emoving the emmc ic is actually quite easy, what needs to be understood is the characteristics of the blowers that we have, each blower or steam solders have different heat settings.
for emmc ic glue:
1. first clean the glue on the edge of the IC emmc so that the components around the IC don't get lifted, use a 200 degree centigrade heat blower, in addition to removing glue, heating at 200 degrees also functions as a preheater, so that the pcb doesn't bloat because of the sudden heat.
2 after the glue is clean then add 350 degrees Celsius heat, then gently gouge at each end of the IC EMMC using a thin plate used by the LCD, the position of the lifting depends on the IC EMMC position whether there is enough space or not, if there is not enough space to move the first component that feels disturbing at the time of prying.
3. blower around the foot of the EMMC IC, and keep the blower away when it feels the IC EMMC is too hot while stopping the gouging, then the blower and the gouging again until the IC is released.
For EMMC ICs that are not glue:
how to set the blower to 300 degrees heat, moderate wind, then give the flux liquid around the IC, after the boiling flux liquid add the heat of the blower at 350 degrees, when the ic can be shifted, lift the IC emmc immediately.
5 сен 2019
