No Pc signal when connect PC to Sony Bravia TV with VGB cord

SOURCE: no picture when vga cable is connected

Most tvs can only handle a couple resolutions (ie 640x480) through the pc input. Even some HD tvs can only do 480. Check that your video is turned on and setup to the acceptable resolutions.

right click your desktop
go to properties
click settings tab
click on the 2nd monitor
make sure the box is clicked at the bottom
"extend my windows desktop onto this monitor"

instructions for windows xp

SOURCE: No signal when connecting PC to TV

This happens to almost every laptop I know. Here are several solutions:
1. You need to manually enable video on tv by pressing two buttons on your laptop keyboard. The first is "Fn" (at the left bottom). The second depends on your laptop manufacturer. Look at the function keys. F1....F12 for the LCD/CRT or the corresponding sign. Press and hold Fn and press second button. Sometimes you need to press second button several times. This means you need to cycle through all available options to enable Laptop's screen and TV screen at the same time (clone).
2. Intel Extreme Graphics video cards sometimes doesn't support a procedure described above. You need to find intel video card options manager running at the sys-tray (right bottom of your screen near the clock). Right click on it. Select Graphic Options -> Output to -> Laptop + ... clone (or something similar)
Note that not all video cards are capable of showing the movie on media player at the same time. You need to choose Laptop or TV

SOURCE: no signal sony bravia to dell laptop

Most laptops have a combination of buttons you have to press on the keyboard to get it to output on the monitor output. Try pressing the FUNCTION KEY or FUNC/FN key usually found in the bottom left hand side of the keyboard. Keep that button held down while press one of the number keys. Usually the number key will have a picture of a TV screen on it. Might be number 8 or 9. Press both keys at the same time a you can switch between laptop screen, Sony LCD or you can have both..

SOURCE: LG 32LG30 no signal when pc and tv r connected via rgb cord

For No signal try- Updating your Video drivers, and making sure it shows a connection on your laptop ( by going to propertys on desktop and then dysplay)
For format try- Updating and or turning down the screen resulotion becuase the size differs on screen even if you think it shouldnt.

SOURCE: sony bravia kdl 46s4100 no picture

it sounds like your back light might be going out. You might be able to fix this by installing a new backlight inverter board.