Scart switching

On Sun, 23 Dec 2007, colinstone RemoveThis @hotmail.com wrote:

> Just plugged in a Sony HDD/DVD Freeview machine into an analogue TV
> using a fully wired scart cable. Sony is on Channel 0 - AV input, and
> normal anologue TV channel on other channels. Sony is now taking
> charge of TV and only shows Sony RGB output irrespective of channel
> selected on TV.
> I think it is something to do with scart pin 8 - "switch signal video
> status". I suspect that when this is powered by the Sony, the telly
> remains switched internally to Channel 0, the AV input.
> Grateful for some assistance - can I just cut pin 8 wire??

As long as the TV isn't using Pin 8 for switching between 4:3 and 16:9 as
well, it shouldn't cause a problem to cut it as you'll be able to select
it manually. It's also possible that the HDD/DVD recorder has a "TV/VCR"
or similar button on the remote that disables/enables the set top box
outputting a signal on pin 8.

Unfortunately, if the HDD/DVD recorder is outputting an RGB signal, some
cheaper TVs don't cope well with a signal being present on the SCART even
if pin 8 is disabled - my parents' awful Goodmans TV being a prime
example!

Andrew

--
---------------------------- Andrew Maddison ----------------------------
*(email)* andrewnews *(at)* resbh *(dot)* co *(dot)* uk
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In article
<7cc06398-59e8-4148-b06b-dc23ef2379cf RemoveThis @p69g2000hsa.googlegroups.com>,
colinstone RemoveThis @hotmail.com <colinstone RemoveThis @hotmail.com> wrote:
> Just plugged in a Sony HDD/DVD Freeview machine into an analogue TV
> using a fully wired scart cable. Sony is on Channel 0 - AV input, and
> normal anologue TV channel on other channels. Sony is now taking
> charge of TV and only shows Sony RGB output irrespective of channel
> selected on TV.
> I think it is something to do with scart pin 8 - "switch signal video
> status". I suspect that when this is powered by the Sony, the telly
> remains switched internally to Channel 0, the AV input.
> Grateful for some assistance - can I just cut pin 8 wire??

Depends. Some sets also use pin 8 for setting the aspect ratio. Also some
sets can't have an RGB signal present and work on their internal tuner
properly - you get breakthrough. So if they sense an RGB signal they
switch to it.

Can't you just switch the STB to standby to revert the set to normal?

--
*Age is a very high price to pay for maturity.

Dave Plowman dave RemoveThis @davenoise.co.uk London SW
To e-mail, change noise into sound.
 >> Stay informed about: Scart switching 

In article
<501fed04-9b75-48d4-bb0e-dd737429c6a3 DeleteThis @v32g2000hsa.googlegroups.com>,
colinstone DeleteThis @hotmail.com <colinstone DeleteThis @hotmail.com> wrote:
> Cracked it - snipped lines to pin 8 and 16. With only pin 8 line
> snipped, sound changed channels but left with odd picture - 1/4
> frames. With line 16 sniped as well a perfect pic from all systems.

Well, yes. But a 'perfect' composite picture. Without pin 16 no RGB.

--
*Why are a wise man and a wise guy opposites?

Dave Plowman dave DeleteThis @davenoise.co.uk London SW
To e-mail, change noise into sound.
 >> Stay informed about: Scart switching