LED automation for my TV

[techead]

hi everyone

I hope someone here is in the position to assist me with the below query.

I have the following AV receiver, a Marantz NR-1402 connected to the following TV, a Samsung PS42C430

Nothing fancy, but it works for me and Im happy with it all

I've just recently installed some LED back lighting onto the back of my TV and TV Unit. It looks really nice, but I would like to automate it somehow. At the moment when I switch on the TV then I have to go and switch on the LED's as well. I have the LED's connected to a Computer PSU (on the 12v rail). I currently have a small wire which shorts as a on-off switch.

Is there any way I can connect everything, so when I turn on the TV it sends some kind of signal from the AV Receiver, which makes the LED's come on?

Any help would be much appreciated

 

[techead]

1. I cant edit my posts lol
2. links are not allow coz Im new here. I tried to link the AV Receiver and the TV for everyone

 

[TonyNo]

There is a manufacturer that makes sensor devices for triggering things based on audio/video signals. I can't recall who it was, but, someone here will!
 
EDIT: Here's one... http://www.amx.com/products/VSS2.asp

 

[potts.mike]

Does the receiver have a 12v trigger? You might be able to use it to trigger a relay.

 

[electron]

Your account has been upgraded, you will be able to post links, etc.
 
Many receivers have an option to plug in another device which it will turn on when the receiver turns on, does yours support this?
 
Another approach is to monitor current with a CR Magnetics type sensor, and have it drive a relay.

 

[tmbrown97]

Call me low tech (normally I do go overboard when automating things, but this is too easy)... but I'd just do something like this - in fact, I have this exact one on my TV so when it's off, it kills the accessories anyway - you could plug your LED light power supply into one of the switched outlets:
Smart Strip SCG3 Energy Saving Power Strip with Autoswitching Technology

 

[BraveSirRobbin]

Possibly plug the TV and LED lighting into one of these (careful not to exceed its ten amp rating though).
 
EDIT:  No-go, see post #9 below!

 

[electron]

Many TVs use a 'toggle' for the power button tho, not sure how well that would work.

 

[BraveSirRobbin]

Actually, you have to press the power button remote 'twice for on and once for off' according to the manual.
 
BUT, after further review, it seems this unit will NOT work even with that employed methodology as it has to detect that the TV is not drawing any current from the outlet in order to turn the unit off (thus the LED draw might keep that from happening)! 
 
Oh well, back to the drawing board!

 

[electron]

The unit Work2Play mentioned should do the job. It's a commercial version of what I described, so it should work well.

 

[BraveSirRobbin]

Yea, the other thing you can do is to get a device like THIS that will monitor the TV's current, then provide a contact closure if that current threshold is exceeded.  This contact closure will then act like a switch for the LED lighting.
 
I bought a really cheap one (I'll have to look for the brand at home tonight) with an adjustable threshold for something like $20 (can't remember) that did this as well.

 

[BraveSirRobbin]

Just a quick update, here are links to the unit I bought just to play around with.
 
http://www.ebay.com/itm/RIBXGTA-CURRENT-SWITCH-/280830904276
 
http://www.functionaldevices.com/pdf/datasheets/RIBXG_SERIES.pdf
 
http://www.functionaldevices.com/building-automation/display.php?model=RIBXGTA
 
Doesn't require any external power and the contacts will close after the current reaches the adjustable lower set point.  You don't have to 'cut' the cable in half either as the side opens up.  It's a pretty handy unit for twenty bucks!

 

[userone]

Just a quick update, here are links to the unit I bought just to play around with.
 
http://www.ebay.com/itm/RIBXGTA-CURRENT-SWITCH-/280830904276
 
http://www.functionaldevices.com/pdf/datasheets/RIBXG_SERIES.pdf
 
http://www.functionaldevices.com/building-automation/display.php?model=RIBXGTA
 
Doesn't require any external power and the contacts will close after the current reaches the adjustable lower set point.  You don't have to 'cut' the cable in half either as the side opens up.  It's a pretty handy unit for twenty bucks!

maybe i am reading it wrong but doesnt that say for 75-150amps, unless you live in a staduim i dont think your tv pulls that much power.  

 

[tmbrown97]

maybe i am reading it wrong but doesnt that say for 75-150amps, unless you live in a staduim i dont think your tv pulls that much power.  

Yeah you read it wrong - there was a decimal point in there that you missed - it's .75 to 150 amps.
 
That said, .75 amps is 90 watts so depending on the device you may not generate enough current to trigger it.

 

[BraveSirRobbin]

I'm sure the general rule for current donuts would apply for wrapping it twice for a lower threshold of 37.5 amps...oh wait, I mean 0.375!
 
If anyone wanted to use this and had a small current I could test it with mine.