I've only got the front control panel open. I need to strip the casing to get at the magnetron if it is in there. Can you tell me where the diode I'm looking ? I've seen a part that is described as a diode, but seems to have a cable 'tail'. Is that what I'm looking for, please?
Daniel, I've found what you described, it looks like a high wattage resistor. There is another in parallel across the cap. I'm getting a reading of about 97 ohms both way on the diode.
OK, I've been exploring further and found the writing on the diodes (it helps to know which way round they are!), I've also checked the one across the cap. It's completely gone! There was no charge on the cap which made me explore more. It looks like the pair have gone. The cap looks ok, but I'm only using a digital meter.
I've reconnected the diode to earth, then tried across the mag to earth and I'm getting exactly the reading of the diode, Just tried across the mag and getting a near full short circuit. I don't know what I should read across a magnetron. Can you help there?
I'm fairly confident that the diode has gone, as it is only showing about 98 ohms to earth when the diode is reconnected and it is the same both ways. I've got a moving coil meter I can give it a second go with, but not got a megger.
My wife is asking:
Would you fix it or replace it (it's 13 years old)?
If it was replace, do you know what would fit the same size (built in) hole?
Would you go or another brand? (That's me asking)
Thanks, ***** ***** been a great help. It's the 1st time i've used this site, but I'll certainly be back if I need help again.