[time-nuts] Thunderbolt repair

[bjones0 at mindspring.com]

I had the same problem with my Thunderbolt shortly after I got it and the problem turned out to be the power supply had gone "bad" and the voltages supplied to the tbolt were way off (but close enough to give a ~10Mhz & 1pps signal).  I would suggest checking each pin on the plug and make sure the voltages close to spec.  (but check against ground.. as when my PS went bad I was still getting 24v across the +/- 12v lines but it was actually something like +18v & -6v so I was fooled into thinking everything was okay.

-Brian

-----Original Message-----
>From: Adam Feigin <awf at iis.ee.ethz.ch>
>Sent: Nov 1, 2010 8:36 AM
>To: time-nuts at febo.com
>Subject: [time-nuts] Thunderbolt repair
>
>Has anyone ever repaired a Tbolt which exhibits the "dead serial port" 
>phenonmenon ? I've seen a couple of people post about their Tbolts being 
>"dead" in this manner, ie the serial port gives no output, and doesn't 
>respond to any input, but the 10Mhz and 1pps outputs work. Seems a shame 
>to pitch it. Just wondering if anyone has managed to bring theirs back 
>to life, and if they did, how.
>
>
>
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