Repair Flow Chart - Philips M32 107T4 GS_3 Service Manual

M32 107T4 GS_3
46
9
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A. Power Supply Failure
1. Sympton :
no startup sound
LED light off
2. Sympton :
hicup mode with
startup sound or
blinking LED
check
7112/7115/7116

Repair Flow Chart

check 7102 pin8
Ok
100V<pin8<380V
NO
check
1101/6101/ 1106
7101/2106 3123/3125
replace 7102
Turn power off
check the resistance for
all output voltages+180,
83,13,-13,+6.3,+5,+8 V
check 6131~6136 short?
check 7111
No
open circuit
check 7102 check 7102
Ok
pin1 > 2V pin 5=2.4V
NO NO
check
replace 7102
check
6107
check 7102
OK
pin 1 < 13.5V
No
OVP possibly active
check 6107
Ok
replace 5113
check 7102
Ok
pin6 output ?
Ok
check
6165/3107/
3105/7101
check
pin6>8V
check 7102
pin 5
No
OCP possibly active
check 3115
3122,3121,7104,6111
OK
replace 5113
7102 pin4 DEMAG
possibly active
short 7116 pinC
Ok
check CPU pin 20
and 7805 emitter
NO