Desolder Cruise control on ebike CA controller
- Thread starter Lori
- Start date
If you mean that the CR is two pads bridged by solder, there are a couple of options.
If the solder is not too thick, and the spot is easily accessible without tall components around it, you can use a razor blade, utility knife, or Xacto-style penknife and cut thru the solder, so it is disconnected. Or thru the trace leading to the pad, on either side.
If it can't be cut that way for whatever reason, then an easy way to remove it without buying anything new for the job (presuming you already have a small soldering iron and flux-core/rosin solder) is to take some spare thin copper wire with many fine strands, and strip a little insulation from one end. Hold the rest of it a ways away from that point, as it will get hot during this operation, and place the bare copper right onto that pad. Take your tinned and heated soldering iron and press it's tip down onto the copper, into the solder bridge, and the copper should melt the solder into it, wicking it up and clearing off the pads.
It might require a bit of flux or pre-solder on the copper wire to make it start wicking the solder off the pads. Flux you probably dont' already have laying around, except inside solder. You can get some of it out without boiling it or melting the solder by heating it up with the barrel of the soldering iron held near to but not touching the solder, with the tip of the solder touching the wire you want the flux on.
If the solder is not too thick, and the spot is easily accessible without tall components around it, you can use a razor blade, utility knife, or Xacto-style penknife and cut thru the solder, so it is disconnected. Or thru the trace leading to the pad, on either side.
If it can't be cut that way for whatever reason, then an easy way to remove it without buying anything new for the job (presuming you already have a small soldering iron and flux-core/rosin solder) is to take some spare thin copper wire with many fine strands, and strip a little insulation from one end. Hold the rest of it a ways away from that point, as it will get hot during this operation, and place the bare copper right onto that pad. Take your tinned and heated soldering iron and press it's tip down onto the copper, into the solder bridge, and the copper should melt the solder into it, wicking it up and clearing off the pads.
It might require a bit of flux or pre-solder on the copper wire to make it start wicking the solder off the pads. Flux you probably dont' already have laying around, except inside solder. You can get some of it out without boiling it or melting the solder by heating it up with the barrel of the soldering iron held near to but not touching the solder, with the tip of the solder touching the wire you want the flux on.
Amgerwolf. Thanks a million for the advice. I will give it a try. On the opposite side from the wires is where there is a glob of solder that looks like it bridges the pads. I will try to remove it with a utility knife or something small. If that fails I will try the copper wire wicking procedure. I do have a soldering iron, flux etc.
Thanks Again,
Carl's Bad Carl
Thanks Again,
Carl's Bad Carl
Just be careful not to *pry* at it with the knife, and only *cut* down into the solder. Otherwise you may rip traces off the PCB, and then have to glue them back down so they don't peel up worse later and short stuff.
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