This maybe good! The problem maybe in the USB module. Can you check the USB connector connections using a magnifier?
You can also measure the connections to the socket if you know how.
USB D+ / D- are directly wired, correct?
I could messure a direct connection between D+ of the USB cable and pin 5 of the IDC connector.
There is no connection between D- and pin 4 of the IDC connector.
D- arrives at the usb connector of the usb client. It seems that the wire is broken at a plated-through hole.
Please confirm that D+ / D- are directly wired. If so, I could solder a small wire at both connector pins.
Yes directly wired. It is probably bad connection on the USB connector.
I’ll check it tomorrow morning with a good magnifying glass.
The problem was at the first via after the usb connector. I solved the problem with a tin wire and soldering.
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