iphone 3g display problem

[Stylo_GSM]

hi,

i got a iphone 3g which is white screen which black faint stripes lines across the screen, i change screen and touch , same problem.

what could be the fault?

[colonia]

Originally Posted by Stylo_GSM

hi,

i got a iphone 3g which is white screen which black faint stripes lines across the screen, i change screen and touch , same problem.

what could be the fault?

Hi everybody!

At first thanks to all iphone pros here in this forum! Really good work!

I have the same problem (iPhone 3G) and we checked everything on this phone really everything even x-rayed it in a factory that does SMD. We cannot find any damage on the logicboard. I heated with hot air station because of Wifi Problem and after this no more "real" picture on the display.
If I try restore on itunes I get error 1604. Changed lcd and whole display no help.

Does anyone know what else I can do? Thanks!

[colonia]

Nobody an idea?

Thanks for any advice

best regards from germany

[Geronino]

First of all i would change the Dockconnector and try to sync with iTunes.
It looks like a problem with the connector.

Did you've connected all connectors?
try using only the LCD cable without Touch- and sensor-cable.

worst case, you've damaged the mainboard while soldering the wifi connection.

Don't know if you can see a broken connection with x-ray?

I would try to desolder/solder the LCD connector on the board,
if you already heated the board it dosn't matter.

good luck

[colonia]

changing dockconnector and the sync/restore I have done before. No success...
Thank you! I will try the rest and post results

[Burnt Cobba]

Originally Posted by colonia

Nobody an idea?

Thanks for any advice

best regards from germany

If you just reflowed PMB2525 and got this then logically the problem is around it. My first guess is that you overheated this IC itself. Really strange as the display IC is on the other side of the board... literally opposite. Does it get hot when left powered on as it is? Check that IC and feel it and see if it gets abnormally hot.A short near the GPS IC could be present (or this IC itself). As it is the phone is not booting up. Showing the lines and white display means nothing except that its in a critical condition.

Anyway

1. Did you clean this IC before or you just heated it directly?
2. Did you notice any solder balls after finished the reflow... just beside the IC? If yes that is a very serious one. In this case you ll have to pull it out, reball it and place it back
3. Assuming you overheated it and none of the above worked check on the other side of the board where there is the long module which is the one of wifi and bluetooth module. If there is the need replace the whole thing. The problem is somewhere there.

Sorry mate for writing all this but its hard to do guess work like this. Its like imagining something remotely.

Come back with results and more diagnosis.

[Lanzelord]

hi, i have the same problem. after changed the fpc nr. 3 on the board, now the display ist white with stripes. i changed teh connector, but the problem is still there..
also tried a new firmware, now the display ist already black..

[topats16]

i have also same problem how can solve this problem many times i change tha lcd but no luck.i clean and resolder the lcd conector in board..any idea mate how to fix this problem

[richello baring]

Originally Posted by topats16

i have also same problem how can solve this problem many times i change tha lcd but no luck.i clean and resolder the lcd conector in board..any idea mate how to fix this problem

try to change the components beside the display ic.

[i am the master]

hello every one i got the same problem with my i phone 3gs 16gb black
well, i change the lcd connector and the lcd and done the restore aswell
nothing work at the moment
but i am still working on it as soon i workout something i will let you know guys thanks

[lahori sher]

bro its might be a battery problem.

[i am the master]

it allways happens when you overheat i phone pcb 1st of all it wil not show you any display at all on the screen but if you heat up pcb from battery side on display ic it might show you little bit display with lines but not proper solution available yet hopefully very soon

[i am the master]

Originally Posted by Stylo_GSM

hi,

i got a iphone 3g which is white screen which black faint stripes lines across the screen, i change screen and touch , same problem.

what could be the fault?

hello guys,
i had same problem with my iphone 3g 8gb black
i change the lcd but no luck.
and then i change the lcd connector but still no luck.
but luckly i saw some resistor was broken on the other side of the board
next to camera connector i did't hade any resistor so i left one and i made jumper on one so this is how i solve my problem good luck to all of you
(Malik Rashid)

[shamasgsmm]

mine problem is somtime lines and some time display 100% ok ....and my set is water damge.......but connector is in good condition ......