I have a odd problem connecting my laptop to my LCD TV via VGA cable. Short cable vs. long cable? A little help please.

Asfaltangl · Jan 24, 2014

I have an Acer Aspire currently connected to my LCD TV via a 5' VGA cable and it works great, but is getting seriously uncomfortable. I got a new, unbranded (but same as shorter one) 15' VGA cable. The cable works fine between my laptop & a smaller LCD monitor (as does the shorter cable) but when I connect it to the tv it comes up with a message that the tv doesn't support the resolution or refresh rate (it does this about the point where my desktop is loading). I do not have this problem with the shorter cord. Same tv, same laptop, same settings. Can someone please help? I am computer literate but not so tech saavy and just want to be able to sit comfortably a little further away. Thanks!

Asfaltangl · Jan 25, 2014

Thank you John. I checked out both sites & came away with more questions.

I didn't find any "branded" cables listed anywhere. Does 'branded' mean something different with electronics than other things? I take "branded" to mean something not generic, something that the manufacturer has "branded" with their name. Is this wrong? If not, what brand names should I be looking for?

Asfaltangl · Feb 15, 2014

Thank you John! I will check it out.

Prijector · Oct 10, 2014

Asfaltangl :

I have an Acer Aspire currently connected to my LCD TV via a 5' VGA cable and it works great, but is getting seriously uncomfortable. I got a new, unbranded (but same as shorter one) 15' VGA cable. The cable works fine between my laptop & a smaller LCD monitor (as does the shorter cable) but when I connect it to the tv it comes up with a message that the tv doesn't support the resolution or refresh rate (it does this about the point where my desktop is loading). I do not have this problem with the shorter cord. Same tv, same laptop, same settings. Can someone please help? I am computer literate but not so tech saavy and just want to be able to sit comfortably a little further away. Thanks!

Prijector · Oct 10, 2014

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mctylr · Oct 12, 2014

Asfaltangl :

The longer VGA cables (brand-name or not) will subject the video signal to more interference and higher signal loss. I believe the recommended maximum length of a VGA cable without an signal amplifier or repeater is 10 meters (~30 feet), but longer cables have reduced bandwidth meaning you end up trading the increase in length for reduced possible resolution. So if you need the longer cable try lower resolutions, such as 1024x768 or even 800x600.

If the cable was really cheap, then perhaps it was poorly made, in particular with little shielding (screening) against interference, and possibly overly thin wires which mess up the impedance causing increased signal lost.

In general, but likely not applicable in your situation, is it is strongly preferred to use a digital signal like DVI or HDMI for long cable runs rather than an analog video signal such as VGA.

Check monoprice.com as one source for a wide selection of video cables and adapters at reasonable prices. (No affiliation)

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I have a odd problem connecting my laptop to my LCD TV via VGA cable. Short cable vs. long cable? A little help please.

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