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5c can't hold time and date

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  • Jessa_the_Professa
    replied
    I would not attach a chip with low melt. 250C doesn't really mean 250 unless you're using a thermocouple, but no--heat less than normal is fine, and low melt is fine for removal. I'd think you'd have to put a lot of heat onto the board to get the chip to melt from below. I usually put low melt on the joints carefully with an iron, then quick heat to pop it off. Then tin receiver pads with leaded, and solder on quickly with hot air a little less than normal. Touching crystal with the iron is a no go.

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  • golf r
    replied
    Originally posted by Jessa_the_Professa View Post
    For a 5c, the time/date problem is very classic for Y2 crystal failure. The crystal itself is very sensitive to heat. How did you approach changing the crystal?
    Hello,my approach to replacing is removing from a known good board ,i heated from bottom side when removing from donor board and re establishing using low heat solder paste of 250 deg. is 250 still to hot for the y2?

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  • Jessa_the_Professa
    replied
    For a 5c, the time/date problem is very classic for Y2 crystal failure. The crystal itself is very sensitive to heat. How did you approach changing the crystal?

    Leave a comment:


  • golf r
    started a topic 5c can't hold time and date

    5c can't hold time and date

    Hello,

    I have an iPhone 5c that cant hold time and date. I have replaced y2 crystal there is no physical damage to board, setting is correct

    any ideas be great
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