- Joined
- May 23, 2018
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- 182
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- 421
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- Other International
Yesterday I received the hot air solder tool and yes it works 
Have the impression though that my solder paste is not the best, thick and doesn't stick very well to the PCB. This improved after I put Flux on the PCB and then the solder paste.
The first trial failed as I forgot to solder the edges as I explained before and the temperature of the hot air station was too low. The chip moved and fixated wrongly. Thereafter I couldn't move it anymore (Have to see if I can remove it completely and use it again).
Next try I fixated the edges with a normal solder iron and verified the position with a digital camera. This took most of the time to get it really aligned although I shifted it downside but all connectors of the chip where on the PCB wires, see below. You can also clearly see the right connector soldered normally. I had to clean the PCBA with alcohol after the hot solder paste melted, you can see the remaining brown stuff under the housing and between the pins. I didn't put too much solder paste on the pins being afraid of short-cuts, could have used a little more however, that's learning by doing.
Verified all connections between chip and PCB and possible short-cuts, all ok

Have the impression though that my solder paste is not the best, thick and doesn't stick very well to the PCB. This improved after I put Flux on the PCB and then the solder paste.
The first trial failed as I forgot to solder the edges as I explained before and the temperature of the hot air station was too low. The chip moved and fixated wrongly. Thereafter I couldn't move it anymore (Have to see if I can remove it completely and use it again).
Next try I fixated the edges with a normal solder iron and verified the position with a digital camera. This took most of the time to get it really aligned although I shifted it downside but all connectors of the chip where on the PCB wires, see below. You can also clearly see the right connector soldered normally. I had to clean the PCBA with alcohol after the hot solder paste melted, you can see the remaining brown stuff under the housing and between the pins. I didn't put too much solder paste on the pins being afraid of short-cuts, could have used a little more however, that's learning by doing.
Verified all connections between chip and PCB and possible short-cuts, all ok


) but I will plug one of my RW8's in when I do and see what happens.

