#1436284 - 12/07/08 11:36 AM
Video monitors grounding out thru signal?
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Big Frost
SD Gimp
Registered: 07/06/08
Posts: 97
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Hi guys,
Ive recently hooked up three headrest monitors (not mounted yet) to my head unit thru a video signal splitter, and found that video signal im sending the monitors is actually grounding them...is this normal?
I hooked up positive, then negative to all monitor's, then the signal, and they were working, but i accidentally pulled the negative cable loose, and it disconnected all monitors, but they remained on... and only turned off when i disconnected the video signal, and turned back on upon reconnecting it.
I dont mind if this happens, as they are all turned on and off via a switch hooked to positive, but i just want to make sure its not damaging to my equipment...
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#1436483 - 12/07/08 10:18 PM
Re: Video monitors grounding out thru signal?
[Re: Knobhead]
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Big Frost
SD Gimp
Registered: 07/06/08
Posts: 97
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I did notice that all three of them were fuzzy, but actually thought it may have been my brand choice...but now that i think about it i do remember the resolution clearing up a few times...
The dash monitor is mounted, and set and everything, but its still grounding thru the video leads...if i have its proper ground connected, will it use that instead of the video leads? is there some way to tell?
Edited by Big Frost (12/07/08 10:20 PM)
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#1436492 - 12/07/08 10:35 PM
Re: Video monitors grounding out thru signal?
[Re: Big Frost]
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Armoredhaulin'
SD Ralph Wiggum
Registered: 07/06/08
Posts: 52
Loc: Massachusetts
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Try connecting them 1 at a time without the splitter. Maybe the splitter is bad.
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#1436506 - 12/07/08 11:10 PM
Re: Video monitors grounding out thru signal?
[Re: Big Frost]
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Knobhead
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Registered: 18/02/06
Posts: 165
Loc: Near There
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I did notice that all three of them were fuzzy, but actually thought it may have been my brand choice...but now that i think about it i do remember the resolution clearing up a few times...
The dash monitor is mounted, and set and everything, but its still grounding thru the video leads...if i have its proper ground connected, will it use that instead of the video leads? is there some way to tell?
I figure the picture would look fuzzy. You saw lines across the image? That's a ground noise. Just like a buzz in speakers. In video it appears as lines on the image.
Like I said, properly ground them and they "noise" on the screen should go away. Make sure the ground is secure, it can damage the system if not.
_________________________
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CDT CL-61 comp w/ IEK
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#1437630 - 14/07/08 11:16 AM
Re: Video monitors grounding out thru signal?
[Re: Knobhead]
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SuperJay
I made this!!
SD OG Playa
Registered: 30/08/07
Posts: 21214
Loc: SoCal
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perfectly normal. all grounds are the same potential (in most systems) and should be that way. Now, the question remains, is it healthy for your system? probably not. I wouldn't count on the video neg at a good ground.
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more fun than a well oiled midget The best argument against democracy is a five-minute conversation with the average voter." - Winston Churchill i say somethin' stupid everyday, nothin' new  - Flattop 
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