iphone display brightess problem!!! - GSM-Forum

mobile_juice · 12-22-2010, 11:23

iphone display brightess problem!!!
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please need hellp

switch998 · 12-22-2010, 21:24

Is it too bright, blurry, or does it have a white tint?

White tint = change display

Paki Mobile · 12-24-2010, 10:57

Quote:

Originally Posted by switch998

Is it too bright, blurry, or does it have a white tint?

White tint = change display

ihave tried 5 lcd$ but still too bright

b4ff0 · 12-28-2010, 16:38

hi...got the same problem... i have solved it changing these inductor. I sugest you however to remove the shield that cover the LCD power circuit and to look if some component is fried.

sorry 4 my bad english... hope to help you.

jseraphim · 12-29-2010, 04:08

Check Rsense by the PMU is OK, it should be about 25 ohms to ground. If the trace from the display gets shorted to ground instead of coming to this resistor to ground, then brightness will always run at 100% no matter what the software adjustment setting.
I know because I tried connecting to ground right at the LCD connector instead of using the feedback path on a unit, it was always too bright and couldn't turn it down.

mobilejunc · 01-17-2011, 17:11

iphone 3g no display only vibration by pressing silent button.i check with 5 diffrent display but same..plz help

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12-22-2010, 21:24	#2 (permalink)
switch998 Insane Poster Join Date: Jun 2008 Posts: 76 Member: 785337 Status: Offline Thanks Meter: 22	Is it too bright, blurry, or does it have a white tint? White tint = change display

12-28-2010, 16:38	#4 (permalink)
b4ff0 Crazy Poster Join Date: Dec 2009 Posts: 56 Member: 1190812 Status: Offline Thanks Meter: 17	hi...got the same problem... i have solved it changing these inductor. I sugest you however to remove the shield that cover the LCD power circuit and to look if some component is fried. sorry 4 my bad english... hope to help you.

12-29-2010, 04:08	#5 (permalink)
jseraphim Crazy Poster Join Date: Jun 2010 Posts: 58 Member: 1318122 Status: Offline Thanks Meter: 37	Check Rsense by the PMU is OK, it should be about 25 ohms to ground. If the trace from the display gets shorted to ground instead of coming to this resistor to ground, then brightness will always run at 100% no matter what the software adjustment setting. I know because I tried connecting to ground right at the LCD connector instead of using the feedback path on a unit, it was always too bright and couldn't turn it down.

01-17-2011, 17:11	#6 (permalink)
mobilejunc Freak Poster Join Date: Dec 2004 Age: 46 Posts: 362 Member: 101650 Status: Offline Thanks Meter: 46	iphone 3g no display only vibration by pressing silent button.i check with 5 diffrent display but same..plz help