[time-nuts] Re: HP-10811B thermal fuse

[David G. McGaw]

Here is a discussion about this: 
https://www.febo.com/pipermail/time-nuts/2017-May/105193.html

73,

David N1HAC

On 1/20/24 5:29 AM, Taka Kamiya via time-nuts wrote:
> I seem to recall HP's official recommendation is to remove the fuse and substitute it with a simple jumper.  I think there is a bulletin for this.  (which I cannot find now)
> ---------------------------------------
> (Mr.) Taka Kamiya
>
>   
>
>      On Saturday, January 20, 2024 at 01:19:58 AM EST, John or Susan via time-nuts <time-nuts at lists.febo.com> wrote:
>   
>   The thermal fuse in my 10811B oscillator has opened. Troubleshooting
> results say that the oven is ok, but I do need to replace the fuse and
> cannot find any information about it. The manual says the Mfg. number
> was 2110-0617, and the HP part number was 10811-80008. I am guessing
> something on the order of either 1/2 A slow-blow or 1 A regular fuse.
> Can anyone provide any guidance as to the proper fuse? Also any thoughts
> as to why it failed would be appreciated. It is part of a home-brew
> GPSDO, mounted in a case right next to ventilation slots.
>
> John W2TX
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