Samsung cea455 series Service Manual page 19

ATT 1. ABNORMAL POWER
I
POWER PART
I
I
Does 150V appear between NO Check FOOl ,L601 ,L602
the capacitor C605
+
AND -
?
POWER S/W,D601-D604,R600
YES
Check 0601 ,0602,1C601 ,D605-D609
TOOl ,D6ll-D618,FR601 (heater) 1C602(12V)
ATT 2. ABNORMAL H-OSC.,H and V CIRCUIT
NO RASTER
ABNORMAL PICTURE SIZE
ABNORMAL VIDEO ON THE SCREEN
Check HV X-RAY Protector
for operation
YES The High Voltage Protector Circuitry make an audibole noise
during operation when power S/W is ON/OFF.
Open the D401 NO Check 1C401,IC402,0401.T401
and its related circuit
YES
Check the H-OSC.
YES
Check H-SYNC.
YES
Check ZD401,D406,T403(FBT)
and its related circuit
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