Sony KD-55A8F Service Manual

Also see for BRAVIA KD-55A8F: Setup guide

NGNo PictureCheck otherHDMI inputOther Input is OKAll Inputs NGCheck Picture by other TV setwhich is same modelReference TV setNGCheck Source equipmentby Reference TV set(For example, RB1)Check the below point atConnector side・Check +5V line CL3645・Check HPD line CL3628・Check DDC lines CL3614/CL3615・Check TMDS linesReplace R3645DDC lines NGTMDS lines NGAll lines NGCheck the settings ofSource equipment,cableTarget board & other TVset both NGOther TV setOKIs using HDMI splitter ?NOYESConnect Sourceequipment directlyReference TV SetOKReplaceRB3602,R3662,R3663ReplaceCN3602ReplaceRB3617,RB3618,RB3609,RB3610NGNGIC1000 NG+5V line NGSpec:4.7~5.3V+5V line OKand HPD line NGSpec:2.4~5.3VChange B-Board.And inform the designer of it IC1000 NGAnd inform the designer of itReplaceR3626,R3633,R3638,R3642,Q3601NGCheck HDMIcableOKNG Change HDMIcable614.5 NO PICTURE: HDMI 4