Hi The thermal fuses die on their own far more often than they die protecting anything. The fuse is there to provide safety is certain odd situations. The simple answer these days is to replace it with a piece of wire.
Bob > On Nov 30, 2021, at 12:05 PM, Larry McDavid <[email protected]> wrote: > > Do these thermal fuses fail spontaneously or is there a common cause? > > If the "heater" transistor mounting screws were quite loose, those > transistors themselves might have overheated and failed. But, a thermal fuse > should fail by high temperature... > > Sounds like progress, though. Cold OCXO means low frequency. > > Jared, I sent you a private email with some pictures; did you get that? > > Larry > > > On 11/30/2021 8:03 AM, Jared Cabot via time-nuts wrote: >> Well, I found it, the thermal fuse is open circuit. >> If I briefly bypass it with a jumper wire, the oven pulls the expected >> current. >> Looks like I need something that will trip at roughly around 115C, rated to >> 1.0A >> (HP Part number 10811-80008) >> Hopefully I can find something in Akihabara to make it easier to get my >> hands on ASAP... >> Jared > ... > -- > Best wishes, > > Larry McDavid W6FUB > Anaheim, California (SE of Los Angeles, near Disneyland) > _______________________________________________ > time-nuts mailing list -- [email protected] -- To unsubscribe send an > email to [email protected] > To unsubscribe, go to and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] -- To unsubscribe send an email to [email protected] To unsubscribe, go to and follow the instructions there.
