Top 20 Sony Bravia KDL-40W4100 40 in. LCD HDTV Questions & Answers

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://electro-medical.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...

The problem is most likely a failing electrolytic capacitor in the convergence section of the circuitry. It may not be economically repairable. You can (after unplugging the set) take a good look at all the electrolytic capacitors hunting for signs --crud on the ends, bulging, burning, etc.

Firmware corrupted. Contact the authorized service center. Gopakumar Gopalan Google

Before you do the auto search for the programmes please try to do the factory re set from set up menu. hope your problem will be solved.

At first, check if battery contacts inside the battery compartment for any dust of rust accumulated. Clean them well, and insert fresh batteries and check. Check its infrared emission. You can check it by using a cellphone with camera option. If there is no infrared emission, you have to check its infrared LED at the front of the remote control for damage or loose solder terminals. For this, you have to open the remote control. If you wish to get more details about how to check and clean a remote control, visit this site. It has a post, that describes how to clean a remote control. Good luck.

Check this link.

sounds like a bad main or digital board--you under warranty with this unit?

what is being used for signal and how are you connected for that?

Look first to see if same issue on all inputs to set---does it do this with a DVD etc hooked to a rear input or not?

Ok after over a year i figured out it was the tcon board. Good luck getting finding one. The first one i ordered from shopjimmy was faulty, didn't realize until after the warranty so i ate the cost of it (honestly i thought that it was good and there was another thing wrong with the tv) so i said wtf and bought one last week from ebay. Bam! it works great!!!

These trouble is commonly caused by a rusty or dirty switch. It is easily to determine what switch, try to check the power switch or replace a new one. When replacing a switch open the back cover of your tv, try to locate the power switch by looking for the power button, It is connected in a small pcb together with the volume and channel button it is separated to the main pcb connected with a wire.

BAD CAPACITORS ON THE POWER SUPPLY... YOU CAN GET ANOTHER AT TVPARTSANDMANUALS.COM

Hello
you can put any sony tv code. it will work on your tv as well.
Good Luck

if the video looks like it is dark on the one side and you can see image retention(ghost image of previous image after picture changes) and all inputs and menus are distorted then you most likely have an LCD panel failure and when it comes to repair unless you were able to get warranty coverage the repair would not be economical due to the cost of the LCD panel. i suggest contacting sony customer support for possible repair accomodation 1(800)222-7669

That is more likely to be caused by bad T-CON board or bad connection between the LCD panel and the T-CON board ribbon cable connections. I would try reseating the ribbon cables between the T-CON and LCD panel first, you may even have to use contacts cleaner to clean the contacts.
Otherwise the T-CON may have to be replaced.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on: Basic LCD monitor and TV troubleshooting guide: http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting http://www.fixya.com/support/r7406380-tv_training_manuals Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague Parts: www.shopjimmy.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. Please post back what you find. Please leave rating if it helps. Can you also post the pictures?

You can search eBay. They sometime show up there. If you know the part number that can help also. Look for stand.
You can also look at shopjimmy.com

I have the same tv model KDL-40W4100 and around the same age. At the moment I have 16 of
these horizontal lines over the entire screen and they seem to be grouped into 2 lines per row. They are also around 4 inches and two pixel rows high. I have been looking over the Internet for months and found nothing to troubleshooting this issues. In the last few weeks more and more of these groups of lines have been showing up and now i am up to 16 of them and it is becoming unwatchable. Any help from anyone would be greatly appreciated. I also attached a picture to describe it better. Thanks!

My KDL-52W4100 just started doing the same thing. It blurs down the right side of the screen, then goes back to normal after it warms up. Does anyone know whats up with this?

Hi,

You can download the complete instruction manual in PDF format by clicking this link.

• You'll require Adobe PDF Reader installed on your computer to view the manual. If it is not already installed on your computer, download it free from: http://get.adobe.com/reader/

Hope this solves your problem. Thanks for using FixYa.