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#498876 - 7th Apr 2011 11:18am Help: no picture?
Wheels Offline
Wiki Veteran

Registered: 4th Jan 2005
Posts: 8795
Loc: Tranmere
Hi guys, I finnished building a PC for the bedroom so the missis can watch things Like BBC Iplayer on the TV but there's no PC (VGA) input. So I bought a VGA to component (the 3 coloured leads Red/Green/Blue) but I'm not getting a picture?

Any ideas?.

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#498925 - 7th Apr 2011 12:24pm Re: Help: no picture? [Re: Wheels]
nicky Offline
Enthusiast

Registered: 21st Feb 2010
Posts: 174
Loc: Wallasey
I had a similar problem with my PS2. I could only get it to work with the cable that had red yellow and white on. I had a scart attachment that they went in the back of and it worked fine then.

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#498926 - 7th Apr 2011 12:39pm Re: Help: no picture? [Re: Wheels]
little_pob Offline
Smartchild

Registered: 30th May 2008
Posts: 442
Loc: Upton
What TV have you got and what connections on the graphics adapter?

VGA (RGB) and component (YPbPr/YCbCr) are different colour spaces and are not compatible.

If your TV has an RGB SCART socket then, depending on the source, you might get away with one of these with the adapter you've already bought: http://www.amazon.co.uk/SCART-PLUG-PHONO...6343&sr=8-1 - at £9.50 posted it's not cheap, but the ones from the 1st page of results on ebay all appeared to be mislabeled composite or component adapters.

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#498941 - 7th Apr 2011 1:31pm Re: Help: no picture? [Re: Wheels]
Wheels Offline
Wiki Veteran

Registered: 4th Jan 2005
Posts: 8795
Loc: Tranmere
I think I may have one of then somewhere, I'll try that first. Tar smile

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#498945 - 7th Apr 2011 1:43pm Re: Help: no picture? [Re: Wheels]
derekdwc Online   content


Forum Veteran

Registered: 13th Oct 2008
Posts: 4973
Loc: Birkenhead
have a look pc to tv leads

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#498960 - 7th Apr 2011 2:14pm Re: Help: no picture? [Re: Wheels]
MattLFC Offline
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Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
That reminds me Mr Wheels, I will look for that VGA-SCART cable this afternoon!

smile

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#498984 - 7th Apr 2011 2:43pm Re: Help: no picture? [Re: Wheels]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
Right, found it in my office Wheels, drop me a PM or facebook message and you can collect it whenever mate smile

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#499001 - 7th Apr 2011 3:07pm Re: Help: no picture? [Re: Wheels]
Wheels Offline
Wiki Veteran

Registered: 4th Jan 2005
Posts: 8795
Loc: Tranmere
I know I have a few assorted but not sure were, I think I dug one out last time you wanted one matty but then you didn't need it. I'll have a quick look at home when I Finnish work then let you know. Thanks to everyone else who PM'd me with one too.

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#499018 - 7th Apr 2011 4:09pm Re: Help: no picture? [Re: Wheels]
MattLFC Offline
Wiki Master

Registered: 14th Aug 2004
Posts: 22315
Loc: Moreton/Beirut/Mobile
No worries mate smile

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#499094 - 7th Apr 2011 6:54pm Re: Help: no picture? [Re: Wheels]
Wheels Offline
Wiki Veteran

Registered: 4th Jan 2005
Posts: 8795
Loc: Tranmere


Grrrr still no picture frown it did flash up momentarily but it won't stay on?.

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#499108 - 7th Apr 2011 7:51pm Re: Help: no picture? [Re: Wheels]
diggingdeeper Offline

Wiki Guardian

Registered: 9th Jul 2008
Posts: 9798
Loc: Birkenhead
You can't use the two sound connectors on the scart to put video in.

R G & B are all colour video signals with VGA standard, none of the three colours has the Horizontal or vertical sync signals - these are separate on the VGA connector.

What are you using to change VGA to phono connectors? This "may" superimpose the sync signals onto one of the colours.

I'll try to have a look later on when I've got some time, I might have something that could help in my stock of "essential bits"
_________________________
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

When the debate is lost, slander becomes the tool of the loser. Socrates

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#499143 - 7th Apr 2011 9:29pm Re: Help: no picture? [Re: diggingdeeper]
little_pob Offline
Smartchild

Registered: 30th May 2008
Posts: 442
Loc: Upton
I had a feeling you might have an issue. As diggingdeeper points out; there is no sync. You need a VGA to RGsB lead (Gs indicates the sync is on the green signal), plus you need a SCART block that is wired for RGB - any old SCART block won't work.

If you fancy doing it yourself, the circuit to do so is here: http://www.epanorama.net/circuits/sync_r.html (usual at own risk disclaimer wink ).

Alternately, Avermedia's KeyLite (aka AVerKey Lite) will do resolutions "upto 1024x768". There is a used one on ebay for £20+p&p, or Maplin.co.uk have them new for £50 (stock code A30AU).


Edited by little_pob (7th Apr 2011 9:32pm)

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#499671 - 8th Apr 2011 8:36pm Re: Help: no picture? [Re: Wheels]
Wheels Offline
Wiki Veteran

Registered: 4th Jan 2005
Posts: 8795
Loc: Tranmere
frown I'm confused

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#499713 - 8th Apr 2011 9:39pm Re: Help: no picture? [Re: Wheels]
derekdwc Online   content


Forum Veteran

Registered: 13th Oct 2008
Posts: 4973
Loc: Birkenhead
Why don't you put pics up of your tv and pc and their connections on both
this may help for further connection solutions


Edited by derekdwc (8th Apr 2011 9:42pm)

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