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Discuss iPhone Comm Board - Any relation to Touch Screen? at the Hardware - Hackint0sh.org; Hello All. I have iphone 2G where half of the touch screen was dead. I ...
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    Default iPhone Comm Board - Any relation to Touch Screen?

    Hello All.

    I have iphone 2G where half of the touch screen was dead.
    I ordered a new lcd + digitizer off ebay and replaced it. However, SAME HALF of the screen is not working.

    Since the digitizer ribbon goes to logic board, I tried to switch the two logic boards I have to see if I get the same result. Indeed, the half of the screen remained dead on both of them.

    I wonder if touch screen has anything to do with comm board. Does anyone know? please help!



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    The commboard does not affect a half touch function of the touchscreen.
    I could affect the whole touch function only when there's a electronic failure in the commboard, but this is not the case.

    The problem you have is that the touchscreen seems to be damaged. Check the sides of the touchpanel (the crystal between the outer glass and the LCD.

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    I don't believe anything on the comm board is related to the display at all. I've fixed many cracked/dead strip phones, and all worked perfect after a screen replacement. I've never even heard of a situation where a bad comm board causes screen problems. The simple answer is the screen you ordered is defective. Either that or maybe there is a problem with your iPhone's casing that somehow causes damage the the touch ribbon cable.

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    Quote Originally Posted by tony604 View Post
    I don't believe anything on the comm board is related to the display at all.
    Believe me, it could be. Actually, when there's water damage on the commboard, but this is not the westsidegrc's case.

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    Default Possible water damage

    Hello. Thank you for your replies!

    Well, my phone stopped working after I went to snow boarding w/ phone in my pocket. Some ice droplets might have went into the pocket and melted. If it is comm board problem, do I have to replace the digitizer AND comm board?

    Please let me know. Thank You


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    Im' sorry for the delayed response

    Regarding to your question, the answer is no. You'll need to check the commboard cicuitry, because probably you'll find sulfatation and any degree of oxide.
    Cheers!

 

 

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