Acer and other laptop dispays

Hello all

I have been sitting and pondering here.

Simple question: Why do lappies using TFT technology for their displays seem to loose brightness and contrast over time?

I say this because a mate of mine brought his new Aspire 4315 into the shop today, and I was thinking: "My 5684 display looked so bright and clear like that when new.....and mine looks kind of dullish".

My backround, as anybody that knows me here is that of a TV Tech. I spot display problems, linearity probs and general picture problems quicker than average Joe or the normal consumer.

We all know that (most affordable - at least here) TV's use CRT technology. In other words, a CRT or Cathode Ray Tube. When the tube is tired, your picture is really dark and bad.

However, TFT technology uses transistors to power laptop displays. Transistors never give lower emission or any other problems. They either work 100% or nothing at all. They do not "wear out after time" and give a bad picture.

So what I am trying to say is this: If your laptop display seems less bright than when you first bought it, it can only be because the backlighting is getting older and providing less light to eluminate the display.....

Comments and chirps welcome

 

As you may know, LED backlights stay bright a lot longer than CCFL displays. That's one of the reasons LED are replacing CCFL backlights.

 

Thanks Phil.

Is there any practical way to replace the backlighting on a normal TFT display?

Soory... I am from Aaafrica. We are a bit retarded here and all.

 

I think it's only possible to replace the entire display. I'm not sure though.

 

Yes, you can easily replace those ccfl bulb in the lcd display. They're about $10 each.

 

It's a very tedious job, but as noted, it can be done.

 

You can replace the CCFL backlight of your display, but it's not exactly easy, especially for "a bit retarded" p) people.

Otherwise, you will find a number of guides on this topic...
http://www.laptoprepair101.com/laptop/2007/12/09/replace-laptop-backlight-ccfl-lamp/

 

LOL@ "a bit retarded" people

 

Will look into it.

Thanks folks.....

Thanks ZAZ. You are a star. If you had said it could not be done.....I would of not even tried.

Tedious is fine.....impossible = No

Retarded is fact. New Avitar tonight....And it's not me. Just an example of what I work with ....

 

Especially if you're a "TV Tech", replacing the CCFL should be a 10-15 minute process. It's super easy if you know what you're doing.

 

And don't run 'em so bright if you don't need to. You know what happens to CRT emmision/life if you turn the brill and contrast up to full. That little invertor runs a whole lot cooler too

 

+1 to Zaz and Dreamer.

Zaz for confirming it is possible (but tedious), and Dreamer later providing a valuable link.

I always ask before I fiddle......

Thanks folks...much appreciated.