Monitor powering on but not showing any display

By jumungo4
in Hardware Hangout

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Grand Master

Mindovermaster Global Moderator

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You have the screen enabled in Mac display settings?

 

Also, your back light might be dead. Does it work on another computer, perhaps? Just to verify.

 

Very unlikely, but the adapter or HDMI cable might be dead.

Grand Master

Mindovermaster Global Moderator

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Posted (edited)

I never used Mac, so just the display settings "might" not have the second display detected. Years, years ago we had to do this in Linux, too.

 

HDMI can be DOA. But test that monitor on a different PC just to be sure. :)

Grand Master

techbeck

Posted
Posted
4 hours ago, Mindovermaster said:

 

Also, your back light might be dead. Does it work on another computer, perhaps? Just to verify.

Not sure if it so works on newer displays, have not had one go out, but I used to use a flash light to tell if the back light died.  Shine the light on the screen and should be able to make out something. 

Grand Master

Mindovermaster Global Moderator

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21 minutes ago, techbeck said:

Not sure if it so works on newer displays, have not had one go out, but I used to use a flash light to tell if the back light died.  Shine the light on the screen and should be able to make out something. 

It always seemed to work for me. /shrug

 

Why putting it on a different computer will varify that issue. Or you can use a flashlight, too..

Veteran

DentedAphid7

Posted
Posted (edited)

What adapter you using? I mean what brand and which one? (That shouldn't really matter)

Have you go to setting and detect/enable dual display? (I had to do that on mine)

Is HDMI cable at it's faults? (Could be faulty cable or the cable don't support your desired resolution)

Proficient

jumungo4

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11 hours ago, techbeck said:

Not sure if it so works on newer displays, have not had one go out, but I used to use a flash light to tell if the back light died.  Shine the light on the screen and should be able to make out something. 

Yeah I can see the windows very lightly on the screen in the dark.

 

Does the brightness need to be turned up or is it the backlight that has gone?

Grand Master

techbeck

Posted
Posted
1 hour ago, jumungo4 said:

Yeah I can see the windows very lightly on the screen in the dark.

 

Does the brightness need to be turned up or is it the backlight that has gone?

Adjust the brightness and if that does not work, back light has prob gone out.

Grand Master

Mindovermaster Global Moderator

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External monitor still under warranty? If not, you can get a new screen for cheap.

 

Just tell us the model number of your screen. Looks like an Acer.

Grand Master

techbeck

Posted
Posted
4 minutes ago, jumungo4 said:

Acer S240HL

https://images-eu.ssl-images-amazon.com/images/I/B1P8oh22d3S.pdf

 

Start on page 18.  But as already noted, if your backlight is dead, which is the way it sounds, then you will not see a menu display on the monitor.

Grand Master

Mindovermaster Global Moderator

Posted
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Posted (edited)
23 minutes ago, jumungo4 said:

Acer S240HL

Monitor is around 100 USD on eBay. So, if it isn't under warranty, just ditch it. It's not worth repairing. You'd spend as much money for a new one than repairing it...

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