Daewoo KOG-366T0S, Service Manual, Page: 34 / 56

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Following the procedures below to check if the oven is defective or not.
1. Check earthing before fault finding.
2. Be careful of the high voltage circuit.
3. Discharge the high voltage capacitor.
4. When checking the continuity of switches, fuse or high voltage transformer, disconnect one lead wire from
these parts and check continuity with the AC plug removed. To do otherwise may result in a false reading or
damage to your meter.
(TROUBLE 1) The following visual conditions indicate a probable defective touch control circuit.
TROUBLE SHOOTING GUIDE
1. Incomplete segments.
(A) Segments missing.
(B) Partial segments missing.
(C) Digit flickering other than normal fluorescent
slight flickering.
2. A distinct change in the brightness of one or more
numbers in the display.
3. One or more digits in the display are not on when
they should be.
4. Display indicates a number different from one
setted. (For example, when 5:00 setted, 3:00
appears in the display.)
5. Specific numbers (for example 2 and 3 )do not
display when the dial knob is rotated.
6. Display does not count down or up with time
cooking or clock operation.
7. Oven is programmable and cooks normally but no
display shows.
8. Display obviously jumps in time while counting
down.
9. Display counts down noticeably too fast while
cooking.
10. Display can not shift from the first stage cooking to
the third stage cooking while 3 phase cooking
(including defrost).
11. Display does not show the time of day when clear
button is pressed.
12. Oven lamp and fan motor and turn table motor do
not stop although cooking is finished.
Check if the RELAY (RY2) contacts close if they
are close, replace touch control circuit.
NOTE : When electric parts are checked or replaced, be sure the power cord is not inserted the wall outlet.
Check wire harness, wiring, and connection of the terminals, and power cord before check the parts
listed below.