The two boards I saw had an event on the USB 5V line, not the data lines. Almost everything connected to the USB 5V line was toasted. So the failure modes would be different depending on the actual event. One thing is for sure: be sure everything in the shack is bonded so that you don’t get a ground bounce. That is sure to take out lots of stuff.
Ken K6MR From: Dr. William J. Schmidt<mailto:[email protected]> Sent: Sunday, November 28, 2021 06:38 To: [email protected]<mailto:[email protected]> Subject: Re: [Elecraft] [POSSIBLE SPAM] Re: [POSSIBLE SPAM] Re: Need K3 Board The number of parts zapped by a lightning strike is impossible to determine in advance. The more ground paths you have (USB cables, Aux cables, audio cables, etc.) the higher the probability of higher part mortality count. However, in every when only the USB cable was connected, I just had to replace the TUSB2036 and the USBLC6-2 ESD protection packs. Your mileage may vary... lightning of course. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email: [email protected] -----Original Message----- From: [email protected] <[email protected]> On Behalf Of Ken K6MR Sent: Saturday, November 27, 2021 1:49 PM To: [email protected] Subject: [POSSIBLE SPAM] Re: [Elecraft] [POSSIBLE SPAM] Re: Need K3 Board On 11/27/2021 9:30 AM, Dr. William J. Schmidt wrote: > I have the rework equipment in my RF lab to fix these boards and have done so on many occasions (there are basically only two parts that can go bad on the USB side... the ESD diode pack and the MAX-USB chip, both of which are surface mount packs that can easily be removed). I’ve only repaired two of these boards, but it was way more than two parts. The ones I fixed had the hub, voltage regulator, switches, and one other device get toasted. All surface mount, so easy fix once the dead parts were identified. Cheap too, I think it was no more than $10 per board parts cost. Ken K6MR From: David Gilbert<mailto:[email protected]> Sent: Saturday, November 27, 2021 09:17 To: [email protected]<mailto:[email protected]> Subject: Re: [Elecraft] [POSSIBLE SPAM] Re: Need K3 Board I think that's an excellent offer. In the absence of Elecraft supporting these older boards (as I stated in my first post, when I asked Elecraft to repair my KIO3 they declined), it would be great if we could compile a small database of people like yourself willing and able to do proper repair ... for a reasonable fee, of course. If somebody was willing to do this on a regular basis, I suspect that many of us would be willing to simply donate older/excess boards. I have a couple that I would. 73, Dave AB7E On 11/27/2021 9:30 AM, Dr. William J. Schmidt wrote: > I have the rework equipment in my RF lab to fix these boards and have done so on many occasions (there are basically only two parts that can go bad on the USB side... the ESD diode pack and the MAX-USB chip, both of which are surface mount packs that can easily be removed). If you have bad KIO3B boards, please sell them to those of us that can repair them and keep them in stock for future needs. > > > Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ > PJ2/K9HZ > > email: [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] -- This email has been checked for viruses by AVG. https://www.avg.com ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
