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Dear Friendly Electricians, I am an IT specialist. I am currently in a sticky situation. The company I'm working with is a digital advertising company. We have LCD screens to display ads. They asked me to install a timer on the screens. So they turn off during the night when the mall is closed. We are a company of 5 employees, and our technical guy didn't dare to install the timer. So I got local electricians, and every time they see what they are dealing with, they are saying no thank you. And the thing is I know it is a simple task. But why are they not helping? I don't know? Anyway, I want to take the mater to my hands. I do some home electrical stuff. And I worked as a computer tech for a while I install hardware and ..., so my scenario is that I have a power supply (image 1), the black and white cables are going to a 10-pin connector (image 2) and from that directly to the screens board. I unplugged the 10-pin connector, and I confirmed it is just for the screen. I want to install a Legrand timer on it to set it to turn off from 12 am till 8 am. now, if anyone wants to give me the courage to do it and give me a small tip and a "how-to," would be nice if not it is okay. Some electrician eventually will do it.
 

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Surely you would want to interrupt the AC mains feed to the screens? I wouldnt be breaking into the multi way connector.
 
So I should follow the brown blue-yellow-colored cables to the main feed of AC power and install it there. did I get it right?
 
Can you show a photo of where the screens are fed from. Where do the supply cables come from?
 
So the feed is coming from two sources I guess.
One from the hand switch like thing (Image3) or more like ground?
and other parts from an inverter(guessing wrong)? (Image4 sorry for quality was too far to reach)
 

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But where is the mains cable and switch (or whatever) that feeds this assembly?
 
Oof, I missed that part. It is coming from an outside plug. And it goes directly to Image4 (i think). Tomorrow ill be able to check again. But so what I understand from you, I should install it on the main power in like I would install, let say on a light. Nothing complicated?
 
Oof, I missed that part. It is coming from an outside plug. And it goes directly to Image4 (i think). Tomorrow ill be able to check again. But so what I understand from you, I should install it on the main power in like I would install, let say on a light. Nothing complicated?

It would make more sense. But would need to see photos and have more details.
 
Okay okay, hopefully, tomorrow I will be able to grab more pictures. and I'm gonna bring this last electrician, my last hope. and ill be back to upload more. Thank you for your time friend. really nice!
 
Can you post the instructions for the screens?
I would not be surprised if there was a pair of terminals provided for this purpose.
May well have a link of wire joining them at the moment, take out link, insert timer.
 
Good point concerning the links. but the thing is that when I asked for instructions from the HQ of the company which is outside my country. they were like any electrician will do it. we don't have instructions or schematics. It is a really hard situation, without IRL checking it will be hard to guess. cause there is lack of details of course.
 
do you have a picture of the nameplate?
or make and model of screen?
[automerge]1601576758[/automerge]
Help with installing a Timer on a Power Supply. InkedImage4_LI - EletriciansForums.net
 
Okay so, sorry for the delay. there is a war in our country. anyway. in Image 6 the white cable is the cable input plug. that's where the main electricity comes from and enters this confusing part.
 

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Hope things improve for your country soon.

I would definitely switch the mains input with a suitable mains rated timer, rather than attempt to do anything further into the monitor circuitry.
 
Hum understandable. it is safer of course than to just mess with the inner circuit. It is better safe than sorry. But the job is to turn off only the monitor, not the PC. The PC is supposed to be ON 24/7. To keep updating to the Main servers. Plus once the pc is off I have to manually turn it back on. Which means I have to do a daily trip to the mall every day at 10 to turn it on.
 
Hum understandable. it is safer of course than to just mess with the inner circuit. It is better safe than sorry. But the job is to turn off only the monitor, not the PC. The PC is supposed to be ON 24/7. To keep updating to the Main servers. Plus once the pc is off I have to manually turn it back on. Which means I have to do a daily trip to the mall every day at 10 to turn it on.

Ah sorry, I misunderstood. So it's a combined pc and monitor then? So you can't shut the whole thing down. In that case I would be looking at power saving options in the operating system, or some power saving utility software maybe.
 

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