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Why doesn't my screen work!?

ok, so i jumped into a pool with my phone.. jumped straight out and it was dead. i took the back off and accidently tore the battery ribbon. i had it submerged in rice for a couple of days until i got a new battery. i then installed the new battery and turned it on. i can hear the phone working, it makes the usual sounds and it vibrates except my screen had nothing. it was black, not white or grey. i have just got my new screen and installed that and i still have the same problem.. can anybody help??

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Also my flash stays on whilst the iphone is on.. and i have discovered that with the new screen i can unlock the screen, just still no picture or light

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It turns out there is a picture on it, but it's only visible by shining a bright light on it.. im guessing its a backlight problem.. does anyone know a fix??

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shae, first off you do want to clean your phone. Rice makes for a great meal, but not to fix any device. It will remove some of the water marginally, but it will not prevent any corrosion. It is also a PITA to remove swollen rice grains out of audio jacks etc. Use this guide to disassemble your phone. Then use this one to properly clean your phone. It was written for a 3G but all the steps still apply to your phone as well. Once you got this accomplished, reassemble your phone and see what you got. If it still will not show a backlight, even after you cleaned it replaced the LCD and replaced the battery, it is possible that you need a new backlight IC and/or coil. This will require soldering very small parts onto the logic board.

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Hope this helps, good luck.

Imagen iPhone 4 Logic Board

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iPhone 4 Logic Board Replacement

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30 minutes - 2 hours

Imagen iPhone

Guía

Repairing iPhone Liquid Damage

Dificultad:

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1 - 2 hours

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Thanks for the reply, i did notice the slightest bit of corrosion near the display port, i blasted it with contact cleaner but i might try soaking and brushing. il let you know how i go

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ok so i soaked it and brushed everything and it still the same.. i had a look where the IC is and it all looks alright from what i can tell but im guessing that's my problem.. i cant think of anything else.. problem is, is i cant change it myself -.-

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Sorry to hear that. Not sure where you are located, but you might try a service to do it for you. Cheaper than a new phone....

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Clean the backlit port at both ends: on logic board and of display/digitizer as well. If you have not ripped off the display/digitizer cable while assembling it. Good luck my friend.

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shae estará eternamente agradecido.
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