DOWNLOAD LG MS-192H Service Manual ↓ Size: 701.11 KB | Pages: 34 in PDF or view online for FREE

6-7 

MICROWAVE OVEN

BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS  MANUAL.

5-9

HIGH VOLTAGE
CAPACITOR

HIGH VOLTAGE
DIODE

NOTE :
Some inexpensive meters
may indicate infinite
resistance in both direction.

Measure the resistance.
(Ohm-meter scale: Rx1000)
• Terminal to terminal.

Measure the resistance.
(Ohm-meter scale: Rx1000)
• Terminal to case.

Measure the continuity (Forward).
(Ohm-meter scale: Rx10000)

Measure the continuity (Reverse).
(Ohm-meter scale: Rx10000)

Normal: Momentarily indicates

several ohms, and
then gradually returns
to infinite.

Normal: 

∞

Normal: Continuity.

Abnormal: 

∞

Normal: 

∞

Abnormal: Continuity.

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.

Antenna

Gasket

Chassis

Filament
Terminals

5-10

MAIN FUSE

Check for continuity of the fuse with an
multi-meter.

NOTE: If the fuse is blown, check the primary, the secondary, and the monitor
switches, H.V.D. and H.V.C. before replacing the fuse.
If the fuse is blown by improper switch operation replace the defective switch
and the fuse at the same time. Replace just the fuse if the switches operate
normally.

Normal               Abnormal