Some flecks in my RGB screen...

Last week I recived my laptop from ebay.
After a few days used, I noticed that the RGB screen got some flecks on it.
At first I though they were dust but when I tried to cleared it, it still stuck there.
Then I though it could be something stuck behind the screen cover.

I found the video in the forums intructed how to clear the dust behind the screen.
YouTube - Opening the screen of Dell's Studio XPS 1640

But I can not sure they were dust or dirty spot or dead pixes or something else.
so I am afraid I can not clear the flecks and make it worse.

I post some pics here, plz help me diagnose what they could be.




I dont want to call dell support because the current screen is fine (no flicker, color is great..) except the flecks, I had read some threads said that the replacements were not good...

 

Doesn't look bad pixels to me which leaves only a few options.

1) Contact the seller and get a partial refund assuming it came that way, then use it as is.
2) Open it up and clean it
3) If #2 doesn't work out, then contact Dell as your last resort. Have them swap the whole display unit assuming they have one in stock.

 

Last week, I noticed some dust under the screen of my Dell Studio XPS 1647. I contacted Dell through their chat support and they replaced the entire RGBLED screen. Though they say that the replacement screen is refurbished, it looks brand new to me.

 

Got those too...... Hate it!

 

#2 is very unlikely to work out.

If I'm right you're talking about removing the LCD glass with PCB attached to get under it to the diffusers.
If you even touch a diffuser like that without extremely clean gloves and in a dust free environment, its only going to make it worse.

Unless there is a protector over the LCD?

 

There's an "edge-to-edge" plastic sheet in front of the entire LCD assembly.