I go to sleep with YouTube playing, and the light stays on all night. The light has to come from somewhere.

Not exactly "light bulbs", but rather LEDs. Found this video that shows the actual part in action.

[www.youtube.com]

They're lED lights and a bunch of film/polarizer layers to bounce it/filter it around.

Watch a youtube iphone backlight replacement video some night.


Edit: unless it is a new one with an OLED screen. In which case the LCD are 'self-lighting' and you'll fine the manufacturers embracing dark UI to extend battery life.

---

The Phorum Wall keeps us safe from illegal characters and words
The doorstep to the temple of wisdom is the knowledge of one's own ignorance. -Benjamin Franklin
BOYCOTT YOPLAIT [www.noyoplait.com]
[soundcloud.com]




Edited 2 time(s). Last edit at 12/06/2018 02:23PM by billb.

I believe the LED's in backlights are typically rated for 100,000 hours. Or 11.4 years if left on 24/7.

Easy enough to change the ballast.

---

Saint Cloud, Minnesota, where the weather is wonderful even when it isn't.

.....L.E.D. it go......Let it go..........

---

____________________________________________________

I reject your reality and substitute my own!

No.

They have very tiny candles.

.....any repetitive works results in people being.....'burned out'.......

---

____________________________________________________

I reject your reality and substitute my own!

Quote
Forrest
I believe the LED's in backlights are typically rated for 100,000 hours. Or 11.4 years if left on 24/7.

And yet my son's LED on his iphone 5S died after about 4 years and needed replacement.
I'm sure that they fudge the numbers on the rating.

---

All I ever really needed to know, I learned from watching Star Trek.



Edited 1 time(s). Last edit at 12/06/2018 05:44PM by wowzer.

One of the ways numbers are 'fudged' is to rate an LED, bulb, or panel at a level, less than full output, that will certainly be exceeded by most users.

There are enough variables in specs taken on trust, that actual life expectancy is often bears little relationship to lab scenarios.

---

When a good man is hurt,
all who would be called good
must suffer with him.

You and I have memories longer than the road that stretches out ahead.

There is no safety for honest men
except by believing all possible evil
of evil men.

We don’t do focus groups. They just ensure that you don’t offend anyone, and produce bland inoffensive products. —Sir Jonathan Ive

-An armed society is a polite society.
And hope is a lousy defense.

You make me pull, I'll put you down.

Mister, that's a ten-gallon hat on a twenty-gallon head.

I *love* Sigs. It's Glocks I hate.

My Mom still uses my original iPhone daily to play a few games with long term statistics (she has an iPhone 6 for regular use). Still working with original everything after 11+ years.

Some burn out sooner and some later.

My original and 3GS 'Phones still work, at least as an iPod.

---

When a good man is hurt,
all who would be called good
must suffer with him.

You and I have memories longer than the road that stretches out ahead.

There is no safety for honest men
except by believing all possible evil
of evil men.

We don’t do focus groups. They just ensure that you don’t offend anyone, and produce bland inoffensive products. —Sir Jonathan Ive

-An armed society is a polite society.
And hope is a lousy defense.

You make me pull, I'll put you down.

Mister, that's a ten-gallon hat on a twenty-gallon head.

I *love* Sigs. It's Glocks I hate.

Maybe DON'T go to sleep with youtube playing?

---

__________________________________
Never underestimate the predictability of stupidity