help for soldering U3 iphone 5 – bundle of problems ! old iphone set problem

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help for soldering U3 iphone 5 – bundle of problems ! old iphone set problem

On January 25, 2015, Posted by , In iPhone, With Comments Off on help for soldering U3 iphone 5 – bundle of problems ! old iphone set problem

hello


I tried welding U3 (problem Along with power key and home key) I rehearsed all the 6 pin out Along with the tin Along with lead, I tried Along with different temperatures from 280 degrees to 330 but can not weld does not stick.
sorry for the trivial question but if you have a suggestion, thanks.
Along with Apple I make a big effort Along with the welds have any suggestions?
thanks again

No Comment so far:

  1. newComer says:

    Hi, I changed U3 on an iPhone 5 yesterday. I used a hot air station Along with 280°C and a soldering iron Along with 320°C.

    For removing and installing the ic I used the hot air, for cleaning the solder pads and balling the new ic I used the iron.

    Did you use a good flux?

    Regards,
    Torsten

  2. newComer says:

    hi bro
    i think my flux is bad quality ..is impossible i ve used hot air for remove ic to 320 ° ..much high temperature .
    for you is the flux ? sorry me but im a beginner.
    regards
    Orlando

  3. newComer says:

    kindly explain your problem exactly. Have got the problem removing the u3 or soldering the new ic?

    Along with hot air you must be carefully and patient. Cover the simcard reader and the areas next to the ic Along with kapton tape or aluminium foil and use plenty of flux and take your time. It takes some time until the solder begins to weld.

    Regards,
    Torsten

  4. Wela says:

    hello bro
    the problem is the removal and welding ..I also performed reballing on ic but when I go to weld it fails to knit, I have to bring the temperature is too high and I assume that i have burned the ic.
    To be able to weld it I have to bring the temperature to 350 ° C, too!
    In your opinion, can be the flux?
    thanks bro

  5. TechWorld says:

    Yes, I Think this can be bad flux, bad solder or just dirt in this area. First, you should proper clean this area Along with 99% isopropyl alcohol and then use good flux (I use Amtech NC-559 flux paste).

  6. TechGuru says:

    Thank again Torsten
    my doubt is Amtech flux nc 559 seems to cost too little..i ceck su e***y 100 gr us dollar 15.99 ..

  7. julianz says:

    Be sure, you purchase the flux from a seller you can trust. There are many bad chinese copies of Amtech flux in the web. I bought mine from Amazon and I am sure its the original one. I paid 18€ for 100g.

  8. ExpertBuddy says:

    Ok friend
    i purchase original flux 559 and Along with hot air 370° it s all ok ! work perfectly..
    do not tell you more thx because otherwise banned me ..title=roll

  9. julianz says:

    Okay, but for future: 370° is much too high in my opinion.