Philips 107T60 - Repair Flow Chart

Repair Flow Chart
107T6 CRT
87
A. Power Supply Failure
1. Symptom:
No startup sound
LED light off
Check 7102 Pin8
100V<Pin8<380V
OK
Check 7102
Pin1>2V
OK
Check 7102
Pin5=2.4V
OK
Check 7102
Pin6 output?
OK
NO
NO
Replace 7102
Check 3113/
3104/7101
NO
Check
1102/6101/
7101/2105
Check
Pin6>8V
Check 6105
Replace 7102
2. Symptom:
hicup mode with
startup sound or
blinking LED
Turn power off
check the resistance for
all output voltages +190,
+82, 6, 12, -12, 5,
check 6151-6158 short?
Check 7102
Pin1<13.5V
OK
NO
NO
Check 7102
Pin5=2.4V
Check 7155/
7152/7154
Check 7105
Open Circuit
Check CPU Pin51
7102 Pin4 DEMAG
possibly active
short 7154 PinC
OCP possibly active
Check 3109,3105
OVP possibly active
Check 6105
Replace 5156
Replace 5156
OK
OK
OK
NO
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