As I reported the last time this subject came up, or maybe the time before, the only time I had an open thermal fuse was in a 10811 that had an open thermistor. I was able to replace that and get the OCXO working, but if the fuse had been replaced with a wire link I'm sure the entire oven would have been toast.

There have been two types of fuse fitted, all I those have are the type that can be fitted with the plug in axial panasonic type, less than a dollar from Digikey. The older ovens had a different type but I imagine it's similarly easy to replace.

All my 10811s have the higher temperature Panasonic fuse fitted and I sleep well at night...

Dan
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