Chosen Solution
Samsung 40” inch Smart LED TV. Suddenly stop working one night. Standby light on. Trying to put on by clicking the power button causes the standby light to blink twice for 5 sequence in between delay. Update (02/24/2019)
Reading from connector CNM803 Pin 1 B13: 12.76V Pin 3 B13: 12.75V Pin 5 Vamp: 12.75V Pin 7 Vamp: 12.75V Pin 9 Gnd: 0V Pin 11 B5V: 5.24V Pin 13 B5V: 5.24V Pin 2 P_DIM: 2.90V Pin 4 ECO: 0V Pin 6 BLU: 2.91V Pin 8 Gnd: 0V Pin 10 Gnd: 0V Pin 12 A5V: 5.24V Pin 14 PS_ON: 3.11V
Thanks for the voltage readings however it is likely the psu, voltages will look normal when idle but drop when the psu is under load (power up). Have you checked visually the psu? Caps bulging etc.
Samsung does not officially support any blink codes. Start with checking the power supply on all connectors. Use the legend (silk screened on the boards) to do your measurement. Also, check all the fuses on the power supply. Next check the main board connectors and measure the power on the T-con board. Next to the connector from the main board is a fuse and you should get ~12V on that. Let us know what number your board is so we can at least try to find you a schematic for the PSU Update (03/02/2019) here is the fuse marked on your t-con board
