Anyone got some parts left ovee from scrapping microwaves? I will pay you back for postage!!
They don't cost that much. Heck, I can get a whole new magnetron for less than that. I've got a few kicking around here but it will be over a week until I can ship you one. If you don't get any other offers, post back on Monday after Thanksgiving and I'll send you one. It's helpful to know what the connections coming off your diode are. That's high voltage there and not real forgiving to poorly made splices.
Are you SURE it's just the diode?
Volvo Farmer
But, keep in mind the power rating: for 1000W-microwaves, 550mA diodes are fine. If you microwave oven has more than 1000W (RF!) power (not electrical input power), you'll need bigger diodes. I.e., the replacement diode should have the same or better rating as the original one.
All the microwaves I've repaired so far (2) had a broken diode. Sometimes they're built into the 1u-cap as one unit. Even if they are, an external diode will usually work too (provided the cap is still ok).
Be careful measuring the 2kV high voltage; most DMMs can handle 700V max.
Succes.
And I've already called repair shops, with no luck.
The oem diode has no markings to give its rating. But the capacitor IS 1200v.
You're saying a 500mW one would work??? Really?
Not 500mW (.5W), 550 milli-Ampère. For a 1000W-microwave.
My replacement diodes are 550mA at 12kV (just checked)
The marking on them:
HV05-12 DC
It's a generic, brandless replacement diode. But, my current combination microwave (dumpsterdived, of course...) is working for 6 years with it now.
If the output power of the microwave is known, you should be able to determine how big the diode should be. If the microwave is less than 1000W, a 550mA diode should work.
I suggest to find a dumpster microwave of same rating and replace the diode or even the diode/cap unit (if that's working in the dumped one).[ Parent ]
Less than seven bucks for the one you need.
[ Parent ]
On one end is a loop, screws into the frame. Other side is a crimp-on connector - the kind that's made to slip onto a flat blade on the Capacitor.
As for it being the diode, I get a buzzing from the transformer, no microwaves, and the diode reads 50 Ohms (not k Ohms) in BOTH directions.
If you really can't find any, let me know. I'll send one. But use only as a last resort please. I've looked up the contact details of my (Dutch) supplier but he's not on-line, LOL. An old-style repairshop; the guy is well into his 70s and has a repairshop like every town used to have one, back in the old days...[ Parent ]
If You can not find one You can place 6 each 1N4007 diodes in series, then place a 0.01 UF / 1000 volts capacitor across each diode with a 1 Megohm resistor , 1/2 Watt -- may be difficult to find now, I do not know. Encase the whole affair in a heavy plastic tubing for isolation
Nando
For anyone else looking, I found them on http://www.electronicsic.com/diode.htm# for $4.95. And Yes, Parts Select wants $50 for them. Holy 1000% Markup, Batman!
I can't vouch for the validity of either store, but I think at $50, you're gonna run yourself out of business. I mean, we were considering a new microwave versus paying for a replacement part.
