by either replacing the Power Supply Unit (PSU) or the Mainboard.
However, before diagnosing the PSU or the Mainboard, ensure all capacitors aren’t faulty and that the TV fan blades don’t have any dust.
Read Next: Why Emerson TV Turns On Then Off?
Conclusion
If your Emerson TV power light blinking issue is proving difficult to solve and you don’t have some electronic testing skills and tools to troubleshoot, consider getting help from a professional.
Unscrewing and opening up the back covering of your TV to run tests if you’re not sure about what you’re doing might lead to more issues and problems that didn’t otherwise exist.
