I recently purchased a clone 858D SMD rework station and would like to get familiar with de-soldering and re-soldering SMD chips.
I was able to de-solder fine, but when trying to re-solder I can't seem to get all the legs to solder onto the PCB. My question is, what could be the cause of this?
Here's the steps I took before re-soldering:
- Added flux to the pads on the PCB
- Cleaned up/added solder to the pads
- Add a bit of solder to the legs of the SMD chip
One big thing I noticed is that before re-soldering, the chip didn't sit flat at all on the pads.
This was the PCB before soldering:
The outcome after soldering: