No Digital TV (Cable or OTA)
Problem: Snow on all digital cable and OTA channels.
Resolution: Check the digital tuner on the digital tuner PCB. Check circuitry and connections,
replace the PCB if necessary.
32" POWERSUPPLY
TROUBLESHOOTING
General Troubleshooting
Problem: Doesn't go into standby mode (no red LED)
Resolution: Check power supply circuity (and fuse).
Problem: LED blinks but stays red after pressing power.
Resolution: Check power supply or main PCB. Power supply is trying to turn on but doesn't receive any
feedback from the TV, so it turns back off.
Problem: LED blinks green but then goes back to red.
Resolution: Check fan.
Directview LCD Training
No power
Check
the condition of power
Related connectors.
PASS
Measure the
stand_by voltage :
D_board P1401 5 th pin
ST_ 6V
PASS
Measure D_board
Standby voltage:
D_board P1401 8th
6V
PASS
Push the POWER ON key
Dose the set turn
on normally?
PASS
O.K
31
CIRCUIT DESCRIPTIONS
Connect the connectors
FAIL
Check the
power board
Digital ref. voltage :
FAIL
Power board CN804
1th pin 24V
FAIL
Replace Power_board
Check
Power_board
analog ref. voltage
FAIL
A_board P801
1th pin 24V
FAIL
Replace the Power_board
Measure Power
On signal level :
A_board P801 2nd
pin > 5V
PASS
Measure D_board
supply voltage :
P1401 1th pin 3V 8th
6V, 10th 12V
FAIL
Replace Power board
FAIL
Replace D_board
Circuit Descriptions