Question about GE JVM1440 Microwave Oven
Just tested the diode, transformer, capacitor, and magnitron in my GE jvm1441bh. Everything checks out but the diode.
The gallawa website says to set the ohmeter to read ohms @ a scale of R X 10,000 or higher. My meter just has one setting of 4000 ohms, which I suspect is just an auto range of 0 - 4000, so I'm afraid it isn't capable of reading resistances in the 50,000 - 200,000 range.
If that's the case is my multimeter simply providing a bad reading for the diode? It's reads 10 - 11 ohms across the anode/cathode.
Sorry for the ignorance, just not too familiar w/multimeters.
You cannot check a microwave diode with just a mutli meter . you have to make a test jig take a 9 volt battery and a meter with dc volt scale set up the meter just like you would test a 9v battery .with me so far ? now remove one lead from the battery and insert the diode between the battery and the test lead .......take a reading . now reverse the diode take a reading ........ i just tested a diode before writeing this and this is what i got my battey volts where 9.2 v whith the diode inserted i got 7volts . reversing it i got .02 volts dc . a diode is a one way valve and mine is good because it passed curent only one way ...yours should be about the same ....... if you understand this please leave me 4 stars ! i even went out in the shop and tested a diode for you just to make sure my answer was correct
Posted on Mar 07, 2009
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