Acer AT4220A AT4220A Service Guide - Page 72
AV1/S-Video No Sound, Check Video and R-L
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AV1/S-Video No Sound 1 AV1/S-Video/R-L Cable plug in? Mute turn-off Volume =30 Earphone remove AV1/S-Video Source can Display? Check Video and R-L cable or Replacement Video or R-L Cable Check Video and R-L cable or Replacement Video or R-L Cable AV1/S-Video Sound Normal? Replacement IO/B AV1/S-Video Sound Normal? L1 END 65 Chapter 3