On 9/14/2010 1:23 AM, John Miles wrote:
As Bruce suggests, you'll want to peek inside to see that you
really do have
a 10811 oscillator. If so, then it sounds like the thermal fuse
(F1, inside
the 10811) might be open.
Just short it out, or if you like, put in an NTE part with a similar temp
rating. It serves little or no useful purpose.
-- john, KE5FX
I hate to disagree with John who knows a heck of lot more than I ever
will, but in this case it will protect the oven from cooking up if the
control circuit fails with the heater full on, which can happen.
I did have a 5370B with a 10811 that had a bad thermistor in it as well
as an open fuse. I'd guess that's why -hp- fitted it.
But yes, the thermal fuses can and do fail open for no good reason,
and it sounds like this has happened here, but I would not recommend
shorting it out permanently.
Dan
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