Repair Flow Chart - Philips 105S2 CM23 GSIII Service Manual

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A. Power Supply Failure
Sympton:
no startup sound
LED light off
check 7112
pin 1,2,4,5
Sympton:
startup failure
LED blinking
Burst sound
3Back
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Repair flow chart

check 2105
100V< C2105<380V
N
check
1101/1102/
6101/7102
check OVP
Y 7106 / 7107 Y
latch?
check
6172/6157/6158/
6160/6161/6112
short
check
H-deflection
during startup
check 7103
Y
pin8 = 5V
N
check
3135/6106/7103
check
7103 /7104 Y
short
check
+180,80,5,12,
N N
-12, 8, 6
short
replace 5110
check 7501
Hunlock pin17
105S2 CM23 GSIII
9
Go to cover page
check 7103
Y pin 4 osc.
freq=40Khz
N
check
2110/2111/
3108/3131
check 7103 check 7103
N
pin1 = 0V pin6 output ?
6115/3113/
3125/7102
check 7103
pin 3 > 1V
Y
OPP possibly active
check 3116 /3117 /
3118 / 3122
check 7801
Stby pin14
41
Y
Y
check
N
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