Troubleshooting - GE WPGT9350 Technical Service Manual

Problem
LCD backlight does not come on.
Vertical lines on the LCD display when the washer
is turned on.
TOUCH TO SELECT WASH CYCLE
COLOR
BY
SPECIAL
BY
FABRIC
CYCLES
LCD screen too dark or too light as compared to
LCD dryer screen.
Replacement LCD screen too dark or too light.
LCD refresh rate is matched to inverter output at
the manufacturer.
Touch screen pad activates an adjacent function
incorrectly, i.e. - Pressing one pad activates a
function of another pad.
Checkerboard pattern in MY CYCLES screen.
Scuff marks on the plastic backspash or cover
(Platinum models).
Motor will not rotate in Demo Mode (motor
pulses).

Troubleshooting

GARMENT
BY
STAIN
INSPECTOR
– 43 –
Possible Cause and Repair
The backlight connection on the main board may
not be secure. Check the connection to make
sure it is secure. The LCD backlight does not
function below 30°F (-1.1°C).
Re-seat LCD ribbon cable at connector CN6 on
the main board. If necessary, a piece of Scotch
tape may be added to the back of the ribbon. This
additional thickness will provide better contact for
the ribbon terminals.
LCD refresh rate can be changed in
(See Contrast setting.)
Mode.
Can occur when LCD screen is replaced. New
LCD screen must also be set to inverter output.
Adjust the refresh rate through the
(See contrast setting.)
Mode.
The LCD display ribbon connection on the main
board may not be secure. Check the connection
to make sure it is secure.
Electrostatic discharge on main board. Enter MY
CYCLES and press DELETE on the touch screen
LCD, this will clear the checkerboard pattern.
Can be removed by appliance polish, part no.
WR97X216 or a high quality of automotive paste
wax.
On some models there is a software algorithm
issue. Add enough water to the tub so the
pressure sensor changes frequency.
Factory Test
Factory Test
(Continued Next Page)