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index » General » General Discussion » VGA cable problem - Pins not tied to ground
datamessage
2007-12-25 10:51:09
Sebi
Simple User
Simple User
Sebi

I mean: the long cable not a high quality one. Maybe some wires not shielded, or more wires have common shielding.
The ID pins grounded (i think) in the projector side, and when You connected the longer cable, it have a pretty big earth-loop.

<2007-12-25 10:51:51 | modified by: Sebi>
2007-08-07 17:51:50
Cut-Throat
Simple User
Simple User
Cut-Throat

I have an Optoma EP719 DLP Projector that came with a 6 foot VGA cable. When I hook my Sony Laptop up to my TV with the VGA cable that came with the Optoma Projector, it works perfectly and I can use my LCD TV as a PC Monitor. I bought a 25 foot VGA cable, but it does not work by itself as the TV fails to recognize my Laptop. However if I use the Optoma VGA cable and connect the 25 foot cable to it with a VGA coupler, it will work. Some trouble shooting by an electronics company here, noted that my DLP projector VGA cable has some of its pins tied to ground, while the 25 foot cable's pins do not tie to ground at all. They are wired one to one. My question is; Has anyone heard of this problem and know of an adapter that will correct this?

BTW - Hardly anyone has heard of this problem and the pins are definitely wired different on these two cables. I can take a Multimeter on the pins of the DLP VGA cable and touch them to the metal case and there is a dead short, not so with most VGA cables. Also, if I use the DLP's VGA cable to detect the laptop from the TV and then replace the entire cable with the the 25 foot cable it will work perfectly. However if I change source, such as a DVD player, it will not recognize the laptop as being connected and will 'search by it'.

<2007-08-08 00:19:44 | modified by: Cut-Throat>
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