Samsung Samsung PN50A550 PN58A550 Troubleshooting [SM] free download

File name Samsung_PN50A550_PN58A550_Troubleshooting_[SM].pdf

Troubleshooting 4. Troubleshooting 4-1 Troubleshooting 4-1-1 FirstChecklistforTroubleshooting 1. Check the various cable connections first. - Check to see if there is a burnt or damaged cable. - Check to see if there is a disconnected or loose cable connection. - Check to see if the cables are connected according to the connection diagram. 2. Check the power input to the Main Board. 3. CheckthevoltageinandoutbetweentheSMPSMainBoard,betweentheSMPSX,YMainBoard,andbetweenthe Logic Boards. Samsung Electronics 4-1 Troubleshooting 4-1-2 CheckpointsbyErrorMode NoPower - The LEDs on the front panel do not work when connecting the power cord. Symptom - The SMPS relay does not work when connecting the power cord. - The unit appears to be dead. The SMPS relay or the LEDs on the front panel does not work when connecting the power cord if the cables areimproperlyconnectedortheMainBoardorSMPSisnotfunctioning.Inthiscase,checkthefollowing: Major - Check the internal cable connection. Checklist - Check the fuses. - Check the output voltages of the SMPS. - Replace the Main Board. 3 2 4 5 1 Check that the AC power cord is connected No Connect the AC power cord Yes Troubleshooting Procedures If LED is set up as being ON when No POWER-ON,checktheligt-oninLED Replace Fuse (FE801) Yes Is the AC Inlet socket connected? No Connect AC Inlet socket Yes Check the connection between Fuse FE801 No ,FB801,FS803forcheckingSMPS'sFuse Replace Fuse Yes No