Hi, sorry for asking but I have a Hackrfblue which won't work on USB after a local power outage. The connected computer was hissing and the FB3 (gnd) filter was smoking.
I disconnected the PC and after that the PC starts fine, the Hackrfblue did not power up. I bypassed FB3 which was non conducting. The computer claims that a broken USB device has been connected. Smart computer that is :-( I noticed that the ESD protection chip had 5 ohm to gnd resistance on D+ so I removed that chip. Current is now 350 mA but the computer (tested on 2 computers) still gives the broken USB device message. I did measure that from VCC to GND is as low as 10 Ohm resistance. I have been studying the diagrams but I seem to miss where and how VCC is made from the USB +5 V power. Any hints on this ? Thanks for the support, Kind regards, Ben
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