If the DVD is connected to the TV properly using the yellow, white & red AV cable and the TV is switched to AV and there is still no picture, plug the yellow lead from the back of the DVD player into the green socket. If you see a black and white picture now the DVD output is on Progressive Scan mode. See user manual to turn off Progressive Scan mode.
Sony DVD FX-820 has sound but no picture. Checked cords, cleaned and used another CD and also...
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Sony DVD FX-820 has sound but no picture. Checked cords, cleaned and used another CD and also checked to be sure setting was set at line out - now what?