20 Most Recent Sony Bravia KDL-40S4100 40 in. LCD TV - Page 5 Questions & Answers

The A board will need replacement all audio processing is done on the A board. Your model used two different A boards but the people at www.tvcircuitboards.com can assist with determining which board you require if you send them a email from their website.

Sony Bravia... | Answered on Jan 26, 2012

probably the timer is on..

Sony Bravia... | Answered on Jan 11, 2012

If you have the led light on, then you need to replace the mainboard.

If no led light then replace the powerboard.

Sony Bravia... | Answered on Dec 31, 2011

The Blinking red light. suggests logical errors detected b the main board. e.g TMDS/LVDS cable being faulty. Inverter not responding etc. the cable will be the likely culprit.

Sony Bravia... | Answered on Dec 25, 2011

I have the same problem .took tv to a sony authorize service center for a diagnose and the result was a badmain PCB board .part price $504.87 + labor total around $705. call sony and they said "sorry out of warranty"

Sony Bravia... | Answered on Dec 05, 2011

Main PCB is bad . I just got the information from a Sony authorize servicer price for the part only $504.87

Sony Bravia... | Answered on Dec 05, 2011

If all other modes are fine, you have a problem with the A/V input board or the mainboard.

Sony Bravia... | Answered on Sep 24, 2011

if it is a black block, look in the menu under closed captions and see if it is in the text mode. if so change back to cc1 or turn off.

Sony Bravia... | Answered on Aug 19, 2011

It can be bad connection on the ribbon cables between the LCD panel and the T-CON board, bad T-CON board.
You can try reseating the ribbon cables first, very delicate works so be real carefull.
Examples: http://s807.photobucket.com/albums/yy352/budm/LCD%20panel/
Failed SONY: http://s807.photobucket.com/albums/yy352/budm/SONY/
Download and read more about T-CON/LCD panel troubleshooting:
T-CON: E40951307-TCON Troubleshooting 10-22-09_OPT

Basic LCD monitor and TV troubleshooting guide:
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Parts: www.interliquidparts.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Sony Bravia... | Answered on Aug 11, 2011

You need to see if you are getting at least the 5v standby voltage (it will always be there with the set on or off), if you do have the 5v, then need to find out if the main board is sending to on command to turn on the main section of the power supply.

Sony Bravia... | Answered on Jul 25, 2011

If the screen is damaged, the panel needs to be replaced. Unfortunatly most are not available and the cost of the panel far exceeds the replacement value of the TV. Sorry to be the bearer of bad news : (

Sony Bravia... | Answered on Jul 25, 2011

This is another Sony KDL 40S4100
is only recieve NTSC signal, is there is any firmware or anyway that I can make it recieve PAL signal???
Anybody out there?

Sony Bravia... | Answered on Jul 17, 2011

Look for one on EBay under Electronics TV/Parts
Mats Electronis 1-800-628-1118
MCM Parts 1-800-543-4330

Sony Bravia... | Answered on Jun 29, 2011

Look on EBay under Electronics/TV Parts
Encompass Parts Distribution 1-800-638-3328

Sony Bravia... | Answered on Jun 29, 2011

First try to check the battery or replace it. Then try to check the battery terminals the one that is connected in the pcb it might be loosed. Then try to check the sensor of your remote if good, in checking a sensor without using a tester you should have a cellphone with a camera, point the sensor in the camera lens then look at the monitor of your cellphone, if there is a red light that glows it is good, if no light glows try to replace it.

Sony Bravia... | Answered on Jun 02, 2011

Not finding what you are looking for?
Sony Bravia KDL-40S4100 40 in. LCD TV Logo

224 questions posted

Ask a Question

Usually answered in minutes!

Top Sony Televison & Video Experts

The Knight
The Knight

Level 3 Expert

76204 Answers

Jerry Greenberg
Jerry Greenberg

Level 3 Expert

1691 Answers


Level 3 Expert

13434 Answers

Are you a Sony Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular


  • BRAVIA Sony

Most Popular Question

sony bravia 5 blinks

  • Televison & Video