Question about Sony Bravia KDL-40S4100 40 in. LCD TV

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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 TV?

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  • Contributor
  • 17 Answers

You have a power supply problem,please go to ebay.com and search for my store,texas-tvparts.
i have that power supply and more tv parts in stock and i can guide you on the repairs,thanks a lot!!!

Posted on Aug 13, 2010

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  • Sony Master
  • 8,457 Answers

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.

Posted on Jul 14, 2010

  • Chi Chu Jul 14, 2010

    Tries unplug tv about an hour and replug it back in, might get the tv to reset it self and work.

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  • Master
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Since you have no picture or sound, then more likely to be power supply or main board problem, so check the power supply output voltages first, shorted out backlight inverter board will also cause the power supply to shutdown also, so try disconnecting the inverter from the power supply board to see if the power supply will start back up and at least get the sound back.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Posted on Jul 15, 2010

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Posted on Jan 02, 2017

welcomejee
  • 10594 Answers

SOURCE: Lost the screws that attached to the TV stand for

Required screw part number is as follows as per service manual of Sony KDL-40S4100 model..
7-682-973-49 SCREW, +PSW 5X16
and it is available in Part Store, click the link and I think TV needs 4 screws or so.
Thanks.

Posted on Sep 15, 2009

Testimonial: "Very useful information. I will go ahead and purchase the screws. Thank You."

  • 1 Answer

SOURCE: sony bravia kdl 46s4100 no picture

it sounds like your back light might be going out. You might be able to fix this by installing a new backlight inverter board.

Posted on Aug 05, 2010

  • 1 Answer

SOURCE: Sony Bravia KDL-40S20L1 lcd tv has no power no lights nothing

My Sony Bravia LCD Model-KVL37S400A is not getting the Main Power supply. The LCD is not getting switched on. When i am trying to switch on the set nothing is happening.

Posted on Dec 24, 2010

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Thanks,
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