Question about LG 42PX4DV 42 in. EDTV-Ready Plasma Television

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Lg 42PX4dv PC connection

Hi, I just connected my PC to the Plasma with a 10M cable 15pin VGA D15 made by concord. Part no WQ7258 when I boot the Pc the signal is picked by the plasma and the screen appears on the RG input screen. After about 30 seconds or so the signal is lost then it comes back on for a few seconds showing the window bar as the PC boots up then the signal is lost again and the plasma displays NO SIGNAL ON THE SCREEN. Is there anything I can do to keep the signal displayed? The cable is brand new. Regards DarrellB

Posted by Darrell Buttigieg on

  • Darrell Buttigieg May 20, 2007

    thanks for that, I will look at buying such a cable soon!

  • Jure Nov 06, 2007

    I have LG 50PC55 50 inch plasma, and when I conect it via 15pin D-sub cable to my computer, the TV can not find any signal. Computer recognizes TV's chipset, screen resolutions and refresh rates, but TV does not find any signal from computer. If I conect the same computer with the same setings to eg. Sony or Philips LCD or plasma TV, it immediately gets the signal and shows picture. Is there any seting in TV's service menu where I can activate VGA input?



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andrew pester

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I think the problem is the screen resolution and size of your pc is not matching the resolution size of your tv or is not compatable at the size you have it on or you may have to change to 4:3 ratio from widescreen. In your manual it will tell you the resolution sizes that you tv uses. You would probably be better also using the VGA to DVI lead, thats if it came with the tv (it does in the UK) as it supports higher wide screen resolution, whereas VGA will only support 1024 x 768 or there abouts.

Posted on May 19, 2007


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How do I connect my laptop to my TV?

If your TV has a 15pin DSub VGA port then you can connect the 15pin DSub video port from the laptop to the TV with a VGA video cable.
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A Video Graphics Array (VGA) connector is a three-row 15-pin DE-15 connector. The 15-pin VGA connector is found on many video cards, computer monitors, and some high definition television sets. On laptop computers or other small devices, a mini-VGA port is sometimes used in place of the full-sized VGA connector.
DE-15 is also conventionally called RGB connector, D-sub 15, mini sub D15, mini D15, DB-15, HDB-15, HD-15 or HD15 (High Density, to distinguish it from the older and less flexible DE-9 connector used on older VGA cards, which has the same shell size but only two rows of pins).
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As far As I can remember, most TV design to receive the signal to watch whatever you want limited to available TV station in your local broadcaster.
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Best Regards,

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Connect a different monitor to the VGA-output port on your computer, to see if that monitor works.

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How to connect samsung pasma tv to pc?model number is PS42B450B1XUM


That does depend on the PC, but I'll assume it's a pretty standard PC.

You ideally need a Male 15Pin VGA cable to Male 15Pin VGA cable. (aka A normal Monitor Cable) The same as you probably have connected between your PC and Monitor.

Your TV has a 15Pin VGA Female socket on the back, this cable plugs into here.

For Sound the TV has what looks like a headphone socket next to the VGA Plug. You need to use a Stereo Jack Plug to Stereo Jack Plug Cable. 3.5mm. This goes from your PC's Audio Line Out (rear of the PC) to the Plug on the rear of the TV. It is usually marked Aux In or PC Sound.

Enjoy, The PC will look great on the Tv.

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With the indulgence of IB4G2008...

Not possible without a converter adapter at the same time signal losses, interference and noisy video if CAT5E cable used.

What I would suggest is to use coaxial cable (RG59) instead of the CAT5E. One end would be terminated with ta BNC male to connect to the camera. The other end would have to be terminated either with an RCA male. Before connecting to the VGA (15pin) input of the monitor, it would have to be processed by a converter/adapter. Here are some examples:
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3. several shown here would also work.

In case you would like a DIY, this might interest you.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards.

Thank you for using FixYa.

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Out of range

NO PC stated nor OS is it windows what or linux what or O/S2?
10meter . is way too long. sorry. never do that ....
10m means that. why say 10m?
lead = cable. VGA cable. it is.
VGA will not run 10meters ever, and look ok, (i do know how)

out of range means the PC is using ******* resolutions settings
on this old monitor. see list of legal resolutions below.

the answer is simple.. (NOT REALLY WITH NO PC OR OS STATED)
in your unstated PC and OS (windows)
we do what, (im blind cant see what you own)
if HP PC is get the correct driver from my PC, (GPU/VGA)
then it works.
if this pc is over 10 years old (last year made not first)
then there is no HP support.
if running XP or Vista, then Plug in play is not going to work on the dead. (MS shut this down)
so i run my scan program (pci dev maker scanner)
omg i see the video chip now, and its a XXXX
(geforce 123)
i got to nVidia and get it and it loads and works (ask how)
then in the nvidia driver i set the default resolution to
any of the BOLD max resolution's.
learn to that using a new PC using and old model
the New PC with NEW OS does not recognize this old model
its too old. now. so we must force it, in WINDOWs.
you must force your unstated video chop to the below resolutions
ranges. pick one and set it. there.
if running XP or Vista ,both are dead do PNP plug and play is dead, now. in most cases F8 safe boot , set it to say
1024x768 works then you reboot and it stays there.
but not if the driver for you VGA chip is missing or wrong.
means get it and load it now. in safe mode F8
is this pc connected to the internet as it must?

832 x 624 / 75 Hz
640 x 480 / 75 Hz
640 x 480 / 73 Hz
640 x 480 / 60 Hz
800 x 600 / 75 Hz
800 x 600 / 72 Hz
800 x 600 / 60 Hz
800 x 600 / 56 Hz
1024 x 768 / 75 Hz
1024 x 768 / 70 Hz
1024 x 768 / 60 Hz

1024 x 768 / 85 Hz
640 x 350 / 70 Hz
720 x 400 / 70 Hz

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