Will a long run of VGA cable and/or using a splitter damage VGA card?
October 17, 2013 6:07 AM Subscribe
We've cooked a video card that was 1) supposed to be at least somewhat high end and 2) was hooked up to a VGA splitter, with one leg going 100' to a monitor. Coincidence, or did we overload/cook the video card?
posted by randomkeystrike to computers & internet (10 answers total)
Disclaimer: I am not the lead decision-maker on how this system was put together. I'm sparing the editorial comments as much as necessary, because in several ways I'd have done this differently.
What have we got? It's a PC with low-end "gaming" video card which has VGA, DVI, and HDMI outputs. I think it was made by NVIDIA; regardless it's a name-brand card we paid about $70 for at Best Buy, not a bargain-basement card. We've put a fairly heavy duty power supply in the PC (500+ Watts). Otherwise, PC is nothing special. Running Win 7.
PC is in back of building.
HDMI cable makes about a 100' run to projector mounted overhead in auditorium.
VGA goes to splitter; one side goes to monitor which is right by PC; other makes 100' VGA cable run to pulpit for second (duplicate) monitor so minister can see Powerpoint presentation mode while audience sees presentation on projector. Display on pulpit monitor is a little fuzzy and a slight scan line "ghost" has been seen sometimes, but it's passable for the purpose intended.
So what's the problem? We'd been running in this mode for about a year when one PC set up this way had the video card die. A replacement video card wouldn't work; we decided (whether accurately or not I don't know) that the power supply didn't have enough power for the card, and the power supply couldn't be upgraded in the PC we had, so we bought another PC with a more standard case and heavier power supply. We had several driver problems with the video card, so we replaced it with the Best Buy aftermarket one.
It died in about 3 months (no VGA output; HDMI still worked), and I've replaced it with a similar aftermarket video card.
Obvious implication is something's happening to the VGA cards. To confirm what seems almost obvious - would a long run of VGA and/or using a splitter add an electrical load to the card that would cause it to have an extremely shortened life?