Capacitors replacement on A600/1200

[jcarvalho]

Hi, you have little solder visible, it is normal, the Mobo doesn't have big pads. I now use the plier method, before that I started to pre-heat the MB around the cap to remove with 180C in the gun heat, after I rise to about 300-320ºC and move the heat gun around the cap until I can see the solder melt and then test if it can be lifted. I dont like the hot air method, the MB is stressed with heat and the pcb is not from the best quality. Another method is cutting the cap from the base using a small cutting plier, place the plier horizontally with the board, the cutting parts in the solder joints of the caps and close it , you will cut off the cap from the board, remove the plastic bottom after that . I use one like this http://www.ebay.co.uk/itm/Durable-E...134176?hash=item1ea0f07d60:g:F1UAAOSwPcVVlipK

Old thread but did not want to open new one as this is close enough... So I'm in need to replace caps on my Amiga 600. I've done plenty of smd soldering during the years but pretty much no de-soldering. After I read enough about pulled pads and traces when using improper techniques and due to fact that my rev1 board uses caps which legs I cannot just access using ordinary soldering station I decided to get hot air SMD rework station.

Now I have smd rework station. Too bad I found no youtube videos about desoldering electrolytic caps. All videos and tutorials are about desoldering ICs and resistors etc. Those caps, however are different as there are little solder visible. Not sure anymore if rework station will help me at all! I am worried that to get temperature of electrolytic caps high enough the plastic base will already melt or temperature of surrounding components will rise too high?

Sooooo, any tips? How should I proceed? Which temperature setting should be used and will plastic base handle it? Also when replacing audio caps plastic keyboard cable connector is nearby. I bet it can't take the heat either. Any tip, copper tape or something?

Thanks already! Ps. Yeah, I am planning to find some broken tech and practice with it first...

 

[paul1981]

Also when replacing audio caps plastic keyboard cable connector is nearby. I bet it can't take the heat either. Any tip, copper tape or something?

Thanks already! Ps. Yeah, I am planning to find some broken tech and practice with it first...

Kapton tape.

https://en.wikipedia.org/wiki/Kapton



P.S. I agree about rev.1 A600 motherboards... I've had three, and all three had very little or NO visible solder/pad to actually get your iron in on.