187 Troubleshooting Guide7.1. No Power or No Display7.2. Bluetooth® Pairing Failure7.3. No Key Function (Touch Panel)7.4. No Remote Control FunctionPress the Power Buttonof Unit or Remote Controlto Turn ON the UnitNo Display onFL PanelCaution:1. AC Cord Plug-out2. Check Fuse(F1001) = 0 ohm3. Check Fuse(F1401) = 0 ohm4. Check Fuse(F1501) = 0 ohm[ refer to check point 1 ]Change SMPS PCBCheck Primary E-Cap (C1224)Measured 400V or more[refer to check point 4 ]Change SMPS PCB Change SMPS PCBChange SMPS PCBCheck Standby Regulator IC(IC2104/IC2108)Measured 3.3V at Pin 2[refer to check point 8 ]OK OKOKOK OKNGNGNGNGCheck Secondary Cap. (C1706)or Secondary Diode (D1703/D1705)Measured +40Change SMPS PCBNGCheck Primary E-Cap (C1403)Measured 200V or more[refer to check point 2 ]Check Secondary Diode (D1601)Measured +5[refer to check point 3 ]Change Main PCBNGCheck DC-DC Regulator IC(IC2107)Measured 1.55V at pin 3[refer to check point 9 ]Change Main PCBNGOK If No Display onFL PanelChange PanelPCBOKNG[refer to check point 5 ]Press the Power Buttonof Unit or Remote Controlto Turn ON the UnitPress [ PAIRING] on the Setor Remote ControlDisplay " BLUETOOTH"Change BT+TouchPanel PCB AssemblyNG"PAIRING' will display andblinking while handphone or otherdevices are Connecting to the SetDo the Cold StartAC Plug-out. Press and HoldPower Button thenAC Plug-IN, wait to display "-------"then will OFF the Set, back to start.NGChange BT+Touch Panel PCB AssemblyNGoption 1option 2The set will displayed the"CONNECTED" followedby "BLUETOOTH"No ProblemFoundOK KOKOPress the Power Buttonon the Unitto Turn ON the UnitIf CannotPower ON(No Display)Refer to 7.1OKNGUse Remote Controlto Turn ON the SetFL DisplayShow "HELLO"OK Press the Power Buttonsor Other ButtonsCheck and Ensure thatTouch Panel Connector isProperly InsertNGOK All Buttonsare WorkingIf Buttons are not WorkingChange the TouchPanel PCBNGOK No Problem FoundPress the Remote ControlPower Buttonto Power ON the Unit(Ensure have Battery & New)If CannotPower ON(No Display)OKNGPress the Power Buttonof the Unitto Turn ON the SetFL DisplayShow "HELLO"OK Press RemoteControl ButtonsChange Remote ControlNGOK All Remote ControlButtons are WorkingOK No Problem FoundRefer to 7.1Change IR Sensor/ Panel PCBNGNo Problem FoundOK