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I need Diode SCL-11Z for a RM 691

Diode SCL-11Z is bad.

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Microwave stops after 15 to 20 seconds and dont want to turn back on

common failure and usual suspects include:

Diode most use inside for voltage change from AC-DC.

A bad large AC filter cap in most models inside the unit.

A bad Magnetron or the inverter board connected to it that does the heating.

12_20_2012_5_07_39_pm.jpgtypical diode

Typical filter cap used--shapes will vary from round to oval and usually if bad it will be puffed up---it can be like the diode tested with a ohm meter--good or bad.

Typical Magnetron, cannot usually be tested unless it is burned and connects to the inverter that provides it voltage and controls it.

Dec 20, 2012 | Microwave Ovens

1 Answer

Have power but no heat

common issues that cause this:

Bad Diode that many units use.

Bad inverter circuit board that controls and is connected to the Magnetron.

Bad Magnetron that does the cooking.
12_14_2012_5_19_39_pm.jpgtypical diode used

12_14_2012_5_20_16_pm.jpgTypical Magnetron

Dec 14, 2012 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

I have kenmore microwave model 721.80012401 it does not heat, I checked the magnetron thermostat, capacitor and the only thing that does not check out is the diode,can the diode cause this problem?

yes your diode can keep it from heating but it usually makes a loud growling if diode is bad. there is also another thermal disc on the other side of the oven that could be open. usually can see it in a hole in the plastic with 2 wires. if there is continuity on both this and the mag thermal, you may have a bad magnetron

Feb 11, 2012 | Kenmore 63252 Microwave Oven

1 Answer

Will not heat up food everything else is working

could be 1 of 2 problems. could be simple as a bad diode, or could be a bad magnetron. the microwave tends to make a humming sound while heating if its the diode. If the microwave sounds normal but just not heating then the magnetron is bad and needs to be replaced.

Mar 25, 2011 | Samsung SMH8165STE Microwave Oven

1 Answer

It just stoped heating or cooking foods why im hungry

If the microwave is making a humming sound, the diode is bad and needs to be replaced. If it sounds normal, but just not heating, then the magnetron is bad and needs to be replaced. If it is the magnetron, I suggest that you change the diode as well.

Feb 10, 2011 | General Electric Microwave Oven

2 Answers

Ge microwave mod. #JVM1851BH06. i ohmed the capicitor 2 meg ohm and increased to 11 meg ohm. I also measured the diode which i believe branches off one leg of capacitor it shows open resistance O.L. both...

I'd say your diode is bad but your capacitor may be good. You need to test it further - as described below.

In order to get reliable measurements to make a determination about the condition of the components, each should have at least one lead removed from the circuit. If not, your meter will read the through the rest of the circuit - and not be limited to the diode or capacitor under test.

To check a diode: Set the meter to to the lowest scale (Rx1) and touch black (-) probe to the cathode of the diode (the end with a band around the diode body) and the red (+) to the anode lead to reverse bias the diode. The meter should indicate "OL" or high resistance. Reverse the meter probes so that RED (+) is on the cathode lead and black (-) is on the anode to forward bias the diode. The meter should read a very low resistance - approaching 0 ohms. Diodes should conduct in one direction only - and the other is should look "open" If it conducts or is open in both directions, it is defective. Zener diodes can be checked with an ohm meter, but need a variable voltage supply and are required to be in a circuit (instead of out of circuit like a standard diode) for accurate testing. A link to zener diode testing here.

To check a capacitor: Set the meter to the lowest scale (Rx1) and touch probes to capacitor leads. The meter should indicate "OL" or high resistance and show steadily decreasing resistance before increasing to OL or high resistance again. Swap probes from the meter on the capacitor leads and "OL or high resistance indication should change to an even lower amount of resistance thas before before returning to "OL" or high resistance indication. These are test result characteristics of a good capacitor under test.

I hope this helps & good luck! Please rate my reply - thanks!

Jan 27, 2011 | GE Profile Spacemaker Over-the-Range...

1 Answer

Tappan over range has no heat!

You have a bad high voltage diode, bad filter capacitro or a bad magnatron. The diode and capacitor does not cost very much. You can get them at . Replacement would mean removing the unit from under the counter, remove the case. Locate the diode and capacitor. They should be near the power section and the diode is attached to the chassis and one side of the filter capacitor. After replaceing 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. Let me know if you need anymore help.


Thanks for using FixYa

Feb 27, 2010 | GE Spacemaker JVM1640SJ Microwave Oven

2 Answers

Model # 40180082 no heat

The magnetron may be OK, it could be as simple as a failed fuse or a high voltage diode or bridge.
Open the unit and if you have even a primitive multimeter you can check the diode and fuse: the diode will measure close to 0 Ohms, the fuse (remove from holder) will measure open, if bad.
The fuse will have a high amperage rating somewhere from 10-20 amperes; call appliance service companies or big hardware stores to find this. Buy two, so if one blows, you have a second on hand to use after possibly replacing the diode.
The diode may be tougher since a device with the necessary ratings of hundreds of volts and a dozen or so amperes aren't used in many devices.
Good luck-

Nov 18, 2009 | Kenmore 62702 Microwave Oven

1 Answer

Every thing works fine but no heat.

Did you change the diode as well, if not you need to change it

The diode is bad, no doubt about it. In most cases replacing the diode should solve the problem.

Jul 23, 2009 | GE Spacemaker JVM1640SJ Microwave Oven

1 Answer

Rectifier going bad

Replace the capacitor and diode together as the capacitor is probably failing, causing the diode to fail.

The only other reason the diode could be failing is the magnetron is pulling too much current, but I doubt it.

Mar 05, 2009 | Frigidaire PLMV168 Microwave Oven

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