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Samsung tv poweres on but get no picture or backlight but i get audio and i did the flashlight test and i see some image

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  • Samsung Expert
  • 279 Answers

Checked Back Light strip , most of LED back light get burnt

Posted on Dec 19, 2018

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6 Suggested Answers

6ya6ya
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SOURCE:

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Posted on Jan 02, 2017

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gopakumarg43
  • 76046 Answers

SOURCE: TV turns on, but no backlight, no audio, no picture

Power supply regulator board fault. Check and replace damaged component/s at it main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" or "Magazine" will make surf easy. Surf the site with patience. Pull up older posts. Do asearch by type in the brand name of your device at its search box.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.

Posted on Jun 23, 2014

mattdehat
  • 1472 Answers

SOURCE: I have a samsung UN50EH5000F LED TV. I have a blank screen. I have audio and if you put a flashlight to the screen there is an image. There are no backlights

have a look round this site.very good guides.hope it helps...

Posted on Feb 06, 2016

  • 1682 Answers

SOURCE: When testin a power supply or led board on tv do i test dc or ac with multimeter?

Your power supply board is working if you get audio and imgaes.

You test AC only the AC side of the transformer before the Rectifier Diodes. Everything after the Diodes will be in DC.

did you get to see any spec of backlight as shown in
LCD LED TV Repair No Image Blank Black Screen Flashlight Test How to Fix...

Posted on Mar 23, 2016

gopakumarg43
  • 76046 Answers

SOURCE: How do I fix my Toshiba LCD TV that no picture or audio?

Fault at its main digital board. Short circuited component/s at it. Contact any service technician; or the authorized service center. 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/
In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.
Before going further; try a hard reset first. If it does not help you, replace the main digital board. There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; visit the site linked here. ..

Posted on Aug 08, 2016

Testimonial: "Your link have no past posts for this model. I do my own servicing since 1966, and worked with RCA radios and TVs with vacuum tubes, so all I need was a guide to confirm that the main board could be bad. BTW, how can I test the backlights? They have two signals "Dimmer" and "Inverter" which are always at zero volts. Which one will turn the backlight inverter on?"

SOURCE: Toshiba 42 inch LCD with no picture but sound. Flashlight test shows image on screen. No backlight visible with power. Inverter board?

In most of the case, the LED back lights strip is out.

Posted on Aug 29, 2017

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1 Answer

Samsung tv, model UN39FH5000FXZA. Have sound, no picture, black screen. no backlights. flashlight test shows image. What should I replace?


Lamps in the panel are bad...DON'T order the power supply like someone says on about every post he answers before testing the LED lamps or you will waist a lot of money.

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I think your on the right path, start with the tcon board, could be the main as well but the tcon is way cheaper so start with that

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The Audio and Video are two separate components and operate independently of each other. Therefore: The Video portion requires technical repair by a technician with the proper test equipment.

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Can you help me troubleshoot my TV? It has audio but no picture.


Use a voltmeter to confirm all the voltages are present when the TV is powered on. If they are all correct then replace the led driver.

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Do flashlight test - if you can see image you need t con board. If no images seen, inverter board. TV Parts Universal TV Stands DLP Chips ShopJimmy

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Perform flashlight test to see if the problem is with the backlights inverter board.

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1 Answer

TV Samsung 50 UN50EH5300FXZA BJ04. Sound but no picture. Replaced all boards, still no picture. Flashlight test saw image.


Hi Rick,
It appears to be a case of backlight failure. since you have replaced all the boards, inverter is ruled out. Some of the LEDs in the backlight array may have gone bad. Fault is repairable, but needs care and experience of opening and repairing the LED panel. Good luck.

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1 Answer

When testin a power supply or led board on tv do i test dc or ac with multimeter?


Your power supply board is working if you get audio and imgaes.

You test AC only the AC side of the transformer before the Rectifier Diodes. Everything after the Diodes will be in DC.

did you get to see any spec of backlight as shown in
LCD LED TV Repair No Image Blank Black Screen Flashlight Test How to Fix...

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