Iphone 3gs 109b ic question

[gizmo.1484]

A m8 of mine tryed to fix is 3gs dim backlight problem by changing the 6r8 coil but failed.... He as lifted one of the solder pads..doh..
So he as give it me to fix (which he should have in the first place)
Any way what i need to know is which of the 6 legs of the 109b ic is number 1?(looking at it with the 6r8 coil on the left and resistors 105 &104 on the right)

Thanks for your help........

[zummuz]

Maybe this will help

[gizmo.1484]

Thanks for the reply, but that is just the component layout schematic.


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[Argento7]

Please, use Zummuz pic to mark around "109b I.C"... I cant found. Here, full component layout, maybe useful

[Argento7]

I see... 109b I.C. is Q3_AP? look picture
Also, look this...
http://www.ebay.de/itm/iPhone-3GS-LC...item2562ba22a3

[zummuz]

Thanks for the reply, but that is just the component layout ...

You asked for exact location of pin 1 of that IC. That was exactly what I gave you. A cropped image from the big picture of 3gs layout. All IC have marks where pin1 are. As argento7 noticed.
If you looked for something else let us know and we will help you as well.

[gizmo.1484]

You asked for exact location of pin 1 of that IC. That was exactly what I gave you. A cropped image from the big picture of 3gs layout. All IC have marks where pin1 are. As argento7 noticed.
If you looked for something else let us know and we will help you as well.

I didn't see that mark ....eyes not what they used to be .
Thanks.....


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[Argento7]

Ok, happy you found solution. Maybe you can press "thanks" for us...! Good work Zummuz!

[gizmo.1484]

Ok, happy you found solution. Maybe you can press "thanks" for us...! Good work Zummuz!

I will go one better....Rep + Thanks hows that

[Argento7]

Thank you very much. I wish we can help you when you need. Have a nice day Friend!

[von hayden]

post

website will not let me click the view link for the pictures


so im putting up a post to try and see if it works

[garpa]

Hi.

I have an Iphone 3gs with a backlight problem.

I changed the 6r8 coil, and the problem persists.

if I change the 109b ic?, my problem will be resolved? thanks in advance.

[tavo]

can Some body help me to find IC 109 pin #1?
Thans in advance

[zitoun]

Hi everybody,
I have changed both IC 109B and 6R8, but the backlight problem remains. LCD screen is OK, as well as connection between 109b and LCD connector. Any idea?

[Ritchdan]

Does any body know what the coil next to 6r8 is and if it has anything to do with backlight. Iv noticed on mine that there is a corner missing. Thanks in advance. Hopefully can download some of these pics as well now.

I can't seem to find which component L11_AP is. I can't seem to find it on the full component layout supplied by Argento7 thanks btw.
As anybody ever had problems with this component. Thanks