No Video - Samsung SyncMaster 330TFT Service Manual

6 Troubleshooting

6-2 No Video

Power indicator is green
Does the clock pulse
appear at output of
FT110, FT111, FT112?
Yes
18 19
Does the sync pulses appear at
Pins 13 and 14 of IC110?
Yes
2 3 4 5
Do the sync pulses appear at
Pins 22, 23, 25 and 26 of IC310?
Yes
6
Do the waveforms appear at
Pins 5 and 20 of CN301?
Yes
Replace LCD Panel
6-2
7
No
Does the H-sync pulse appear
at Pin 94 of IC101?
Yes
Replace IC101.
20 1
No
Does the sync pulses appear at
Pins 2 and 3 of IC110?
Yes
Replace IC110 or check its
related circuit.
10 11 12
No
Do the sync pulses appear at Pins
2, 3, 54, 55 and 56 of IC301?
Yes
Replace IC305 or check its
related circuit.
No
Replace IC310 and IC311 or
check its related circuits.
No
Does the pulse appear at Pin 10
Replace IC105 (seperate sync)
No
13 14
No
8 9
of IC105 or Pin 1 of IC104?
Yes
Replace IC106.
or IC104 (SOG).
Check IC401 and IC101.
Replace IC301 or check its
related circuit.
SyncMaster 33*TFT/53*TFT
No