thread top ad

Collapse

Announcement

Collapse
No announcement yet.

Underfill on newer boards - Dynasolve 225

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Underfill on newer boards - Dynasolve 225

    Hi.

    Just wondering if anyone has explored the possibilities of cured underfill removal, using organic solvents?
    I read a post suggesting Dynasolve 225 https://www.dynaloy.com/products/dynasolve-225

    I mght give this a shot.

    Other suggestions are to heat the chip / PCB area to well above liquidus and twist off the chip. This does not sound too inviting without some expirience of how under chip temps track with measured surface temps, with a thermocouple, on the underside of the board.

    Although it does seem to disintegrate nicely with a 380°C iron tip, I'm not sure I want to use up T-30 tips trying to jam them under chips to remove underfill


    Anyone else got any suggestions to try out?
    How are you removing this crap?
    Last edited by G.Beard; 08-08-2018, 08:15 PM.

  • #2
    The solvent is probably not going to works as it cannot penetrate under the chip and it will take forever to dissolve.
    I just heat it up and carefully pry the chip off. Only chip so far that sometimes needs replaced that is underfilled on MacBooks is the CD3215.

    Comment

    thread bottom ad

    Collapse
    Working...
    X