Great info Arthur - exactly what I was looking for. Thanks for the tip on the chip version.
My only question - what does one do with 50 TBolts? Hopefully you won't come up with a good enough reason for me to justify buying more!! Many thanks, Brent On Sat, Apr 23, 2011 at 9:29 PM, Arthur Dent <golgarfrinc...@yahoo.com> wrote: > "One of these units appears to have an onboard temp > sensor that is dead - the temp just reads -55.0C all the > time. This is the little Maxim/DallasDS1620 chip, which > I can replace, but I had a few questions first." > ++++++++++++++++++++++++ > > I've had about 50 Thunderbolts and at least 5 of them had > a defective DS1620 chip. About 3 more were from late > 2004 or early 2005 and had the "E" revision chip that > displays the temp in about 3/4 degree steps. Of the ones > that failed the common failure mode was to display > -54.999 degree C even though I'm sure it wasn't quite > that cold in my shop. ;-) > > If you replace the chip just make sure that the replacement > chip is a "D" or "C" revision if you want the Lady Heather > graph to look nice. > > -Arthur > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.