SAMSUNG SYNCMASTER 520TFT
Manual de Servicio

6 Troubleshooting

6-6 No Sound

Does the DC 5 V appear at Pin 5 of CN806, Pin 4 of IC803? Yes Does the sound input signal appear at Pins 6 and 11 of IC803? Yes Do the sound signals appear at Pins 3 and 14 of IC803? Yes Does the DC 2.5 V bias appear at Pin 16 of IC503? Yes Check CN814, CN815 outputs.

No

Check IC804, IC803, VR841 and related circuit.

No

Check Pins 1 and 2 of CN806 and related circuits.

No

Check IC803 and related circuits.

No

Check CN813, ZD803, R821, R822, C815 on the Audio PCB.

SyncMaster 320TFT/520TFT

6-5