How To Repair Tv Power Supply No Power Out

Wonder how to tell if TV power supply is bad? If your LED/LCD TV gives y'all a black screen or won't turn on, you may exist experiencing a ability supply or mainboard problem.

In this scenario, you will have to track where the problem is coming from and determine if you demand assistance from professional Tv set repairmen.

Just earlier yous contact a professional electrician, you take to know how to tell if the tv set power supply is bad.

Sometimes the power supply and the mainboard failure may accept like symptoms. Catching these symptoms early can forbid severe repairs on your flat-screen TV.

If yous get dwelling and turn on the tv and detect a black screen, or it won't plough on, you may be encountering a power supply problem.

But before you start opening the tv, in order to detect and rail the power supply, brand sure the Telly is non in warranty. Because if you open the body of the Telly, it volition get invalid. Too, ensure y'all have the required tools prepared around you.

How to Spot Mainboard Failure?

If you are not sure if the issues, come from the power supply or the mainboard, you will have to tear autonomously the body of the TV. But how to tell if a tv mainboard is bad or the power supply?

The main divergence between mainboard and ability supply failure is elementary to spot. If you experience mainboard failure, the Tv set will plough on but shows a blue or black screen or just get off again.

However, there are more than led goggle box main board failure symptoms that y'all tin can find if your mainboard is giving upwardly.

Symptoms that you lot may feel a bad mainboard

Missing Sound
HDMI Ports are Not Working
Unable to Connect to The Internet
Television receiver Locks Up
Drastic Noise Fasten and TV Shuts Downs

How to Examination the Mainboard of Your LED/LCD Tv?

To place the dead mainboard, you lot will have to remove the dorsum panel of your TV and notice the mainboard.

Therefore, unplug the cables between the power supply and the mainboard. If the device's light is even so on, this means that the power supply board is working, and you experience mainboard failure.

However, if this seems too complex, you tin pay for diagnostics at a Television repair service, find the trouble, and replace the role yourself.

How to Tell if Television set Power Supply is Bad? How to Runway information technology?

Power supply problems tin exist simple to solve if you lot work consistently. Yet y'all may face more than complicated cases. When information technology comes to tracking the power supply, you accept to offset from the showtime of the electrical circuit.

Mutual Power Supply Problems:

Blown Electrical Outlet
Desperately Connected/Damaged Power String
Dead Fuse
Bad Filter Capacitor

Steps to Rail and Tell if Ability Supply is Bad

1. Switch the Outlet

Before tearing autonomously your TV with screws and pliers, make certain that the ability supply problem is not coming from outside the Boob tube. Did you try to switch the electrical outlet? Even if the outlet looks brand new, there may be no electricity.

To prove that at that place is no electricity reaching the power string, you can use an electric voltage tester (phasometer). Another style to test the outlet is to plug something else in it and see if information technology works.

2. Check the Power String

Later on you lot check the electrical outlet and try to plug the Tv set in another, merely even so no results, motility to the ability cord.

First of all, examine the power cord. Are there visible cuts or scratches? If there isn't visible damage on the cord, move further.

Ensure that the power cord is connected correctly to the Telly socket. If there is a sloppy connectedness between the string and the Television set, you will experience a bad ability supply and flickering screen.

3. Adjacent Step-Open up Upwards The Television

In instance the trouble isn't coming from the power string or the outlet, yous will have to open up the Television receiver. But before this, brand certain that the Television is unplugged, and so you don't go an electric stupor.

When this is done, unscrew the screws of the back panel and remove them. At present you can locate the power board and the mainboard and detect the defective component using the electrical voltage tester.

Sometimes from first sight, y'all can tell if Idiot box power supply is bad. But non ever you lot need a meter. Some of the components within may accept visible damage.

iv. Examine The Power Supply Board

After locating the power board, make sure everything is connected tightly to the sockets and there is no dust around them. And then move to the individual components of the ability supply board and examine them. Some of them may be blown or expressionless.

five. Diddled Fuse

Every power supply board has a fuse that can blow up due to a storm or power surges. To check if the problem is coming from the fuse, you can apply an ohmmeter.

A blown fuse is one of the well-nigh common problems to tell if the power supply is bad. In private cases, yous can detect a blown fuse only past a wait.

Note that if the fuse is non causing the problem, and you supervene upon it, the new one will also blow. So, make sure you use a meter to test the fuse before y'all kickoff replacing it.

half-dozen. Bad Filter Capacitor

The next thing y'all should spotter for is the capacitors. They are tiny cylinders, and from kickoff sight, you tin tell if they are causing the power supply trouble. Unremarkably, if they are bad or not working, you lot may find 2 things.

The filter capacitors tin exist raised at the tiptop or leaking fluid, indicating that they are bad or already not working.

In the end, if y'all follow the steps and trace the source of the problem, you tin can tell if you actually have a bad power supply and supervene upon the defective component.

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Conclusion

Tracing power supply issues is not piece of cake, and not everyone can practice it alone. But if you lot feel enthusiastic and follow the steps that we mentioned, you can at to the lowest degree observe the source of the problem past yourself.

And at present yous know how to tell if Television ability supply is bad. Remember to check the outlet and power cord before yous make it worse than information technology was.

Kevin has over v years of experience working in various Tech startups and providing Technical solutions. He has contributed to many Tech publications and websites.