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SYNC MASTER 757DFX Manual de Servicio
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5 Troubleshooting
5-2 General Troubleshooting
5-2-1 No Picture
Yes Go to 5-2-2 Shut down troubleshooting guide.
LED blinks?
WAVEFORMS
20 R, G, B, Video
No G2 Voltage is right? No Check D598, D599 and G2 wire. Also check around FBT circuits. Yes Heater Voltage is right? No Check CN201 Assy and D642, Q672.
Yes
20
R, G, B Cathode is right?
No
Return back the No Video (5-1-16) troubleshooting guide.
Yes Check the CRT Socket which it is connected with CRT. Replace the CRT.
5-2-2 Shut Down
LED is blinking so fast (Once per 300m sec)? No LED is blinking once a second? Yes Check signal cable and signal source.