Samsung HG24ED470AK Service Manual page 60

4. Troubleshooting
4-2. How to Check Fault Symptom
NO Power and No Video
„
Power cord on.
Check 'Stand-By A13V_PW' 13V appear
at BD210 or BD212?
Set On.
Check 'SW_POWER' more than 3.3V
appear at CN201(6) ?
0V to 3.3V↑ (CN201 #6)
Check 'Power input of Main Ass'y' ?
DC A13V_PW appear at CN202 #3,5,7,9?
0V to 13V (CN202#3,5,7,9)
Check 'Power of main IC(B1.15V)'
appear at BD917?
Check 'Power of DDR IC(B1.5V)' appear
at BD911 ?
Check 'Power of LVDS (13V)' appear at
TP-PANEL_VCC?
0V to 13V (TP-PANEL_VCC)
Change the LVDS cable
4-2
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Cause : There did not supply the power from SMPS.
No
Measure : Change 10P power cable and SMPS.
Cause : Main IC(X14H) did not control the SW_Power.
No
Measure : Change the Main Assy.
Cause : There did not supply the power from SMPS.
No
Measure : Change 10p power cable and SMPS.
Cause : There is problem at DCDC(IC201)/LDO(IC204).
No
Measure : Change the Main Assy.
Cause : There is proble at FET(Q202_NFRC) or Main
IC(NT14L) did not control the SW_PVCC.
No
Measure : Change the Main Assy.
No Change the Panel.