Chosen Solution
I have the typical samsung blinking red light with the TV not coming on. So far I have pulled the back cover to inspect the power supply. All capacitors look good. Next I disconnected the main board from the power supply and the led panel lit up so I would think it’s safe to say the issue isn’t the power supply. Any suggestions on where to go from here?
@srafferty05 yes your boards do not seem to show any pbvious damage. Samsung does have issues with the capacitors on the power board and for now we know that your backlights get power. I would still suggest you measure the outputs on the boards connectors to verify that everything shows up as it is supposed to. This could be a T-on board issue as well as a main board issue. Measure the fuse on the T-con board (just above and to the right of the connector coming from the main board). See if you have a. continuity and b.power going to it when you turn your TV on. Couple of more things you can check (I did not even ask. You do have a multimeter?) Check Standby: A13V(Always ON) to the main board. It should measure between 7.5V and 12.7V (all voltage are DC)Turn the TV power on: PS_On should be between 0.2V (when off) to 3.3V (turned on) if you do not get that voltage its’s your main boardThe A13V is then raised to the ful voltage level of 12.7VBLU_PWM should measure 0.9V~3.3V. Backlight on/off and Backlight PWM signal level control. (0.2V at minimum brighness to 3.3V at max brightness). Since you get the blinking light you also want to check this In STBY check LED ind for 1.7V and VCC for 3.3V. If it is missing the STBY voltage check the power board connection to the main board. If STBY is okay your number 1 suspect is the main boardCheck SDA, SCL for 3.3 V after you power the TV onOf course also check your button bar and your IR board to make sure they are getting signal and allowing to turn things on.
@oldturkey03 I dont seem to be getting power to the plug going to the main board. Does this look like its burned up? Wires look burned to me…
