Question about GE JVM1630 Microwave Oven

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Where is magnatron located

Where is magnatron located

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  • David Shaub May 11, 2010

    If you don't know where it is, you definately don't want to mess with it. It can kill you.


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Where the high voltage lead from the transformer goes to that is the magnetron.that produces microwaves..the h.v. lead is the thickest 1 goodday

Posted on Nov 12, 2009

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What do i do if my Hamilton beach microwave will not heat anything!!

Most of the time if the unit won't hest anything, the the power diode.

If you are familiar with working with very high voltage, open the unit, carefully discharge the power capacito using an insulated screwdriver.

Now look for any loose wiring. Reattach any loose wires to their contacts.Check and replace any blown fuses with identical ones.

Now, locate the piwer diode in the high voltage circuit and test it for function. This diode is often the only problem. I have repaired many microwaves by only replacing this diode.

If everything checks out so far, read the schematic and test the large step-up transformer. Afterwards, check the circuitry containing the magnatron.

Except for the transformer and the magnatron, the unit will be worth repairing. If the transformer or magnatron is the problem, the cost of the replacement parts is higher than a new unit.....unless you happen to have the right working part lying around.

Hope this helps. But remember, ALWAYS discharge the high-voltage-capacitor.....the charge is enough to hurt you SEVERLY!

Feb 19, 2015 | Hamilton Beach Microwave Ovens


Microwave Oven will not heat.

When your microwave oven has power, the fan runs, carousel turns, light comes on but the unit does not heat up you have a bad high voltage diode, bad filter capacitor or a bad magnatron in that order. The diode and capacitor do not cost very much. You can get them at or . Replacement would mean removing the unit from under the counter (if not a tabletop unit) and removing the case. Locate the diode and capacitor. They should be near the power section behind the transformer and display. The diode is attached to the chassis on one side with a screw and on the other end with a spade lug to one side of the filter capacitor. The diode is brown and has an arrow on the side. The filter capacitor is a large oval silver can with two spade lug connections on one end. After replacing both parts if the unit will not heat you would need a new magnatron. The part is fairly expensive, but depending on the cost of your unit, it may pay to replace it. You should be able to get the magnatron at . The magnatron replacement is not difficult. About four screws and several wires on spade lugs. Just be concientious or mark everything for correct reassembly. Also make sure the part is correctly installed and all seals are in place. You do not want microwave energy to leak out.


Thanks for using FixYa

on Feb 27, 2010 | Microwave Ovens

1 Answer

First of all, my do it yourself expertise is very high. I have power to the microwave (panel, interior light, etc). When I try to operate the microwave - the electronic panel intications are normal, but...

BECAREFUL high voltage transformer inside of unit. Check for blown fuses on the control panel. Check the door interlock sitches. there are usually 2-3. A bad interlock will keep power from the magnatron. Check the thermal fuse, small dime sized disc with 2 wires. look for the schematic it will give the location usually near the magnatron. Checking the magnatron is a little more difficult.

Oct 10, 2009 | Whirlpool MH7140XF Microwave Oven

1 Answer

Maytag MMV4205BA microwave buzz/grind when operating then no power

you may have some arching inside where your magnatron is located.If you open the door on the right middle part there is a silverplate on the wall .If it is burned you may need to replace magnatron.if you do not seee burn marks it may still be the magnatron hope.that would be the only possible thing that would make the noise other then the mtor plate out of place.

May 15, 2009 | Maytag MMV4205 Microwave Oven

1 Answer

The microwave won't boil water or cook the food we put in. its only saying power 100. what do we do?

I may need more information, however, I suggest that it could be either a dead magnatron or the high voltage fuse link to the magnatron. Check "Demo" mode, WARNING: if you try and replace the fuse or magnatron yourself, make sure of 2 things, 1/ unplug from the wall 2/ make sure the HV Capacitor is discharged before touching anything around the magnatron....also, I may need the model and brand for better diagnosis... Phil

Apr 06, 2009 | Kenmore 63252 Microwave Oven

1 Answer

No power replace fuse

there are thermal fuses as well as the ceramic power fuse. one is located on the heating element(magnatron) and one on the cabinet. if the one on the magnatron is blown you more than likely have a bad mag as well. if it is the one on the cabinet it just got too hot while cooking

Jan 31, 2009 | GE JE1640 Microwave Oven

1 Answer

GE spacemaker xl1800 and Pop tarts bad mix

it sound to me as if the high voltage diode is shorted. It could be inside the capacitor or out board the cap. The capactor could also be short but this is a rarity. Diodes are a cheep item . repace it and if it don't work its probably the magnatro. good luck.

May 13, 2008 | Microwave Ovens

1 Answer

GE spacemaker xl1800

more than likely the fuse has blown onthe magnatron it is the button looking thing on the magnatron with two wires. there are 2 of these one is on the magnatron the other is above the heat box test these for open. if open replace. if good then replace the magnatron.

May 02, 2008 | Microwave Ovens

1 Answer

Power surge

The high-voltage transformer being overloaded by something shorting it out. Either the magnatron or the high-voltage capacitor and diode. Replace the capacitor and diode then if still not working, replace the magnatron. The magnatron is only affordable to do it yourself - buy the part on EBAY - lookup "universal magnatron"
Hope ya fix it!

Feb 10, 2008 | GE JE1860 Microwave Oven

2 Answers

Trips the circuit

I called GE about a unit running for 2 seconds and stopping, then stating the date and time needed to be entered. They agreed to pay for parts if I pay for labor. One repairman said it may be the manatron seal leaking and allowing microwaves to hit the control panel. He suggested removing the screws in the upper grill and then losoign one or two screws that hold the control panel in place. Tip it forward and try running the machine. If it runs okay, then the seals are the problem. I plan to try this tomrrow (it's in a rental unti) and take it in Monday to a shop.

Jim Alex

Jan 03, 2008 | GE Spacemaker JVM1640SJ Microwave Oven

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