Question about SEIKI Digital SE47FY19 47" LED TV 1920x1080, 60 Hz, HDTV

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How do I repair my Seiki tv?

No video or audio. will try to come on if you unplug for a minute or more and hold power button down for approx. 20 seconds but fades quickly

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Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.

Posted on Nov 22, 2014

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Posted on Jan 02, 2017

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I have TV Seiki model SE50FY28 when we turn on the TV, it works for a minute then the screen goes black, we still have audio and the flashlight test shows a faint image, what may the problem be?


Probably the back light inverter is faulty . Before going to buy a new inverter board tey to check the power supply. Which the bellow added video to know how to check a power supply board. You have to check the 24V power sto the inverter board from the power supply. if its not there then the problem is with power board. If its ok then you have to go for a new inverter board. Also try to replace the electrolytic capacitors in the power supply board. some times bad electrolytic capacitors can lead to back light failure.
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How can I find out what's the problem with my Seiki model#se40fy27 tv has audio but no video


Probably a "blown" capacitor on the TV's motherboard.
Evaluate whether it would be less costly to REPAIR or REPLACE the unit.

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Seiki TV is in burn mode It is flickering from red to blue to white to black etc


Hold down the physical power button the side of the television for 20 seconds. The television will automatically reboot into normal mode while you hold down the power button after that point.

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1 Answer

T.V shuts off and power light blinks.


Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
http://homenol.blogspot.com/
http://electronicshelponline.blogspot.com/
If blinks continue without any pause, the main board is faulty.
Search the site by type in the "brand name" to your device, [Exclude the model number] in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

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I moved my ps3 from my hdtv to non hd tv and used the 3 colored audio video wires to connect to the tv but the screen stays black


Hello, you will want to reset your video output.First with the power off, push and hold down the power button till you hear the second beep,then release.Your picture should show in approx 7 seconds.

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LG 20LS7D TV


1. Try this - hold the menu button down for 10 seconds. TV should power up; you will have to turn off front panel buttons on menu.

2. You can also try a hard reset: Unplug TV from AC mains and remove all cables from TV. Wait about 30 minutes and replug to AC power and redo the cabling. Switch on the TV and see if it works..

3. Powering down the set or putting it in standby may have allowed the power supply to cool. Weak capacitors often go out of spec when they cool, thus preventing a section of the power supply from firing up properly again. There is a simple trick...just warm the back of the TV with a hair dryer for 5-7 mins after you have unplugged the TV. Look for the little areas of holes in the back panel of TV. Use these as your guide at where to use the hairdryer, but don't hold the dryer too close (say 5-6inches away). (Make sure the dryer is on High heat). If the TV doesn't turn on after you have heated it up (like it tries to come on but then turns off) you need to unplug the TV again, this resets it. And repeat those steps till it works. Resetting the TV after it fails to turn on is the key.

then the fly back unit is failed you need to resolder the contacts or get it serviced...............

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Power lock enable


To get rid of the power button enable you need to either press and hold the power button on the tv ( not on the remote control pad) for approx 15 seconds or if that does not work do the same using the source button

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My Sanyo HT28745 28" HDTV clicks but doesn't turn on


I have had a similar problem with my tv, it has something to do with the power supply.Try unplugging your tv from the AC outlet. While unplugged from the power supply hold down the - volume control and then plug the tv back in while holding down the - volume control. It should bring up the service screen. If the screen turns on and is blank then it may need to be brought in for repairs.

If the screen does turn on, either blank or with the service menu, turn off the tv and unplug it from the power supply again. With it still unplugged hold down the power button on the tv and then replug in the tv. continue to hold down the power button until the tv displays a video signal on screen.

Feb 02, 2008 | Sanyo HT28745 28" TV

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