using a tv as a monitor problems

March 16, 2011 at 15:07:29
Specs: Windows XP
I am trying to use a Selectronic LDX-2480 as a dedicated monitor for my PC but no matter what I try I only get a blue screen and a no signal message. I have changed the resolution a couple of times but nothing works. Any ideas?

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March 16, 2011 at 17:06:06
Turn off pc and TV. Then turn on PC and then try to get TV to work.

TV's and PC's are different signals. One of the two has to be able to work with the other. Either PC has to have tv out or tv has to have pc input ability. Does either have it?

"The era of big government is over," said Clinton 1996

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March 17, 2011 at 15:02:55
thanks for the quick response. Yes the TV has a vga port that connects directly to the PC. I tried your suggestion but still get the same infuriating blue screen with no signal notice.

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March 17, 2011 at 20:35:05
You must select the right video input on the TV.

You will get the best result from a VGA, DVI, or HDMI connection.

XP enables only one display by default.

The cable between the computer's video and the TV must be connected.

RIGHT click on a blank part of your desktop screen select Properties, then Settings.

Hold your cursor over the right display icon - number 2 - it probably says "Not Active".
RIGHT click on that display - select Attached.
Click on OK at the bottom of the Display Properties window to make the setting "stick".

Windows will retain the second display being enabled as long as the cable to the TV is still connected while Windows is running, but if you boot the computer with it disconnected at least once, you will have to enable the second display again when you do have the cable connected.

In addition....

Some laptops will display on an external monitor without you having to do anything.

If you get no video on an external monitor, some laptops have a key combo that you must press to toggle the display to external video only / built in display video only / sometimes both - see the Owner's or User's manual for the model.

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March 18, 2011 at 15:02:10
Thanks. The problem that I have is that it is a CPU not a laptop and if I hook up the TV in place of the existing monitor the blank screen does not allow me to utilize the CPU to correct it as the image does not exist. If I carry out the process that you mentioned using the old monitor and then disconnect it and connect the TV will it then work? Any assistance greatly appreciated as I am not much of a computer guy.

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March 18, 2011 at 15:34:11
Have you made sure you have the TV controll set to VGA INPUT? Was not able to find a user manual for your TV online but if it is a digital LCD unit it most likely has a button on the remote control for "Source".

Make sure you have selected VGA or Computer.

The other thing you can try is to find out what the TV native resolution is and change your PC desktop setting to this while connected to your old monitor. Then shut down and connect to TV. Boot up and see if you can now get an image.

Goin' Fishin' (Some day)

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March 18, 2011 at 16:36:12
The term CPU is frequently mis-used. The computer case most of your desktop components are inside of IS NOT A CPU ! It's just a computer case !

The CPU = Central Processing Unit = Processor = Microprocessor
is the most complicated and often the physically largest integrated chip on the motherboard inside the computer case, without which the computer cannot work.

If you're connecting the video output from your computer video adapter only to the TV, the only things that can cause your problem are

- you don't have the video source selected correctly on the TV

- you don't have the cable between the video adapter and the TV connected to the right ports - e.g. if your computer has both one or two monitor port(s) for onboard video and one or two video port(s) on a video card in a slot space, usually the port or ports for onboard video cannot produce video when a video card is installed in a PCI-E X16 or AGP slot on the mboard.

- you are trying to use an DVI male to VGA female adapter to convert a DVI port connection on the video adapter to a VGA connection on the TV and the DVI port on the video adapter cannot support that - it must be a DVI-I port - in some cases a DVI port for onboard video - video built into the mboard - is NOT a DVI-I port

- (not likely) you are using the wrong type of DVI male to VGA female adapter to convert a DVI-I port connection on the video adapter to a VGA connection on the TV

- you are trying to use a DVI female to VGA male adapter to convert a VGA port connection on the video adapter to connect to a DVI port on the TV. There is no such thing as an adapter that can do that - there are not enough connections in the VGA port on the video adapter for that to work.

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