Dynex DX-32L200A12 Service Manual page 17

Troubleshooting Guides
2. No picture
Replace the
main board
Enter factory
menu, initialize
EEPROM,
N
Replace the
restart the TV
main board
and check if
there is picture?
Re-adjust the
main board
No picture
Y
Check if the
TV set can be
operated by
RC or keypad?
Y
Has back
light?
Y
Press MENU
N
button, check
if OSD
displays
normally?
Y
Y
No picture at
all channels?
Y
N
Which channel
has no picture?
TV
Check if DIF
output of
TUN2-
13#,14# is
normal?
N
Check TUN2
and its
peripheral
circuit
N
Replace the
main board
N N
Is there 24V
on power
board?
Y
Check if the
N
voltage of
X601-13# is
high level?
Y
Check the
backlight
OTHER
Replace the
main board
Y
Replace the
main board
Check the
power board
Replace the
main board