| Electronics > Repair |
| High density non-destructive connector desoldering suggestions |
| (1/4) > >> |
| HalFoster:
I am needing to remove and the replace the connector shown below on a few (~5) boards without damaging either the existing pads or the adjacent circuitry. It is a 6-8 layer board and fine pitch traces - standard de-soldering methods seem risky so I am hoping that someone here has experience with similar situations and can offer advice. Thank you! Hal |
| inse:
One safe method without special equipment would be to cut off every pin as far away from the pcb as possible. Apply flux on the solder joints, put the pcb vertical and remove pin by pin with soldering iron and tweezers. Then carefully clean each hole with desoldering gun or wick. Time consuming but safest method for the pcb. |
| tooki:
I would mill a copper block to have a small well for each pin, as well as bored holes for some heating elements. Fill each pin well with solder. This becomes a giant desoldering tip that melts every pin simultaneously. (I have such things for DIP ICs, and my old job had them for some larger connectors too.) Or use a solder bath. |
| tooki:
--- Quote from: inse on January 06, 2025, 06:24:42 pm ---One safe method without special equipment would be to cut off every pin as far away from the pcb as possible. Apply flux on the solder joints, put the pcb vertical and remove pin by pin with soldering iron and tweezers. Then carefully clean each hole with desoldering gun or wick. Time consuming but safest method for the pcb. --- End quote --- The desoldering blocks* (and similar methods like solder baths) are even gentler, since there’s no risk of mechanical shock damage from snipping pins. *”Entlötstempel”, they are called in German. |
| inse:
I agree, but my proposal included the phrase „no special equipment“. Mechanical shock can be avoided by dremeling off the pins with a small cutting disc. It may be challenging to apply the block evenly over all the pins taking into consideration the size of this connector. Still the task of cleaning every hole remains. Btw, what‘s the problem with the connector? I didn’t notice signs of wear and tear. |
| Navigation |
| Message Index |
| Next page |