175. Sound problemNoCheck the cable between thespeakers and main board is OK?No sound or sound abnormalCheck the TV is muted, adjust thevolume or enter the menu to reset?Reinsert the audio cable orchange the TV systemReplace the cableReplace the speakerReplace the main boardNoYesCheck the speaker resistance value is in spec(Remark: The value is marked on the speaker)?Check the audio source connectionand the TV system are correct?YesNoYesNoEnter factory mode to do “Reset”NoAll manuals and user guides at all-guides.com