|Dave Fawthrop wrote: |> On 19 May 2006 07:48:16 -0700, snipped-for-privacy@care2.com wrote: |>
|> |Dave Fawthrop wrote: |> |> On 19 May 2006 05:58:29 -0700, snipped-for-privacy@care2.com wrote: |> |>
|> |> |Ian_m wrote: |> |> | |> |> |> I repaired my early 90's microwave for all of ?4.50 from CPC a while back. |> |> |> Basically went bang and blew internal 6A fuse. Replaced fuse just in case |> |> |> old age and bang blown again. It was the HV rectifier diode gone short |> |> |> circuit (and probably taken out the capacitor protector), thus shorting the |> |> |> 2.5KV secondary, which is why the fuse blew. Also you need to verify the HV |> |> |> cap still works (capaciance meter) has say 10M internal resistance so it |> |> |> self discharges. ?4.50 from CPC later, microwave worked fine. Yes you can |> |> |> operate it with the lid off, the microwaves are contained inside, |> |> | |> |> |if the cooking cavity is rusted, massive leakage can occur with the |> |> |cover off. The tester's head will typically be close to this source. |> |>
|> |> In the RAF c1960 I worked with Magnetrons, Klystrons and the like. |> |> No obvious problems to any of my mates. |> | |> |Presumably you and/or they were trained, or the equipment was designed |> |to be safe with whatever you were doing with it. |>
|> You presume wrongly, never heard *one* word about any risks. |> The Urban Legend was that it was a good idea to spend a day in front of the |> transmitter before having leave with your girlfriend ;-) | |I'm still presuming it was 'designed to be safe with whatever you were |doing with it' probably because it was not 2.45GHz. The main danger in |working on domestic ovens is not from the magnetron.
You missed "In the RAF c1960" If you did your 2 years National Sevice without obvious problems, that was safe enough. In the late 1970s, one only had to make industrial processes as safe as "reasonably practicable" I was a Safety Rep at the time, and knew exactly happened.
The world has gone mad now, with safe being defined as without risk :-( Irrespective of the fact that you take risks by getting up in the morning and greater risks if you stay in bed.