Philips 105S5 - Page 47

Trouble shooting flow chart
PHILIPS Confidential – Do Not Copy 105S5
VII-2
No power or power
abnormal
Power indicator
LED don't light
Is F101 normal
Is CR101 normal
is IC101 normal
Is Q101 or R111,
R112 normal
Check horizontal
and vertical circuit
Replace F101
ReplaceCR101
Replace IC101
Replace Q101 or
R111, R112
Does the power
indictor LED light
once and the go out
Check horizontal circuit
and power on again
Is the power indicator
LED light normally
Check vertical circuit and
power on again
Is the LED normal
Check video circuit
Are TP201~TP205
voltage normal
Check D201, D203, D205,
D206, Q203, Q208
Is the T101 normal
Replace T101
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes
No
No
Yes
No
No
Yes
1. Power supply is defective.
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