10-04-2022, 07:26 PM
(10-04-2022, 01:51 PM)someone Wrote: .. If you are, stop right now.Someone has some very good points, but this may have come over a bit strong and I'm sure that was not the intention.
Lifting pads does usually mean too much heat, or heat applied too long.
Motorised vacuum desoldering stations are great & well worth the investment if you are doing repairs on a regular basis, but some people can't justify
the expense. Manual vacuum desoldering tools are o.k. but care needs to be taken with heat as mentioned and this is the same with desoldering
stations as well. The drawback of the manual vacuum desoldering pump is that you have to get the iron and tip of the pump over the joint you are trying to
desolder close enough to get an effective vacuum draw of the molten solder. This can lead to pressure on the tracks from the iron, especially when the 'recoil'
of the pumps internal spring is triggered.
When repairing circuits with delicate tracks, it is far easier and kinder to the board to cut the pins of a device (usually as close to the component body
as possible) with fine sharp cutters and take the remainder of each pin out one by one with tweezers and the soldering iron.
Then once all pins have been removed, you can clean up the pads / holes by applying a little fresh solder and using the vacuum desoldering tool
of your preference. Desoldering braid is never a good idea for this purpose.