Question about Samsung LN40A650A LCD TV

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My samsung tv replace the power supply board. got sound no pictuer replace the backlight inverter stell no picture

Both power supply and backlight inverter are new

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You have to check whether the back-light inverter gets its proper voltages to function. There as many voltages that controls the back-light inverter. Check these is a skilled work. Contact any experienced service technician. If you are not familiar with electronics, do not attempt to repair. Whether you suffer fatal electrical shock! Instead, contact the nearest service center.

Posted on Jan 24, 2013

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  • 2 Answers

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Posted on Jan 02, 2017

  • 2315 Answers

SOURCE: Samsung LN-S4051d power supply board

The replacement of the power supply is quite easy. You will have to remove the base if applicable and the back cover, once you remove it; you should see the power supply.
Click here to see how the power supply looks like and availability or Click here to find a cheaper one.

I can also repair your power supply. If you need further assistance you can write to jah2mil@hotmail.com

Posted on Jan 05, 2009

  • 133 Answers

SOURCE: Screen goes completely out.

when it blanks out, tuen the lights out in the room, and shine a flash light at the screen, see if you can see the picture, if you can, it is the inverter moard blamking out, thats the board that lights the back lights, if you cant, hit the input button on the remote, if the TV comes back with a picture, it is a problem with the main board, in paticular the componant input on the main board

Posted on Jan 10, 2009

Cool_dud 09
  • 206 Answers

SOURCE: power supply board

Hai,
Please check on here....you will find it out!

Posted on Aug 23, 2009

circuitworld
  • 335 Answers

SOURCE: Samsung FP-T5084 No picture

For a 50 inch plasma....its worth it, in my opinion y-boards cost around $149 to $189

Posted on Nov 03, 2009

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  • 8457 Answers

SOURCE: We have Samsung LCD model LN26A450C1D, which is

The tv Tuner board is dead,that the board,where the brocasting incomming signal cable connected into it.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish Tuner board for the replacement.

Posted on Jul 22, 2010

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I have an LG 47LN522-UB LED TV that stopped working after three years and need help diagnosing a problem with it.


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://electronicshelponline.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.

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shaun

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Why is my replacement LED Power Supply Board not functioning properly?


Power supply board is not the culprit - check out your inverter board which is responsible for the back lighting.

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I have a Samsung LN40A450C1D TV that has sound but the backlight doesn't come on. I replaced the power supply board and same problem. I then replaced the backlight inverter. Same problem! I'm absolutely...


You have to check all the voltages, that comes from its main power supply board, to its back light inverter board. These is one pin at the backlight inverter board; comes from the main board; which controls the back-light inverter to start and off. This voltage is generated at the main board, and send to the back-light inverter board, as control voltage. It will be best to contact any service technician. If you wish to get some details; check the site linked here.Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/

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1 Answer

Replace the power supply and the backlight inverter to my samsung has sound but no pictuer can u help


Check whether CCFL lamps are good or not. Check whether the newly replaced back-light inverter functions well.

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1 Answer

Tv shows no picture or sound or menu options


replace power supply or inverter board (note)some power supplies have inverter circuits intergrated on the power supply circuit

Jan 21, 2013 | Element Electronics Televison & Video

1 Answer

I have a 1 yr old samsung flat tv that has a sound but no picture..how can i fix it. i am in an isolated island here in basco, batanes philippines with no experts in repairing flat tv.pls advice. tnx


Hi,
Kung LCD TV ang unit mo, 3 ang dahilan kung kaya la kang picture.
1. Me pundido kang backlight - kapag me pundido kang backlight kusang pinapatay ng power supply ang inverter board para hindi ma-overload kaya la kang picture. Maaring mong i-check ang backlight, ang palatandaan na ito ay pundido ay kapag me itim sa magkabilang dulo.
2. Sira ang inverter board - ang inverter board ang nagbibigay ng high voltage sa backlight. Kapag sira ito, natural d gagana ang backlight. karamihang sira ng backlight ay ang high voltage transformer, driver transistor o kaya me open na fuse/fusible resistor.
3. Power supply- kapag la supply voltage sa inverter board, la ka rin picture. Mas maganda kung ito ang sira dahil mas madali makhanap ng pyesa dyan sa lugar mo di katulad ng 2 nauna.
Kung me kakilala kang technician dyan malapit sa lugar nyo, patingnan mo yong mga sinabi ko. Maari ring dahil sa loose connection kaya la ka picture o kaya bad solder joints.
Salamat kapatid sa pagboto 4 na hinlalaki.
Jdvillanueva
Las Pinas NCR.

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Bravia kdl-40s4100 has no sound, no picture. Checked the line fuse to the HV power supply and it checked good. PS problem? Where can I find a replacement circuit board or would I be better off replacing...


The 2 long boards call the LCD inverter boards are dead.These 2 long LCD inverter boards are dead,must be replaced.These 2 long LCD inverter boards help the LCD screen to have a backlight to have a picture.Tries websites like Shopjimmy.com,Ebay.com to buy those 2 long LCD inverter boards for the replacement.

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1 Answer

After a storm still have sound no pictuer. caps look good ,fuses check good .tv 23months old little usage.


Check to see if you have 24vdc comes out of the power supply, this 24vdc is used for the backlight inverter board, if you do have the 24vdc, then check the fuses on the inverter board.
You may need the power supply module or the inverter module.
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=Samsung+LN-T4061F+

http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net

Jun 15, 2010 | Samsung LN-T4061F 40 in. LCD HDTV

1 Answer

PLTV 26 LCD TV sound-no picture


I would suggest to check the 24 volts from the power supply to the backlight inverter board. If the voltgage is missing or lower then 20 volts, the power supply is defective. If the voltage is correct, you might have a defective light inside the TV behind the screen since you've replaced the backlight inverter board; you now the failure is not there. The lights are connected to the backlight inverter board.
Let me know if you need further assistance.

Jul 30, 2009 | Protron PLTV-32 Television

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