All-In-One desktop issue

[WinDrop]

 Hi,

I have a problem with an All-In-One desktop computer (PCG-11211M) which I had for quite a while.
Recently screen has started to play up.

When I turn it on it's just black. Nothing comes up, not even the VAIO logo.

Now the funny thing is that if I press display On/Off button which is located on the top left corner of the computer screen flickers.

It turns on for about a second then goes blank again.
Then I have to turn the screen on again and once I press the button to turn it off it clickers again doing exactly the same thing.

No artifacts on the screen itself, everything is crystal clear it's just the fact that it doesn't come up.

Could you please advise on what could be the problem or what kind of test could I run?

Please note that I already reset BIOS settings (had to constantly turn the screen on and off to see what I have to press) but this didn't help.

This is not driver problem as BIOS doesn't load drivers.
I doubt that this is the video card itself as when it does flicker the image is crystal clear and if video chips itself would be faulty then there would be some artifacts on the screen or it wouldn't turn on at all.

Please recommend what other tests I could run.
Don't be afraid to suggest advanced tests. I am an IT technician and can easily run any test you suggest.

Hope to hear from you soon.

[WinDrop]

Of course.

I should receive item on Friday so will replace it on the same day as well as reply to this post as soon as I know did it actually fixed the issue or not.

[WinDrop]

Unfortunately this inverter didn't fix the problem.

Still same symptoms as before.

Still could see screen if I look at with with flashlight.

I will probably contact Sony and see how much they will charge for repair.

Thank you for all your help.

[rich912]

That's dissapointing! It is almost certainly a lack of power to whatever lights the LCD (lamp(s) or LED) which should be relatively inexpensive to correct. In addition to contacting Sony it may be prudent to abtain a quotation from an independent repairer.

Good luck and please let us know the outcome.

Rich

[t4star]

Did you ever solve this as i have the exact same problem?

Tom

[brianx2764674m]

HELLO,

         I have a sony vaio model PCG-11212M All In One.

      It can come on but the display light of the sreen is off. When i press the display light botton it will como on but the sreen will not. I dont know why?

So i need a help please.

[Joe_Dohn]

Can you try recording a short video and upload it to a sharing site (Google Drive for example) so we can have a better idea of what you're describing?

It does seem like something to get an engineer for though.