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Thread: LCD 4x40 contact points melted away?

  1. #1
    Newbie
    Join Date
    Apr 2000
    Posts
    3

    Unhappy LCD 4x40 contact points melted away?

    I tried soldering the wires to the lcd panels and it seems like it melted? i didn't think that the metal would have such a low melting point so i did not give this a thought, but it seems like this is what happened becuase i don't see the contact point anymore. my question is , is it possible to melt away the contact points if i use a 25 watt soldering and i leave it on the points for at most 2 min? i don't even think i left it on that long at times.. if so.. is there anyway to replace that panel, which im assuming is the hd44780 controller? do anyone else have any ideas how i can fix the lcd? any help would really be appreciated... thanks..

  2. #2
    Newbie
    Join Date
    Apr 2000
    Location
    Cedar Grove, IN
    Posts
    36

    Post

    They didn't melt away, you probably cooked them until they came off the board and stuck to your iron. Soldering takes some practice; keep the heat to a minimum, use a clean tinned tip, and pre-tin the pad and the wire. Hold the wire on the pad with one hand, hold the iron with another hand and when the iron touches the wire/pad feed in a little solder with your third hand.

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