20 Most Recent Sony BRAVIA KLV-40U100M 40 in. HD-Ready LCD Television - Page 7 Questions & Answers

https://www.youtube.com/watch?v=HeGBaPnzzmo

Aron, To perform a reset you will need to disconnect the TV completely from power for at least 30 seconds, if this doesn't resolve your problem then you may have hardware that has expired in your device. Without physically looking at your device I can't say with certainty what your problem is, it could be your PCB. There are video's online you can visit on how to test a PCB for faults. If you are not comfortable troubleshooting your device I would suggest contacting a local electronic repair shop near you, however I will link you to a generic instructional video showing you how to perform basic troubleshooting of your device. Hope this helps, Best regards https://www.youtube.com/watch?v=qxG3hmmvkJs Testing LCD TV Power Supply BoardsSTEP BY STEP

Although I am just guessing, most Sony equipment uses metric screws. Go to a Home Depot or similar store and take the piece that you have that contains the threaded fittings and they will help you find the screws you need. https://www.manualslib.com/manual/793567/Sony-Kdl-32xbr6.html?page=7#manual This page of the manual gives some info about the screws such as not longer than 1/2" (or 12mm) to prevent damage to the set. Sony customer service may be able to supply replacement screws too.

Unplug from wall for 60 secounds then plug back in. See if that works.

Press the HOME button on the remote control. Select Settings. Select System Settings. Select Customer Support. Select Factory Settings. Select OK.

See if remote has a ratio or zoom button on it.

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. 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.

Main system control memory IC fault. This is a very small IC; have 8 solder terminals, and can be located very near to the main system control-chroma IC. Check and replace it. Be sure to replace it with the same number printed on it; in all respect. Otherwise, it won't go. http://electronicshelponline.blogspot.com/ Before replacing it, try a reset to this set, and then check. 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; check the site linked here.

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. 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.

Depending on the type of TV, the longevity can be affected significantly. If your TV is a plasma model, they run very hot and the plasma only lasts about 4-5 years. That is why plasma is no longer being made by any of the major manufacturers. It was state of the art when it came out, but now LED TVs are the standard. They use much less energy, run a lot cooler and last much longer. Longevity really depends upon the technology used, not always who made it.

Replace HDMI cable first, then check whether your box works on HDMI out. Try connecting box using other out (USB, VGA, DVI, DP, cable)