You guys are, at this point, becoming skilled Appliance Techs. (AT's). Absolutely 100 % customers' need an explanation. One of the best things to remember is that they are not Techs and will not understand in the time you have. Be sure to get pd first.
I have a question, not really about in this video. But on a microwave not heat up. I used a multimeter on the upper door switch on my microwave and it read 135 ohms but in a closed state, it reads 0.01 ohms. Does this need replacing? My microwave wasn't able to heat up food before but everything powers on, like a normal microwave but it simply doesn't heat the food up. When I replaced the diode, it helped somewhat warm food up. Still far from what it could do before. (before the original diode read (4.25V) and the new diode read (5.30V), so not sure that's what helped it get slightly warm the food?) Likely the magnetron is the problem but all tests (with the multimeter) indicate it's still good but I do know magnetron can still go bad even if you get a perfect score in visual/multimeter testing. I'm not sure if it's normal but I have 2 fuses and the fuse with housing covering it (glass fuse that looks like a spring inside [5KV 0.75A Fuse]) Tested it with my multimeter and sometimes (not sure if unsteady hands and failing at it) I sometimes get continuity and sometimes not and sometimes numbers jump around? Doesn't look blown but not sure if the microwave won't heat up properly if the fuse is inconsistent? Any input is much appreciated, I have a RCA RMW733-BLACK microwave. (Not sure if this helps, but inside the microwave, is significantly hotter, not sure if that means the heat isn't bouncing properly into the food? 🤔)
First of all hope you are aware HV at magnetron reaches 3,800 Pulsating DC and on that note, Im not sure if you are stating the voltage you have accreoss the diode when running and that I will say to cover my -- only voltage in to the transformer of 120vac, NO VOLTAGE CHECKS ON THE HIGH SIDE, they all can be tested for ohms safely. On our members video section I have a 4 part video explaining theory and how the microwaves work Sounds like the magnetron, but like you said they test good either way. Ohm diode and cap for farad value about .99, if you have 120vac to the input of the trnansformer change mag. Richard from TMM Academcis
Another Great Video... Thank you so much...
You guys are, at this point, becoming skilled Appliance Techs. (AT's).
Absolutely 100 % customers' need an explanation.
One of the best things to remember is that they are not Techs and will not understand in the time you have.
Be sure to get pd first.
I have a question, not really about in this video. But on a microwave not heat up.
I used a multimeter on the upper door switch on my microwave and it read 135 ohms but in a closed state, it reads 0.01 ohms. Does this need replacing?
My microwave wasn't able to heat up food before but everything powers on, like a normal microwave but it simply doesn't heat the food up. When I replaced the diode, it helped somewhat warm food up. Still far from what it could do before. (before the original diode read (4.25V) and the new diode read (5.30V), so not sure that's what helped it get slightly warm the food?)
Likely the magnetron is the problem but all tests (with the multimeter) indicate it's still good but I do know magnetron can still go bad even if you get a perfect score in visual/multimeter testing.
I'm not sure if it's normal but I have 2 fuses and the fuse with housing covering it (glass fuse that looks like a spring inside [5KV 0.75A Fuse]) Tested it with my multimeter and sometimes (not sure if unsteady hands and failing at it) I sometimes get continuity and sometimes not and sometimes numbers jump around? Doesn't look blown but not sure if the microwave won't heat up properly if the fuse is inconsistent?
Any input is much appreciated, I have a RCA RMW733-BLACK microwave. (Not sure if this helps, but inside the microwave, is significantly hotter, not sure if that means the heat isn't bouncing properly into the food? 🤔)
First of all hope you are aware HV at magnetron reaches 3,800 Pulsating DC and on that note, Im not sure if you are stating the voltage you have accreoss the diode when running and that I will say to cover my -- only voltage in to the transformer of 120vac, NO VOLTAGE CHECKS ON THE HIGH SIDE, they all can be tested for ohms safely. On our members video section I have a 4 part video explaining theory and how the microwaves work
Sounds like the magnetron, but like you said they test good either way. Ohm diode and cap for farad value about .99, if you have 120vac to the input of the trnansformer change mag.
Richard from TMM Academcis