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Microwave not heating

  • Every thing, be it an electrical appliance or some kind of mechanism, has its expiry date and resource of work. In our world there is nothing eternal and the magnetron is no exception. The resource of operation of the magnetron directly depends on the mode of its operation. The more intensive the microwave oven, the less the magnetron will serve. In the course of long operation, the magnetron “ages and wears out”, resulting in such a malfunction as the loss of cathode emission, i.e. The cathode region is depleted with time, and it loses its ability to emit electrons into the working region, which causes the magnetron to stop working. The second malfunction that can occur during long operation is a break in the filament. In this case, you can give an example of an ordinary incandescent lamp, no matter how much it would not shine to you, sooner or later, it will still burn out. As a result of the breakage of the filament, approximately the same situation arises as in the first case. The cathode is not heated, hence – there is no emission. These two malfunctions are often encountered in practice, and if we theorize theoretically, we can assume that a third malfunction occurs as a result of a prolonged operation of the furnace – this is a failure of the magnetic system of the magnetron. In the event of a malfunctioning of the magnetic system, the electrons will simply fly from the cathode to the anode, they will not “circulate” along the anode surface and the microwave oscillations in the resonators will not arise. In practice, it was in magnetrons that I did not see this, but it was found in other devices containing permanent magnets. From time or under the influence of external factors, a permanent magnet can lose its properties (demagnetize).
    Warning: A microwave oven can store a deadly amount of electricity (up to 5000 volts) in its high-voltage capacitor even after the microwave oven is disconnected from the mains. It is therefore extremely important to replace the electronic components in the microwave oven, only a licensed technical can lock them).
  • Another very common malfunction of the magnetron is the breakdown of the pass-through capacitors of the magnetron filter. Check it out, the same simple, by the same tester. In the resistance measurement mode, you need to touch the probes of the device with one of the power terminals of the magnetron and its housing. If the device shows “infinity” – the capacitors are in good order (bottom picture). If the device shows any resistance, then one of the capacitors is broken or in a leak. If there are other serviceable capacitors, they can simply be replaced, if not, then it is better to replace the magnetron with a known good.

Fuse Appliance Repair will restore your microwave.

Appliance Repair in San Jose, CA

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Fuse HVAC& Appliance Repair Yelp reviews San Jose, CA and Nashville, TN

Danh N.
Danh N.
2019-09-06 14:21:23
We hired 5 different HVAC companies to fix our A/C. The first 4 companies tried fixing the AC by replacing the thermostat, control board, installed a...
Mussa K.
Mussa K.
2019-08-31 16:56:29
Top notch customer service in response. After seeing my review both the manager and the owner reached out to me. What followed was an exceptional service to...
Karen S.
Karen S.
2019-08-28 11:55:27
I already Love this company. So easy to book an appointment and a live person answers the phone, so professional the way every company should work Yeah!!!...
Tyler W.
Tyler W.
2019-08-27 08:07:35
I can't recommend Fuse highly enough. We moved into a new house with an AC that was blowing hot air. We had our home warranty company send out two separate...
Aleh S.
Aleh S.
2019-08-24 17:47:28
Great service! The central Air Conditioner condenser (a large box with a fan outside the house) has died in the middle of the heatwave week in August. I...
Lap N.
Lap N.
2019-07-26 11:44:12
My parent's fridge stopped cooling all of a sudden so they tasked me with the repair. I called around to multiple places and the price was pretty much the...
Anna P.
Anna P.
2019-06-30 14:07:59
FUSE you are the BEST! Nick was exactly in time, after short diagnostic he found the problem and offered me different ways to fix the problem. Lucky me, he...
Kim E.
Kim E.
2019-06-20 09:06:41
Fuse has repaired our dishwasher, dryer, and most recently, AC. Every time they have been very thorough in their work, very honest about their prices and...
Lindsay T.
Lindsay T.
2019-06-13 10:39:32
My A/C has been broken through the heat wave the last few days and after a miserable few nights, I finally called around to find any HVAC repair with...
Cheryl H.
Cheryl H.
2019-06-07 18:02:52
Appreciated the prompt responses throughout the whole process. I contacted Fuse to take a look at my A/C system. Called on Thursday evening, was able to get...
Yelp Rating
5.0

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Fuse Appliance Repair.

Phone: (408) 721-2530

Our addresses:
1) 2512 Seaboard Ave, San Jose, CA 95131
2) 349 Everett Ave, Palo Alto, CA 94301
3) 504 Shadow Gln, San Jose, CA 95129
4) 38000 Fremont Boulevard, Fremont, CA 94536
5) 908 Goose Lake Ct San Jose, CA 95123
6) 4848 San Pablo dam road, El Sobrante, CA 94803
8) 101 Hermitage Park Dr, Hermitage, TN 37076
9) 27416 Rondell St Agoura Hills, CA 91301
10) 6800 E Tennessee Ave, Denver, CO 80224

E-mail: support@fuserepair.com

Business Hours: 8am - 8pm every day