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Turning the TV on with the computer via a relay??
Scumgriever:
Ok guys, just a quick check to see if this is going to work.
I need to get my TV to turn on with my computer so that the cab comes alive all at once. I’ve built a relay based power board for the marquee light and speakers like the one Spystyle has up here - http://spystyle.arcadecontrols.com/01/index81.htm . That’s up and working which was very exciting seeing as I have VERY limited electronics experience. :)
Anyway the problem I’m having is that When the TV is given power at the plug it doesn’t come on. It needs to have power at the plug and then have the main switch at the front pressed. This switch isn’t the momentary type, (it stays in after being pressed once and pops back out again when its pressed again to turn the TV off)
It is not the switch to put the TV on ‘standby’ so to speak. That function is only available from the remote. It seems to be a true on off switch.
What’s giving me the troubles is that even if you give the TV power when the switch is pushed (in the on position) it wont come on. The switch needs to be switched while the TV is plugged in.
So, I was thinking of wiring another relay into the power switch on the TV.
See the pic for how I’m planning to wire it.
Considering my lack of experience I figured it’d be best if I jumped on here and checked that this will work before I massacre my TV... more.
I’m 99% sure that the switch connects the blue points together and the red points together (see pic) but is it possible that it goes the other way? Connecting sideways?
Anyway, Can anyone see any reason that this won’t work? I’m not at all confident but very hopeful.
ChadTower:
That would probably work if you wanted to duplicate the function of the power button automatically. I'd be tempted to see if I can't figure out why it needs that to happen and eliminate it.
Kevin Mullins:
I agree... that would work for the power switch since it's a mechanical "on-off" type switch on the tv as I understand the way you describe it.
My question is: What is the tv's power cord plugged into?
If that power source is switchable on and off then why not just leave the tv's power button "ON".
Just trying to understand the rest of your setup.
ChadTower:
The description makes me think it's a two seat momentary contact switch. It only ever makes contact momentarily but it can be pressed in or out so a person can see if the TV is off or on. Why they couldn't just look at the screen, no idea.
Trace the wires back from that little PCB and see if maybe you can't just short whatever it is connected to to keep it on.
Scumgriever:
--- Quote ---I'd be tempted to see if I can't figure out why it needs that to happen and eliminate it.
--- End quote ---
I've been tempted to do all sorts of things but my skills need work. :dunno
just getting the computer to turn the telly on will satisfy me nicely.
Just for arguments sake though ... any ideas?
--- Quote ---I agree... that would work for the power switch since it's a mechanical "on-off" type switch on the tv as I understand the way you describe it.
--- End quote ---
I'm not 100% sure it is this type of switch but I assume it is because of the action of the button.
--- Quote ---My question is: What is the tv's power cord plugged into?
If that power source is switchable on and off then why not just leave the tv's power button "ON".
--- End quote ---
The TV is plugged into one of the normal sockets on the pwerboard, meaning that it gets power all the time, although I could just as simply plug it into one of the 'relayed' sockets
I can't just leave the button in the on position because it won't work that way. The switch needs to be pressed after the TV has power...
which worries me making me think that it just might be a momentary type switch after all...
but then you'd think that the in = on, out = off would get all switched around if the button was pushed while there was no power to the TV. this is not the case.
The TV is an LG A59KYL220X 06 according to the sticker on the tube if that will help anyone figure out if this will go ok for me.
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