Toshiba 26AV52R Service Material And Reference Tips page 6

Replace the
NO
LVDS cable(s). Does 24 volts
Power supply
return when AC is reapplied
module.
Is
24 VDC present
at pins 1 through 5 of
NO
P803 on the power PCB
when the unit is
turned
on?
Remove
AC, then unplug the
and the unit
is turned on?
YES
Replace the
display. ***
Backlight
Troubleshooting
Does
the back light
NO
function and then
turn off or is there a
dark horizontal area
on the
screen?
YES
Is 4.5VDC
present at pin 16
of P802 shortly (.5 sec)
after the unit is
turned on?
NO
Replace the
Main module.
YES
If it is
available , try one or both
inverters. If this does not
help, replace the LCD
display. ***
YES
*** Warranty Authorization
required if display is
replaced in warranty – Go
to www7.toshiba.com for
instructions.
SMART2009-LCD509-V4 Page 6 of 11