11

That's a horrible attempt at soldering, and if you paid a company to do that you really should take it back to them and tell them to redo it properly. I can't believe that anyone who knows how to solder looked at that and thought it was OK. The problem you're seeing is that the solder applied to the pins of the inductor has barely flowed onto the PCB and has ...


2

The connector looks to be an SMT type similar (but maybe not identical) to this JST PH series part: The two brown squares are where the pads were that provided mechanical support for the connector. They are now gone (still attached to the connector since the glue that holds the copper on was weaker than the solder). The two pins you can see in my photo are ...


2

Your connector is still there. It's attached to the cable, but ripped off the PCB. That's why you've got copper red-brownisch rectangles at the bottom of your plastic piece, and missing on your PCB. Since it's ripped off, there's noting to solder it on to, so: Is it possible to solder directly to the motherboard? Not in general. You will have to figure out ...


1

I'm surprised no one has mentioned magnet wire strippers. They're handheld motorized tools that give you a perfect strip with a sharp edge every time. They're adjustable over a fairly wide range, the ones I can find all seem to strip magnet wire between 0.3mm to 2.5mm in diameter. That won't help you if you're using 30 gauge or smaller magnet wire, but 28 ...


1

I use paste solder, a SMD rework hot air gun with a small nozzle and a soldering iron to solder center pins in coax connectors (for connectors that do not allow crimping). Fill the pin with paste, apply extra to the wire near the pin, heat up the pin and conductor, then hit the conductor (not the pin) with a hot iron and some additional solder to complete ...


1

I would certainly go for a bigger pad both to make it easier to get the heat in there and make a larger solder joint that can hopefully take the stress better. I'd say a pad size about 3x the hole size is preferable. Sometimes space constraints mean you can't use pads that large but i'd certainly go for them where possible. Thermal reliefs are a double edged ...


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