I would like to use my LCD viewsonic monitor as my cable tv display.
I have a vga cable connected to the composite (yellow) cable into the cable box.
I thought this should work.
Any ideas on how I should do this?
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Yes you can, if you has PC desktop, plug your lcd to it. change LCD resolution from your PC. -- Right Click on desktop -- Click properties >> click settings tab -- You will see Screen Resolution, change to the lowest (800x600) -- Nnplug VGA cable from PC -- Now plug the cable tou your TV Tuner.
Connect your TV to the computer with an S-Video cable. Turn the TV on and choose the AV option (of your TV) to S-Video. It will tell you that there is no signal on the TV.Press the Fn key on the keyboard. While keeping that key pressed, press the F5 key. A small rectangle appears on the screen showing different connection possibilities (LCD, LCD +TV, LCD+CRT, TV only, CRT only). You can cycle through the options by pressing F5 repeatedly. You select the output option (TV + LCD).Release the keys . You will then have your two screens.
Note: I assumed you connect the TV through the S-Video. If your TV can be used as a monitor (it has a VGA adaptor), then with the F5 key select option LCD and CRT
You can't connect a standard TV to a computer using a VGA cable. If you have it, use the composite (yellow) RCA jack or S-Video from your laptop. As for turning off a laptop monitor, look on the function keys for LCD/CRT or icon for monitor (typically 3, 5, 7, or 8) hold down FN key and press the correct function key.
Set the TV input to PC (that's ViewSonic's term for the VGA port).
Setting the computer to output to the PC may depend on your OS (XP, Vista). Reboot the computer after connecting the monitor and see if new hardware is found. Reboot again if you have a flickering screen. In Vista, right clicking on the desktop brings up various video and desktop options. Choose Screen Resolution and look for the multiple monitors line. Click Apply and OK after setting your desired output. In the Screen Resolution window you should see two monitor boxes (labeled 1 and 2) if the computer sees the monitor.
If the second monitor is not showing up (no new hardware found), check your BIOS and device drivers to see if you need to enable or update the drivers for the VGA port. Check your manual for the BIOS (often it is click F1 or F2 before the OS loads; it's often tricky timing and I have to try repeatedly). Device manager will have a red x if the port is disabled; the exclamation point (yellow triangle) indicates driver issues.
I realize this is nearly a year after you posted your questions but I hope it will help the next person searching for answers on this TV.
Have you tried another monitor on the VGA output? If that still doesnt work may need to set up in CONTROL PANEL>DISPLAY>SETTINGS>DISPLAY- should show another monitor fool around with that and see if you can get it to work, if so then try your tv, But ive never seen a tv with a VGA input? Maybe its me? Good luck JLS