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Re: USB Device not recognized .... another one #qmx


 

Rick,

Great to hear about your success. However................

Here is a little more about the USB-C connector. The connector is designed around 8 pins and the shields. The connector is designed to accept a USB-C plug which can be plugged in right side up OR?upside down. The connector has 2 rows of 8 pins? on both the top and the bottom of that center insulator. Of course, one goes left to right and one goes right to left ......makes sense. I believe that Hans wired identical pins together between the 2 rows. This would increase the probability of making a connection to the few pins actually used but it does not fix the problem.?

I even saw a picture of someone who had added 16 solder balls to his USB-C connector.? However, you can't see how well the solder has wicked to the very short pin, so maybe.

A much more solid connection can be had with the "toothpick and flux technique" described in my other note. That way you can SEE to solder wicked from the pin to the via barrel. When I examined my kit USB-C connector the 16 pins are all helter skelter inside the via barrels. Some look like they picked up a small dab of solder out of the plated barrel, some were touching, some were not. Talk about "iffy connections". Manufacturers typicall do not use solder paste screening on PIH parts. No wonder there are multiple? USB-C download tries, may require a new (flipped) USB-C plug, may require a little connector wiggling, etc. The net is that it may have an "iffy" contact and may fail later.?

A GOOD, much more solid, connection can be had with the "toothpick and flux technique" described in my other note.?

73 Kees K5BCQ



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