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Thank you Thomas for all this information, but I have just received from a reliable source the value of the destroyed components. I am attaching the corresponding pdf with the value of these components. the ULCE0505A015FR is an RF suppressor as you said in your message. The resistor box is 0603 and the RF supressor box is 0402. I have ordered the components and am looking forward to troubleshooting the Tx. 73 Mark

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De?: [email protected] <[email protected]> De la part de Thomas via
贰苍惫辞测é?: lundi 20 janvier 2025 23:43
??: [email protected]
Objet?: Re: [xiegu-x6100] Port USB DEV

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Hi Marc,

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When I look to the high resolution pictures

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and the specification for USB High-Speed

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the resistor value to GND is 15kOhm and to 3V3 1,5kOhm.

I guess the X6100 is a USB 2.0 High Speed and therefore I assume the copper area is 3V3 and the via is GND. May you make a measurement to crosscheck this.

The missing black device above is not a capacitor, it is a ferrit beat as filter for rf noise on the +5V Supply line going to the host device. You can use BLM18AG102SN1 or similar.

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Hope this helps to repair your unit!

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BR,

Thomas