Do-It-Yourself Story

I have a GE JS998S0K3SS slide-in range with Trivection oven. The display stopped working and oven controls were nonresponsive. Electric cooktop was still working. In my case the problem is the Main Power Board, part number WB27T10551, You do not have to pull the range out to replace this. To fix: Turn off the breaker Remove the cooktop control knobs. Remove the three plastic and one brass holder that are behind the control knobs. Lift the faceplate, remove the electric connector, set faceplate aside. Remove the four screws holding the panel. Lift the panel, disconnect all the connectors, set it aside Remove the ten silver screws holding the black trim that the control panel was mounted on. There are five at the top and five underneath that are visible when you open the oven door. Set aside the black trim. Remove the two black screws holding the cooktop in place. One front left, other front right. Set aside the cooktop. The main power board is the large PCB with heat sinks on the right towards the rear. To verify it is broken you need a voltmeter. At the rear right of the board (top left in the picture of the board on this site) there is a black, white, and red wire, plugged into ports J101,J102, J103. Disconnect all three. Turn the power back on. Verify 120VAC between J101 and J103 wires Verify 120VAC between J102 and J103 wires. If this test passes, turn off power, reconnect wires. Disconnect connector J3 which is on the front left of the installed board (bottom right in picture of the board on this site). Turn power back on. Verify +12VDC between J3 pin 1 and pin2 Verify +5VDC between J3 pin 3 and pin 2 Verify -14VDC between J3 pin 5 and pin 2. If tests fails replace the board. To replace the board: Turn off the power Disconnect the electrical connectors. The board is sitting on about 12 hold-down pins. Use a small diameter deep-well socket to squeeze the pins and gently lift the board off each. Getting all the pins to line up under the new board is a pain. Gently push the new board down into place.