Technical help required

[andrewducker]

On the positive side, I have discovered that my birthday present of an A/V Amp also routes video signals, so I can dispose of my SCART switcher and about 13 cables.

On the negative side, when the AV amp is connected to my TV it requires a component (red/white/yellow) cable to SCART convertor.  Normally, a SCART input causes it to switch to the correct input automatically, but the component input seems to be missing that signal.

Is there anything I can do about this, or do I just have to press the AV button on my remote every time I turn the TV on?

Comments

[guyinahat.livejournal.com]

Dunno, but try geeks. Someone is bound to know there...

[dalglir.livejournal.com]

We have the Playstation 2 connected to the TV via this cable-to-SCART connector and, yes, we have to press the AV button to get at the signal (which is much crisper than connecting via coax so I'm not complaining).

[dreema.livejournal.com]

yeah, i do as well, although with my telly if I don't change off the ps2 or xbox in between turning the tv off and on again, it seems to recognise it was the same device and stay on the right av channel, if I switch between the two using the switcher, then next time the tv turns on, I have to press the av button. very odd

Auto Switching

[vereybowring.livejournal.com]

It's mainly the TV at fault, some are designed to detect any scart plugged in and producing a signal - most don't they just pick up the normal carrier signal. Just life I'm afraid. If you want to check it out you may have only a one way signal happening, or alternatively need to have only one way. Anyway, here's the official diagram.
http://www.interfacebus.com/Design_Connector_Video.html

Re: Auto Switching

[andrewducker]

As I said above:
Normally, a SCART input causes it to switch to the correct input automatically, but the component input seems to be missing that signal.

It's only since I switched to component input that the problem has started, and indeed, verification elsewhere has shown that while SCART plugs have a pin to indicate that they are currently sending a signal, composite cables don't have that functionality.

Re: Auto Switching

[vereybowring.livejournal.com]

Have you tried finding a composite that does ?
Some electronics shops actually employ electrical engineers to make custom kit after all. Either that or carefully read the diagrams yourself and make a pin through to a battery outputting the correct low voltage signal (care needed obviously, I have known people to short out equipment doing similar things and getting it wrong).

Re: Auto Switching

[andrewducker]

Alas, composite cables have but a single pin. If you look at that link you put above:
http://www.interfacebus.com/Design_Connector_Video.html
then you'll see the second one down has three cables - red, white and yellow. Red is Audio Left, White is Audio Right, Yellow is Video.

Re: Auto Switching

[vereybowring.livejournal.com]

Yes, then comes the second part of my comment where you get a compostie scart block and connect up the relevant pin yourself (or find someone to amek one for you).

Re: Auto Switching

[andrewducker]

Aaaah, yes

I'll have to look into that.

[thestinkyclub.livejournal.com]

i rarely have any clue what you are talking about. Amazing!