High Voltage Inverter Power Supply Test - Whirlpool SPEEDCOOK GH6208 XR Technical Education

HIGH VOLTAGE INVERTER POWER SUPPLY TEST

NOTE: Do not attempt to repair the high voltage inverter power supply board. Replace the com-
plete inverter board assembly.
Verify proper operation of the inverter board by performing the following two tests. It is recom-
mended to use an AC line input current amp meter for testing.
TEST #1
1. Disconnect the two wires from the magnetron terminals.
2. Place 1 liter of water into the oven cavity.
3. Program the oven for 1 minute at full power.
4. Press START. While the oven is operating, the amp meter should indicate between 1.0 and
1.7 amps. After approximately 23 seconds, the oven will turn off, and the display will indicate
an F7 error code.
5. If the current is within the range indicated in the chart, proceed to "Test #2" on the next page.
If not, replace the inverter board.
CONNECTORS
Using Magnetron
Wires (CN703)
Electrical Shock Hazard
Power is present during the following tests.
METER READING
1.0 to 1.7 Amperes
8-4
SYMPTOM
Oven turns off in 23 seconds
F7 error code displayed
Magnetron
Wires