> OK, I tried it again and detected some signal at the hinges (needle
> deflecting ~1/3 of the way).

I'd say "1/3 deflection" is moe than "some" !!! :-).
And you can probably get 100% deflection with intelligent positioning.
You seem to have a nice slot radiator as suggested - just a shorter one than 
could have been.

Sounds like it's working about right AND has found what you are looking for.

> The thing that confused me, is that the signal
> is not constant -- the needle deflects once maybe every 2 or 3 seconds.

As adumbrated / noted by me and others, ovens set their power by PWMing at 
0/100% power with a cycle time of typically 10 to 20 seonds. That's SLOW PWM 
:-).
So you can use it to advantage to not be there when the powe ris.

>> If you do this on low setting and wait until the
>> long off part of the cycle (you can tell by the sound it makes) then you
>> can
>> do this with safety.

> However, the leak is directed straight at the media PC. Should I try using
> metallic tape to seal the crack?

Or turn it 90 degrees temporarily to see what happens. Or place a metal 
sheet in front of the slot temporarily. Noting that you now have a mirror 
and may have a "lens" :-).
Standing at a few feet remove helps heaps.

>> If no response at all then the brave/foolish could try cracking the door
>> as
>> far as the interlocks will allow and seeing what comes out. I'd try that,
>> but carefully. Easing the door open with the oven running will show you
>> where the cutouts cut in.

>> If you do this on low setting and wait until the
>> long off part of the cycle (you can tell by the sound it makes) then you
>> can
>> do this with safety.

> Sorry, call me a coward if you want, but this just reminds me of the sort 
> of
> thing that happen prior to the criticality accidents.

Welcome to the club. We cowards tend to have longer lives. I'm seen as a 
risk taker but I always try and take my risks with as much understanding as 
possible - I don't see it as risky - rather intelligent dancing. eg if your 
oven when set to 10% power level hums for 2 seconds and then makes far less 
noise for 18 seconds then repeats ad infinitum, you can guess that it is 
powering on during those two seconds. Placing the meter at the door hinge 
and observing from a distance will help confirm this. If so you can then do 
apparently risky things in the middle of that 18 second block. The designers 
MAY catch you out, and cracking the door in the midst of a cycle MAY cause 
the oven to emit briefly as the in\terlocks shut it down (there's no 
accounting for software) but odds are the risk is very low. YMMV. Let it do 
so intelligently.

An alternative to all this is to complain to the supplier. And/or check 
another nominally identical oven and see if it is as badly affected.

Or add shielding, as you say.

Aren't you glad you bought the meter? :-)



             Russell

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