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Blown HV fuse

Can I safely replace the 5kV 0.9A HV fuse in this microwave with a 250V 1&1/4 inch glass fuse? If so should I install one of the same current rating?

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I would replace it with a fuse of the same 5kv.09 as replacing with another may overload the microwave and cause a fire.

not recommended to replace with a higher fuse rating or kind

Posted on Feb 17, 2014

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There are condensation, water drips between the glass on the door of my over the counter microwave/convection oven. Is this a problem? How can I clean this? Microwave is only 6 months old.


HELLO.

Yes.Water can only drip between the glass on the door when the door do not seal properly due to dirt on the microwave door.follow these steps given below to clean the door.

1. Unplug the microwave from the electrical outlet to prevent electrocution. Place the microwave in a well-lit area to be able to locate the fuse.

2. Use a screwdriver to remove the outer cabinet of the microwave, and follow the power cord to the fuse. The fuse is located 2 to 3 inches within the microwave and is attached to the power board.

3. Observe the fuse to determine if it is blown. Blown glass fuses will produce burn marks on nearby surfaces, or the internal fuse wire will be black and melted, while ceramic fuses show no outward appearance of being blown.

4. Determine if a ceramic fuse is blown by testing it with an ohmmeter. If the ohmmeter reads zero ohms, your fuse is not blown. Other readings on the ohmmeter show that your fuse is blown.

5. Replace the blown fuse by popping it out of its holder, and snapping a new fuse in its place. Tighten the fuse clips by squeezing them together with your fingers.

6. Replace the outer cabinet of the microwave, and plug the microwave back into the electrical outlet. Test the microwave to see if it's working properly.

Thanks.

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Microwave blown fuse 5kv 0.75A needs replacing !!!SAFELY!!!


yes you can but it will eventually burn again and this time causing bigger damage

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one of three things shorted could cause this: H.V. diode,capacitor,or the magnetron tube, take screw driver and short terminals on capacitor before touching anything inside the case, then chk resistance on capacitor should show infinite after needle settles, diode should show hi resistance one way and a lower resistance in the other direction(use the RX100 scale not the RX1) on both parts diode should not show very low resistance or it could be leaking,mag is a different story,it can be chk'd but in a different way

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Sanyo em-s1065s is not heating. It is turning on as usual but when the time finishes the food is ice cold. Please help


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Spare parts search ProlineST44 Microwave


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Jul 06, 2009 | Sharp R-242 Microwave Oven

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Fuse is blown


It's 20mm !!
It will have failed for a reason.
At 15amps, I'm guessing your Microwave has a grill too.
It could just be a bulb failure causing the fuse to blow.
Replace it and try again.
If the oven works but no light, that was the cause.

Apr 26, 2009 | Microwave Ovens

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MICROWAVE WILL NOT HEAT


In my case I found an additional fuse, a high tension fuse (5KV 0.8A) in a white on-line isolation slave next to the transformer.
The fuse was blown.
I guess replacing it should solve the problem.

Oct 07, 2008 | Microwave Ovens

3 Answers

Possible fuse -- no power


Replacing a fuse Locate your fuse. Most microwave fuses look like the one pictured to the left. They are usually an inch or two long. Each end is metallic and the center is either ceramic or glass.
To get to the fuse, remove the outer cabinet of the unit, which is usually held in place with a few screws. Once the outer cabinet is removed, follow the power cord into the unit. It will take you to the fuse holder, where the fuse sits. The fuse holder is located two or three inches into the unit, and may be attached to a power board.
Decide if your fuse is blown. A blown glass fuse will produce flash burn marks on nearby surfaces, or it will be completely black on the inside. The internal fuse wire (filament) will be melted and blackened. Ceramic fuses give no outward signs of having blown. To determine if a ceramic fuse is blown, test it with an ohmmeter. If the ohmmeter reads zero ohms, your fuse is fine. A reading of infinite ohms means your fuse is blown.
Replace the blown fuse. Pop it out of its holder and snap in a new one. You can squeeze the fuse clips together with your fingers in order to tighten their grip. Replace the unit's outer cabinet, plug it back in, and test to see if it is running properly. DO NOT run the microwave with nothing in it.
NOTE: Fuses do not usually blow on their own. A fuse may blow because of problems with the interlock switches or with high voltage circuitry. It is also possible, though rare, that a power surge will cause a fuse to blow.

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