Just built up a tda7294 pcb which was very similar to previous revision pcb.
I powered it up and it just shorted out the rails.
I suspect I mounted the tda7294 too low down and the upper pins touched the lower pins and blew it up.
Anyway I dreaded the thought of removing it, I expected it to be a real pain.
So what I did was cut all the pins down to the pcb with narrow wire cutters.
Then I heated up one pin at a time and flicked the pcb to get the pin out.
Worked a treat, just a little heat on the pin then a sharp flick of the pcb and it was out.
I then just had to suck out the last of the solder down the vias.
I gently heated the via on the edge then with solder sucker vertical I sucked out remaining solder. This worked very well.
What I thought would be a nightmare wasn't bad in the end.
The heat and flick is great technique but wear glasses just in case !
I powered it up and it just shorted out the rails.
I suspect I mounted the tda7294 too low down and the upper pins touched the lower pins and blew it up.
Anyway I dreaded the thought of removing it, I expected it to be a real pain.
So what I did was cut all the pins down to the pcb with narrow wire cutters.
Then I heated up one pin at a time and flicked the pcb to get the pin out.
Worked a treat, just a little heat on the pin then a sharp flick of the pcb and it was out.
I then just had to suck out the last of the solder down the vias.
I gently heated the via on the edge then with solder sucker vertical I sucked out remaining solder. This worked very well.
What I thought would be a nightmare wasn't bad in the end.
The heat and flick is great technique but wear glasses just in case !
I agree. Whenever you are convinced the IC is dead, remove the IC body by cutting all leads one-by-one. Then, remove the remaining parts of the leads one-by-one with a soldering iron. Less stress on the PCB pads.
I have major problems finding good desoldering wick.
Modern pcb's seem to be more tolerant to removing components, I can only guess the glue is better. We used to have terrible trouble in the 1980's with solder suckers sucking off the pads.
I use PCBWAY and JLCPCB and they are usually very good.
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