I have an LG tv, and an HDM1 cable. I used to be able to plug my Dell laptop into the TV just fine, but now it has stopped working. I can plug my Laptop into a different TV, so the problem has to be with the TV not the computer. Please let me know anything I could do to solve this problem.
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Below is a link which takes you to a page that shows how to cable the PC (laptop) and the TV together, with a brief explanation of resolutions etc. http://www.lg.com/uk/support/product-help/CT00008333-CT00008334-2132861
If the above doesn't get you any further then the link below takes you to an LG support page from which you can download the full manual for your TV, which gives the supported connection methods and the supported resolutions. http://www.lg.com/uk/support-product/lg-32LC45#
I would strongly suspect that if correctly cabled then either the laptop external resolution is set to a level that the TV can't cope with, or the external monitor function is turned off. If the external monitor function is turned off then pressing and holding the Fn button whilst pressing a function button once and releasing both should turn the external monitor on. On a Toshiba Tecra the top line functon button you need is F5, on an MSI U130 its F3, on a Dell Inspiron 1525 its F8, on a different Dell model its F1, so you need to check your laptop and its manual to find out which button is relevant to your machine.
Sorry to have been longwinded - Good luck
Decide if you want to watch the television on your computer
or use the TV as a larger monitor. If you want to view the contents of
the TV on your laptop, you need a video card connected to to the
computer. These cards can either be inserted through the express PCI
card slot on the laptop, or via USB cable. Make sure the video tuner
card supports component video.
Connect the DVI-to-component cable into the DVI port if you
want to use the TV as a large monitor for your laptop. However, if you
have a VGA port, plug the VGA-to-component cable into the VGA port.
Plug the RGB component cables into the component side of the
DVI- or VGA-to-component cable. If you want to watch the TV on your
computer, insert the RGB cables into the TV video card.
Plug the other end of the RGB component cables into the TV.
If you are using the TV as a monitor, plug the cables into the
"Component In" ports. However, if you are sending the TV signal to the
computer, plug the cables into the "Component Out" port (the other end
of the DVI- or VGA-to-component cable that you connected to your
computer in Step 2).
Power on the TV. If you are using the TV as a computer
monitor, press the "Video" button until "Component Video" appears on the
screen. If you are watching TV on your computer, launch the television
viewing software that came with the TV tuner card. You can now see the
contents of the TV on your computer.
make sure your pc is powered completely off(not a restart but a shutdown). hdmi cable should be unplugged. plug cable to tv first, then turn on tv. Now power up pc and it should recognize the tv. Use projector mode if available on your pc. do not unplug hdmi cable while pc is on or you may have to repeat process.
You may need to use the S-video cable for video. Make sure video mirroring is disabled on the powerbook. Also, make the external monitor the primary display by dragging the menu bar to it in Displays preferences (Mac OS X) or the Monitors control panel (Mac OS 8 and 9).