Question about Samsung Televison & Video

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

Samsung LED TV model number: UN65JS9500FXZA Was watching TV, heard a pop, then the image went out. No backlights, but image shows up with flashlight test. I do have audio. (So I suspect TCON and main board are good) After opening the back panel, I can isolate a steady and moderate clicking noise to the power supply board. All capacitors appear intact. No burn marks on the front or back of the power supply board or LED driver board. I believe I need to replace either the power supply board or the LED driver board. Due to the clicking noise, I believe I should begin with the power supply board. Would you agree? Thanks for any advice!

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  • Samsung Master
  • 10,543 Answers

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.

Posted on Jan 13, 2018

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: power light comes on and clicking is heard but no

your problem is more a defective y board with y buffer boards one of them is short

Posted on Oct 26, 2010

gopakumarg43
  • 76054 Answers

SOURCE: Samsung 50 smart LED tv has no backlight but has audio and sound.

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.

Posted on Nov 13, 2016

AJIN G
  • 6694 Answers

SOURCE: LG LED TV. 50LN5700UH. Picture out. It will flash LG Logo on power up then go black. Image is present by flashlight test. Audio is also present. Power LED is also lit.

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electro-medical.blogspot.com/
To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Posted on Jan 02, 2017

emissionwiz
  • 84966 Answers

SOURCE:

Give it up and just replace the TV.

Posted on Jul 13, 2017

  • 2794 Answers

SOURCE: LG 47LN5750 No picture

If you have backlights its not going to be the tcon for future reference. you have some shorted or open LEDs in the panel. Check the voltage going to the LED sets, should be 100 plus volts

Posted on Nov 16, 2017

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