On 21 May 2006 03:54:08 -0700, email@example.com wrote:
|Dave Fawthrop wrote:
|> |Dave Fawthrop wrote:
|> |> |Ian_m wrote:
|> |> |
|> |> |> I repaired my early 90's microwave for all of ?4.50 from CPC a while
|> |> |> Basically went bang and blew internal 6A fuse. Replaced fuse just in
|> |> |> old age and bang blown again. It was the HV rectifier diode gone short
|> |> |> circuit (and probably taken out the capacitor protector), thus shorting
|> |> |> 2.5KV secondary, which is why the fuse blew. Also you need to verify
|> |> |> cap still works (capaciance meter) has say 10M internal resistance so it
|> |> |> self discharges. ?4.50 from CPC later, microwave worked fine. Yes you
|> |> |> 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.
Dave Fawthrop <dave hyphenologist co uk> Google Groups is IME the *worst*
method of accessing usenet. GG subscribers would be well advised get a
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