Not enough power going to monitor?

[Diskordea]

I was using an AC adapter that inputs 12v. The adapter that is for the monitor is 19v. The monitor is discolored and has lines running down it on one side. I was wondering if a lack of power could cause this issue. I have not used the monitor before so I don't know if it works properly. Trying to figure out if low voltage could be the cause before I bother buying the appropriate AC adapter.

 

[millwright]

Of course it dose.
Voltage is very important.

The other problem you haven't discovered yet, is that power supply is trying it's hardest to put out the 19 volts and amps the monitor is asking for.

It might even be getting close, but the power won't be clean, and it could burst into flames, because it is drawing more amps, than it is designed for.

That's just how electricity works.
Demand controls load.

 

[sewalk]

Demand affects current, not voltage. If anything, the voltage will drop, not increase, under load.

You are not completely clear in your description of the problem whether the monitor requires 19V and you're using a 12V power supply, or if it's the other way around. I hope you're trying to use a 12V power supply on a 19V monitor because the alternative would probably result in permanent damage to the monitor.

You can often get away with a power supply that is close, but not exactly, matched to the load's requirement. If you get within about 20%, most devices will hardly notice the difference and are generally designed with enough headroom to accept such loose tolerances. You're closer to 40%, so the fact that the monitor displays anything at all is surprising. The good news is that insufficient voltage is pretty unlikely to cause damage. Find a correctly rated power supply and use it instead.

I should probably mention that laptops and other devices that charge batteries have much tighter requirements for power supplies. Don't play fast and loose with them; you can start a battery fire.

 

[millwright]

Yeah it's late.
I'm mixing up volts with amps.. That usually get watts

I wonder what the amps on the power supply vs the Monitors requirements are.