High Voltage Transformer - GE Advantium PSA2200R Technical Service Manual

High Voltage Transformer

• Location (See
Right Side View
• The transformer steps up 120 VAC line voltage to
high voltage, which is then changed to an even
higher DC voltage by the Capacitor and Diode.
• WARNING: Always be certain the capacitor
is discharged before servicing. (See
) Use electrician's discharge pliers
and Diode.
and electrician's gloves under Kevlar gloves or
equivalent protective gloves when discharging
the capacitor.
• Note: The capacitor has an internal discharge
resistor that automatically discharges the
capacitor when the oven turns OFF. Under
normal operation, the capacitor should fully
discharge within 30 seconds.
• Check the high voltage transformer windings for
approximate resistance value between:
Red to Yellow (primary) - .5 :
Red/Black to chassis ground (secondary) - 80 :
Magnetron harness (¿ lament high voltage) - .2 :
• For operating algorithms, see
"Microwave".
Chart
Troubleshooting
To troubleshoot High Voltage Transformer primary
voltage, see
test the High Voltage Transformer:
Check the following resistances:
If resistance values are correct, High Voltage
Transformer is OK.
Disassembly
To remove the High Voltage Transformer:
1. Remove the Outer Cover. (See
2. Remove the Bottom Cover. (See
.)
3. Remove the duct extension to access 1 of the 4
Capacitor
Before disconnecting the primary and secondary
wire connections, note the wire locations. The wire
Load Algorithm connectors are ¿ rmly attached and DO NOT use
releasing locking tabs.
– 60 –
troubleshooting section. To
Magnetron
Red to Yellow (primary) - .5 :
Red/Black to chassis ground (secondary) - 80 :
Magnetron harness (¿ lament high voltage) - .2 :
Phillips-head screws that attach the transformer
to the baseplate. (See
Lower Cooling Motor
, step 4.)
Removal
.)
Outer Cover
.)
Bottom Cover