HiIs there a good technique for removing solder off of SMD chip pins after removal? that always seems like the longest most annoying step in the process when I salvage or reflash chips.
About removing solder off smd pins, best options is using good « tin soldering braid » around 350deg cel). Be careful using this technique ! Not recommended, but the most common.
using hot temp with smd chips can quickly destroy the chip or partially destroy it, removing the ability to write on it for exemple « , especially if you use hot air temp upper than 250/300 deg cel. Not a good option for me !
I use special alloy to remove smd chips (not the more cheap for sure), the « quikchip alloy » is the best solution to remove smd using very low temperatures and avoid to destroy anything : motherboard pads, eeprom chips (melting below 90deg Celsius and be « liquid » state for some seconds !).
First remove excessive tin on smd chip using braid, then put some good flux on them, then only, put allow on chip pins using classic iron, it easily melt around 150deg with airflow in 3/4 seconds and permit fast removing of smd chips.
I’ve tryed to remove original chip using classic method and I’ve issued the same situation : impossible to write on it etc..
Also use the correct adapter on your writer (8, 16 bits etc..) if not it will not be good.