And I will bet the smell is as bad as the larger 0106 oven. As I say its in a sealed bag and not sure how I will recover it. Need the windows open. The suggestion of buying a replacement is the best even if you do need to buy 2-3 to locate a good one. Regards Paul
On Wed, Dec 1, 2021 at 6:13 AM Askild <[email protected]> wrote: > Hi, > > Just a little warning. > Included are some pictures of a 10811 where thermal fuse protection have > not functioned. > I do not know why, if the fuse did not work, or somebody replaced it with a > wire, as this was in a HP 8663A that I found in a recycling bin, and I do > not know the history. > > > Regards, > Askild > > > > On Tue, Nov 30, 2021 at 8:34 PM Bob kb8tq <[email protected]> wrote: > > > 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. > > > _______________________________________________ > 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.
