LG Electronics MS3447GR High Voltage, Measure the resistance Normal Momentarily indicates, Diode

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COMPONENTS

TEST PROCEDURE

RESULTS

Antenna

Gasket

Chassis

 

 

 

 

 

Filament

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: When testing the magnetron, be sure to install the magnetron gasket

 

 

in the correct position and be sure that the gasket is in good condition.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HIGH VOLTAGE

Measure the resistance.

 

Normal: Momentarily indicates

CAPACITOR

(Ohm-meter scale: Rx1000)

 

several ohms, and

 

• Terminal to terminal.

 

then gradually returns

 

 

 

 

 

to infinite.

Measure the resistance.

Normal: Infinite.

(Ohm-meter scale: Rx1000)

 

• Terminal to case.

 

HIGH VOLTAGE

Measure the continuity (Forward).

Normal: Continuity.

DIODE

(Ohm-meter scale: Rx10000)

Abnormal: Infinite.

NOTE :

 

 

Some inexpensive meters

 

 

may indicate infinite

 

 

resistance in both direction.

Measure the continuity (Reverse).

Normal: Infinite.

 

(Ohm-meter scale: Rx10000)

Abnormal: Continuity.

LGE Internal Use Only

5-9

Copyright © 2007 LG Electronics. Inc. All right reserved.

 

 

Only for training and service purposes

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Contents Microwave Oven Microwave Radiation Safety PrecautionsContents Approx % SpecificationsFull power throughout the cooking time Approx % of Full powerAntenna Microwave RadiationInstalling InstallationEarthing Instructions Cooking time Features Control PanelOperating Instructions More Pressing More will add 10 seconds to the cooking timeOperating Sequence Schematic Diagram Circuit Description Necessary Tools Service InformationTools and Measuring Instruments Microwave Leakage TestMeasurement with a Fully Assembled Oven Measurement with Outer Case RemovedAround the magnetron Waveguide Control Panel Assembly Measurement of Microwave Power OutputDisassembly and Adjustment Power Supply CordDoor Main Assembly Removal PCB Assembly RemovalVery Carefully AIR Duct Assembly RemovalMagnetron Removal Removing the Turntable MotorInterlock System FAN Motor Assembly RemovalHigh Voltage Transformer Removal High Voltage Capacitor and Diode RemovalSwitches Primary Interlock Switch TestSecondary Interlock Switch Test Monitor Switch TestMagnetron Component Test ProcedureHigh Voltage Transformer Wire leads removed Filament Winding Primary TerminalMeasure the continuity Forward Normal Continuity High VoltageMeasure the resistance Normal Momentarily indicates CapacitorFAN Motor PowerRelay LevelCondition Cause Remedy Trouble ShootingContinuity No continuity Defective PCB assemblyDefective key membrane assembly Defective PCB assembly Some inputs cannot be programmedFuse blows Check continuity Continuity Monitor Switch with Door closedPower supply Replace power supply cordPower source Rating voltage Voltage Normal Disconnect Setting time Check continuitySecondary switch Defective PCB Replace PCB AssemblyAbnormal Defective PCB assembly Defective PCB assembly Defective high voltage transformerReplace high voltage diode Replace magnetron Introduction Exploded ViewDoor Parts Control Panel Parts Oven Cavity Parts Larch Board Parts WTT021 WTP004 56501A 54974T Interior PartsBase Plate Parts

MS3447GR, MS3447GRS specifications

The LG Electronics MS3447GRS and MS3447GR are innovative microwave models designed to enhance your cooking experience with a blend of advanced technology and user-friendly features. Both models are built to accommodate various culinary needs, making them ideal for any kitchen.

One standout feature of the MS3447GRS and MS3447GR is the Smart Inverter technology. This technology provides precise cooking power control, allowing users to defrost, reheat, and cook food evenly. This results in better texture and flavor retention in various dishes, surpassing traditional microwaves that may only provide two or three levels of heating.

Another significant characteristic is the EasyClean interior. This feature ensures that maintaining a clean microwave is hassle-free. The interior surface can be wiped down easily, helping to prevent the buildup of food residues and odors, which allows for a more hygienic cooking environment over time.

The LG MS3447GRS and MS3447GR also come equipped with a range of auto-cook options. These preset cooking modes simplify meal preparation, allowing users to cook a variety of dishes such as popcorn, baked potatoes, and frozen meals with just the push of a button. This is particularly beneficial for busy individuals and families looking to streamline their cooking process.

Additionally, these models boast a sleek and modern design that seamlessly integrates into any kitchen decor. The clean lines, polished finishes, and intuitive control panel make it an attractive and functional appliance. The user interface is designed for ease of use, with clear indicators and a layout that simplifies operation.

Both microwaves feature a spacious interior, which provides ample room for a variety of cookware sizes, making it easier to heat larger dishes. The turntable ensures that food is cooked evenly, while the powerful wattage guarantees efficient cooking times.

In conclusion, the LG Electronics MS3447GRS and MS3447GR microwave models are exemplary devices that combine cutting-edge technology with practical features. Their Smart Inverter, EasyClean technology, and flexible cooking options cater to the needs of modern kitchens, affirming LG's commitment to innovation and quality in kitchen appliances. Whether you're reheating leftovers or preparing a family meal, these microwaves make cooking simpler and more efficient.