Here in Europe the time now is late night, anyway there is also U15: a LinearTechnolgy LT2105 or LTC2105 but I can't find nothing... maybe it a marking code and not the actual part number. Maybe a linear regulator, google says LT2105-5.0 but on the Linear site it doesn't exist.
On Wed, May 9, 2012 at 12:45 AM, Magnus Danielson < [email protected]> wrote: > On 05/09/2012 12:33 AM, [email protected] wrote: > >> Hi Magnus, >> >> On 05/08/2012 11:58 PM, Bob Camp wrote: >>> >>>> Hi >>>> >>>> The first thing to check is the soldering job on the DB-9 connector. >>>> Second thing to check is the RS-232 level translator IC. (RS-232 in >>>> should create TTL etc) >>>> >>> >>> Does not explain why the OCXO remains stuck as if it was untrained. >>> >>> I suspect that the CPU never starts or hangs early. >>> >>> Cheers, >>> Magnus >>> >> >> The big Trimble IC (U2) close to the RS232 port, is also noticeable colder >> to a finger tip on the faulty unit, compared to a working unit. >> > > OK. As Azelio proposes, check the 3,6864 MHz clock. > > If you can find the reset pin, then that too. > > Cheers, > Magnus > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
