Black screen w/ my sony bravia KDL-40V4100 and it will turn on, but there is no picture or sound. I was told it could be a possible issue w/ the kdl 40s4100 board, but I'm not entirely sure. I've taken it apart and it seems to 'look' fine, but its still does the same thing. 1. I've done troubleshooting w/ Sony and they're useless 2. The company I bought it form says my warranty wont cover this and to go get a phone book (literally the ***** said that) So I dont know how to solve my issue of; My black screen w/ my sony bravia KDL-40V4100 and it will turn on, but there is no picture or sound.

SOURCE: Sony Bravia TV automtaically goes on standby.

Probably the main board. This has a 1 year mfc parts and lobor warr. I would contact Sony for the nearest auth servicer. If you open it you will void the warranty.

SOURCE: i have a sony bravia model # kdl-40s4100 40 in

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

If no led light then replace the powerboard.

SOURCE: SONY BRAVIA KDL-40s4100 is not working right

Please check whether the connections are secured between the TV and the connected devices.

If the television is plugged into a power strip or surge protector, remove it from the power strip or surge protector and plug it directly into the wall outlet. If the issue is resolved, the problem is with the power strip or surge protector and not the television.

Try connecting the TV to a different wall outlet and check if that helps.

Please connect a different device to the TV and check whether the issue persists.

If the issue still persists service of the TV is determined.

SOURCE: My Bravia KDL-40S4100 lost all 3 of it's HDMI

There is a problem with the processor. The only way to resolve this issue is to replace the main board. It is called the A board in your TV.

There are two for this model and the correct one will depend on what your serial number is.

Part numbers are as follows:
part # 185709211 for Serial #
1,000,001 - 1,350,000
1,700,001 - 1,750,000
1,800,001 - 1,804,270
1,804,271 - 1,818,372
1,818,373 - 1,830,000
list price: $504.87 core charge: $680.00

part # 185709231 for all other serial numbers
list price: $505.87 core charge: $600.00

Testimonial: "Thanks, Now I wonder who all shares the same problem and if Sony is willing to do something about their defective products..."

SOURCE: I have a 42" Sony Bravia KDL-40S4100

Probable power supply