GE JS998 Series - Oven Dead - Keyboard Works, Displays Not Working

– 44 –
Oven Dead - Keyboard Works - Displays Do Not Work
Are the following DC voltages present?
+12VDC from MPB J3, pin 1 to pin 2
+5VDC from MPB J3, pin 3 to pin 2
-14VDC from MPB J3, pin 5 to pin 2
Replace the MPB.
Are the following DC voltages present?
+12VDC from MLB J5, pin 1 to pin 2
+5VDC from MLB J5, pin 3 to pin 2
-14VDC from MLB J5, pin 5 to pin 2
Does the LED on the glass
touch signal board light up and
beep when a key is pressed?
Repair faulty wiring from
the MPB to the MLB.
Replace the 10 pin cable from the
glass touch signal board to the MLB.
Does the oven work?
Replace the glass
touch signal board.
Does the oven work?
Replace the glass
touch assembly.
Replace the glass
touch signal board.
Replace the 10 pin cable from the
glass touch board to the MLB.
Does the oven work?
Replace the 34 pin ribbon cable from the
glass touch board to the glass touch display.
Does the oven work?
Replace the MLB.
Does the oven work?
No
No
No
No
No
Yes
No
Yes
Yes
No
No