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TV does not turn on - Troubleshooting Help - LED, LCD & Plasma TV

by TV Service Bangalore TV Repair Services in Bangalore

If your TV is not turned on remotely or by pressing the power button, try these troubleshooting steps. In these troubleshooting steps, we use a multimeter to check a certain voltage. Make sure you have the right training, experience, skills, and equipment to continue troubleshooting and use a multimeter to check voltages on the TV. Try all repairs and fixes at your own risk other than call TV service Bangalore. We have an LED TV here.

  • The first thing I can do is to check if there is a standby light in front of the TV. Some TVs may show standby light, while some TVs may not.
  • If I see the standby light in front of the TV, it will show that I have the power to go to the TV, but it will not turn on. We will continue troubleshooting. I removed the back cover of the TV and use my meter to check the standby voltage on the power supply.
  • First, locate the power supply on your TV. Then look for the cable that runs from the power supply to the mainboard. Then the board can see if there is a legend on it, which pins show what voltages. You want to look for something that shows a 5-volt standby. All boards are different, some have a legend, and some don't. Some are labeled pins and some are not.
  • If your board shows that the pin has a 5-volt standby, check that pin. 5-Volt Standby But if this doesn't show up, you want to check all the pins on the cable at once and look for one of them to be 5 volts. As you can see, both pins show 5-volt standby. I'll check pin 1. Make sure your TV is plugged in.
  • After you check the pins, if you have a 5-volt standby, but do not power your TV, I recommend changing the mainboard. If you do not have a 5-volt standby, you are not getting electricity from the power supply board, and if the TV is properly plugged in, I recommend replacing the power supply board.
  • Here's a quick recap of our first step to fixing the feature if your TV isn't powered on. If you check the 5-volt standby on the power supply, and your meter shows 5 volts, then your power supply is working, but the mainboard TV is not turned on. So, I recommend changing the mainboard.
  • If you are checking for a 5-volt standby, and you do not receive 5 volts on your meter, I recommend that your TV not receive power and replace the power supply. This test is a great place to start to address these symptoms.
  • In some rare cases, if you have a standby, and your TV is not powered on, the problem may be a part of the power supply board, however, to start troubleshooting, it is recommended to replace the mainboard first.

·        To replace the power supply board or main board, contact a TV service center in Bangalore. Only original parts are used in repair or replacement.


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Joined APSense since, January 6th, 2020, From Bangalore, India.

Created on Feb 6th 2020 03:42. Viewed 159 times.

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