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How do you discharge a microwave capacitor? - Microwave Ovens

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5 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 1314 Answers

SOURCE: how do I discharge the high voltage capacitor on a ge spacemaker

take a long plastic handleed screwdriver touch to pos of cap and the body of the mircrowave

Posted on Jan 29, 2009

kel1guy2002
  • 3740 Answers

SOURCE: discharge the capacitors in a microwave oven

Just take a screwdriver and short across the terminals 3 to 4 times. The first time might scare you but just hold the screwdriver well back from the steel shank and ground the 2 terminals repeatedly. Then change your fuse.

Posted on Jan 17, 2010

Testimonial: "Thanks...Looks like I have to short the terminals to one another and then each one to ground....appreciate the help. "

freetek
  • 5568 Answers

SOURCE: need to discharge microwave capacitor

Time will allow the natural leakage of any capacitor to bleed off stored charge but if you want to be sure, you need to have a simple multimeter to check its condition and it should be one with a 1000V DC range. You can buy these for under $20 US at auto parts stores or electronic outlets. There are safe ways to discharge them but you would need some clip leads and a medium power resistor of ~ 1,000 ohms to avoid arcing. Shorting the terminals with a screwdriver is hard on the tool and your nerves and may even kill a capacitor.

Posted on Feb 13, 2010

MicrowaveSvc
  • 9047 Answers

SOURCE: where is the capacitor on the kitchenaid microwave KHH2090SSS

You can find helpful exploded view diagrams and order parts by entering your full model number here.

This model is inverter-based, so it does not use the larger, exposed capacitor that transformer-based models do. It uses one or more small capacitors hidden on the inverter board.

As long as the high voltage section was not energized within about a half-hour of disassembly, and one does not contact the high voltage connections, there's really no need to discharge high voltage capacitors.

They have built-in bleeder resistors that bleed off the charge in seconds. But there is that one in a zillion chance the resistor inside is defective, etc.

The shock from stored DC high voltage isn't what hurts you. What hurts is getting sliced up by the sharp metal chassis when you reflexively pull back your hand after the shock.

I'm also curious as to what problem you're troubleshooting.

We're
happy to help you with free advice and we'd appreciate your thoughtful rating of our answer.

Posted on Dec 18, 2011

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1 Answer

How do I discharge microwave capacitor


Most of the time there is a bleed off resistor that will take care of any charge that might be stored in the capacitor, but they can and do fail. I used to have a training video on how to work on microwaves and the procedure they recommended to discharge the capacitor was to take two large screwdrivers and put one on each tab on the capacitor and then cross the screwdriver blades so that they touch. If you get a spark, that tells you that it was storing power and you have now discharged that power, also lets you know the bleed off resistor has possibly failed. If there is no spark, then it has already been discharged and is safe to remove. Hope this helps.

Oct 16, 2014 | GE Microwave Ovens

Tip

How to discharge a microwave oven's capacitor:


Discharging a high voltage capacitor<br /><br />Discharging your microwave's capacitor is absolutely essential in preventing injury to your microwave, your tools, and yourself. A capacitor stores large amounts of electricity even when your microwave is unplugged, and it must be discharged before beginning any repair.<br /><br />A capacitor is discharged by creating a short circuit between each of the two capacitor terminals, and between each terminal and the chassis. The chassis is the metal mounting (bare metal surface) of the capacitor. Read these directions thoroughly before you proceed.<br /><br />With your microwave unit unplugged, touch the blade of a well insulated screwdriver to one terminal. Gently slide the screwdriver forward until it reaches the other terminal, holding it there for a few seconds. Be aware that this often results in a loud and startling 'POP'.<br /><br />Repeat this procedure in order to create a short circuit between each capacitor terminal and the chassis (bare metal mounting plate surface). This same method can be applied to a capacitor having three, and not two, terminals.<br /><br />I hope this helps.<br />

on Dec 02, 2010 | Microwave Ovens

1 Answer

Changing light bulb


Difficult to give specific instructions without knowing the model of the appliance.

In general, to replace the bulb you have to open the chassis sheet metal that is secured with screws on the back.
IMPORTANT: BEFORE YOU DO ANY WORK ON AN OPEN MICROWAVE, YOU NEED TO DISCHARGE THE CAPACITOR WHICH STORES A HIGH VOLTAGE. If you are not sure of how to do this, it is better to get the service done by a professional. You can search online for "Discharging Microwave Capacitor"
Once the capacitor is safely discharged, you can look at the connections inside and locate the bulb to be replaced. It is typically behind the control panel.

Oct 11, 2013 | Microwave Ovens

1 Answer

GE Spacemaker Microwave Oven STOPPED HEATING


More than likely it's the magnetron and/or diode, chances are it may still be under warranty. Online owners manual states 5 year warranty on magnetron. Part only, service call and installation not included. Diode not covered. They require serial number, and will let you know if it's still under warranty. Installation appears to be simple, UNPLUG MICROWAVE THEN MAKE SURE YOU DISCHARGE CAPACITOR. INJURY OR POSSIBLE DEATH IF NOT DISCHARGED PROPERLY. Google how to install magnetron and discharge capacitor. It will save you approx $ 250 - 300 doing it yourself. Hope this helps. Be Safe

Dec 15, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Re: GE Microwave Oven #JVM1870SF001...turns on but will not heat-up item. Can it be the Magnetron and/or Diode is bad?


More than likely it's the magnetron and/or diode, chances are it may still be under warranty. Online owners manual states 5 year warranty on magnetron. Part only, service call and installation not included. Diode not covered. They require serial number, and will let you know if it's still under warranty. Installation appears to be simple, UNPLUG MICROWAVE THEN MAKE SURE YOU DISCHARGE CAPACITOR. INJURY OR POSSIBLE DEATH IF NOT DISCHARGED PROPERLY. Google how to install magnetron and discharge capacitor. It will save you approx $ 250 - 300 doing it yourself. Hope this helps. Be Safe

Dec 13, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

A few weeks ago our ge JVM1660 quit heating and ge sent me a replacement magnetron. I've heard that the capacitor will discharge after the unit has been unplugged for 24 hours... Mine has been unplugged...


Hi newer microwave ovens have a built in resistor to bleed the power from the capacitor once it is unplugged. Saying this it is always a good safety practice to discharge it.

The factory approved method is to purchase a 2 Watt, 20,000 ohm resistor and touch it across the terminals on the microwave capacitor to discharge, doing this with a tool like pliers so you are not touching the metal tips of the resistor.

Most technicians will use pliers that have insulated handles and touch the tips to the capacitor. I am not condoning that, just letting you know.

May 09, 2010 | GE JVM1660 Microwave Oven

1 Answer

Discharge the capacitors in a microwave oven


Just take a screwdriver and short across the terminals 3 to 4 times. The first time might scare you but just hold the screwdriver well back from the steel shank and ground the 2 terminals repeatedly. Then change your fuse.

Jan 17, 2010 | General Electric Microwave Oven

1 Answer

Everything works does not heat


If the microwave operates normally, but does not heath at all, then it can be the high voltage capacitor, the rectifier diode.or the magnetron.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, your model number did not return any result, contact the seller here to purchase parts. (here in UK).If the microwave operates normally, but does not heath at all, then it can be the high voltage capacitor, the rectifier diode.or the magnetron.

The diode and capacitors can br tested. The capacitor must be allowed discharge before testing, or you risk to get electrocuted, even if power is off. Capacitors can get discharged by shorting their two contacts.
Replace the magnetron if the checks and all of the high voltage component tests are good, but the unit still does not heat.

All locations, and description of this parts can be located using the diagram here: Counter top.

Parts must be tested to find out what is wrong.

Remember that microwaves are potentially dangerous devices if not repaired properly, the job must be done by a competent person.
A microwave energy leakage test must always be performed when the oven is serviced for any reason.

Regarding parts, your model number did not return any result, contact the seller here to purchase parts. (here in UK).

Apr 27, 2009 | General Electric Microwave Oven

1 Answer

Locating capacitor and diode to discharge capacitor


Alot of the Panasonic models had the Transformer and Capacitor and Diode built into the power board situated bottom right as you look at the appliance.
Dont know of a way to actually discharge this arrangement.

Apr 07, 2009 | Panasonic NN-S753 Microwave Oven

1 Answer

Replace diode


I rarely suggest field repairs on microwave ovens because of the possibility of microwave energy being released. With all due respect, if you don't know all capacitors must be discharged before working on circuits, you should probably leave this alone. Think with me... If a diode burned, what caused it? You must trace that back to its root. It takes a severe overvoltage to burn out a diode.

Ray

Nov 20, 2008 | GE JVM2050 Microwave Oven

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