***somehow my earlier answer was eaten by the Forum dog, here it goes again.
It actually fits halfway between posts 29 and 30***
I can not believe you are a Service Tech and don´t have *one* Zener, any voltage, on hand.
You should have at least 15V zeners, the most used value out there.
If you need one and don´t have it it´s the most expensive Zener on Earth: 15 cents for the part and U$7 postage, plus 3 to 7 days wait.
Same for any other part.
Ok, you have a dead Multimeter.
Ok, what do you get if you reverse the diode?
+ to cathode through same 1k resistor, - to anode.
EDIT
The last test maybe.
The first one not at all:
again:
the very same diode that shows 0.7V forward biased and we are waiting fo the reverse bias test.
It actually fits halfway between posts 29 and 30***
Originally posted by Randall
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You should have at least 15V zeners, the most used value out there.
If you need one and don´t have it it´s the most expensive Zener on Earth: 15 cents for the part and U$7 postage, plus 3 to 7 days wait.
Same for any other part.
With a 1N4002 in diode meter mode, I see 0.5v one direction, 0v the other direction.
With power supply + to 1K resistor, other end of 1K resistor to diode anode, diode cathode to power supply -, I get 0.7v across the diode.
+ to cathode through same 1k resistor, - to anode.
EDIT
Your last test shows things as they should be
The first one not at all:
again:
With a 1N4002 in diode meter mode, I see 0.5v one direction, 0v the other direction.
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