Sony KD-55A8F Service Manual

Also see for BRAVIA KD-55A8F: Setup guide

No SoundCheck the picture NGOKRefer to 4.5 HDMI NO PICTURECheck the modeof Source equipmentChange the mode of Source equipment to HDMIDVIHDMINGCheck Source equipmentby Reference TV set(For example, RB2, RB1)OKCheck the settings ofSource equipmentConnect Stereo minijack cable between Source and the TV, andChange “HDMI/DVI Audio Source” to Auto or Analog Audio In.Is Distributor used ?NOYESConnect Sourceequipment directlyCheck Sound by other TV setwhich is same modelNGOKDoes this model haveAnalog Audio In(Stereo minijack)?YESNORefer to 3.0 No Sound AudioDoes this model haveAnalog Audio In(Stereo minijack)?YESNoChange “HDMI/DVI Audio Source” to Auto or HDMI Audio In“HDMI/DVI Audio Source”setting is?Auto or HDMI AudioAnalog Audio InChange B-Board.And inform the designer of it423.8 NO SOUND: HDMI 1/2/3/4