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Old 14-05-2008, 16:40   #1
chris21
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LCD Backlight?

I keep hearing about backlights on LCD's. If my TV has one I can't access it through any settings? I believe it's advisable to have them turned right down so I was looking for it but no joy.

Is it possible my TV doesn't have one? Or is it just not possible to adjust it?

It's the Philips32PF9641D by the way.

To be honest I'm not even sure what a backlight does. I know I have an ambilight...

Thanks for any help.

Last edited by chris21; 14-05-2008 at 16:40.
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Old 15-05-2008, 13:03   #2
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So nobody knows how to adjust a backlight?
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Old 15-05-2008, 17:02   #3
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I'll reply.

The transistors in your lcd/tft screen cannot produce a clear image on their own and hence need a light behind them in order for you to see a picture. In effect as soon as you turn on your tv, the backlight is on. If you didn't have a backlight, you wouldn't see a great deal/anything.

I'm sure you've adjusted the brightness/contrast on your tv before? Well you've already turned up/down the backlight.

Thats as far as I know what it is. Google is your friend and you'd find a lot more info there.
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Old 15-05-2008, 17:04   #4
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try this, I can't bear to sit through it but it seems a good explanation from the quick look I took.
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Old 15-05-2008, 18:05   #5
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Thanks, mate.
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Old 15-05-2008, 18:16   #6
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On my LCD there is a backlight control in the menus as well as brightness/contrast.
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Old 15-05-2008, 18:41   #7
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Quote:
Originally Posted by thescrounger View Post
On my LCD there is a backlight control in the menus as well as brightness/contrast.
So I'm not cracking up!

I thought surely people wouldn't mention turning down the backlight, if it meant turning down the contrast etc.

My TV obviously doesn't have a "backlight" option.

Last edited by chris21; 15-05-2008 at 18:43.
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Old 16-05-2008, 08:34   #8
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I think the backlight option you have probably does what it says on the tin, turns down the backlight, dims it by a proportion. This in effect is at the same time altering the brightness/contrast. I don't have this on my tv (toshiba) so I can't look.

To explain what I'm trying to say, if you had 2 buckets, and a pipe, split into a V so it connected to both, then you could manually empty or fill each bucket(individually - like brightness and contrast) or by using the pipe, fill or empty both at once (backlight control).
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Old 16-05-2008, 09:10   #9
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Quote:
Originally Posted by thescrounger View Post
On my LCD there is a backlight control in the menus as well as brightness/contrast.
mine too (samsung).
but my older pc monitor does dim the light with the brightness control, also samsung.
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