Acer AT3720A AT3720A Service Guide - Page 70
AV1/S-video no sound, AV1/S-Video/R-L, Cable plug in?, Check Video and R-L
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Page 70 highlights
15. AV1/S-video no sound O AV1/S-Video/R-L Cable plug in? Mute turn-off Volume =30 no Check Video and R-L cable or Replacement Video or R-L Cable AV1/S-Video Source can Display? no Check Video and R-L cable or Replacement Video or R-L Cable AV1/S-Video Sound Normal? no Replacement IO/B AV1/S-Video Sound Normal? no Replace L1 M/B END 64 Chapter 4