Daewoo DSC-30W60N Service Manual page 38

No Power
(Standby Power : U801)
The Standby LED doesn't light up red.
YES
Approximately 150VDC is to C806.
YES
The following waveform is to drain of U801.
100KHz
YES
Check if voltages to PA17D is supplied to DTV
Decoder module and TV micro-processor.
(3.3A, 3.3B, 5V, 32V, 12V, and –12V)
YES
When pressing Power button, the color of Power
LED is green
END
NO
NO
320Vp-p
NO
37
Check if F801 is open.
Check D801 (bridge rectifier).
Check the impedance value of between Source
and Drain to U801. If the value is near zero Ω ,
U801 is dead. Replace U801.
Check the parts caused a short-circuit to
secondary circuits.
Troubleshooting charts