Sony TV XBR43X800E has a Black Screen?

I'm sorry to hear that you are having issues with your Sony Bravia TV. It sounds like you have already tried a number of troubleshooting steps, including replacing the boards and performing a software update. If you have no picture on the TV and the Sony logo is flashing on the screen before going off, it could be an issue with the software on the TV. Here are a few additional troubleshooting steps you can try:

1. Disconnect the power cord from the back of the TV, then unplug the TV from the wall outlet. Leave it unplugged for at least 60 seconds, then plug it back in and try turning it on again.
2. Check the HDMI connections on the back of the TV to make sure they are secure.
3. If you are using an HDMI cable to connect the TV to a device (such as a cable box or DVD player), try using a different HDMI cable.
4. If you are using a cable box or satellite receiver, try resetting it by unplugging it from the power outlet for 60 seconds and then plugging it back in.
5. If the TV is still not turning on or the picture is not coming back, it could be an issue with the software on the TV. In this case, you may need to try a factory reset. To perform a factory reset, follow these steps:

• Press the Home button on the remote.
• Select Settings.
• Select Product Support.
• Select Customer Support.
• Select Factory Reset.
• Follow the on-screen instructions to complete the factory reset.

Keep in mind that a factory reset will delete all of the data and settings on the TV, so you will need to set it up again as if it were a new TV. I hope these steps help, and please don't hesitate to ask if you have any further questions.

Hi,

Please use your remote to turn up the brightness on the screen as someone might have accidentally turned it down.

or you can use your tv support page/download page to check for updates on your tv. Please use your manual to find the specific reference for how to make updates to your tv. If that does not work, then you will need to perform a factory reset on your tv.

Thank you.

It happens all the time. Have a read, best advice here

https://www.fixya.com/support/r29790007-repairing_own_television

..

Hello
in this case ld board is defective please replace ld board .
thanks
M Nasir

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.
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.

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://electronicshelponline.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.

xbr 65x 850b sony ultra 4k tv smart ... what cause it to be black screen but you can hear the show playing

Let me know exact model of your TV and do you see any label on subject port that you want to turn ON, how it looks like?

just need to balance the three colors red,green and blue that may help remove the front covers and look for black module that have sccree and focus controls just move a little bet left or right be carefull because you can loos the picture e-mail me for more info

posible solution is adjust the screen to low.also check the trimer if it is working.check the resistor in the heater line...weng