Samsung PN58B650S1F Power Board Clicks, No Picture

[geeforce]

Re: Samsung PN58B650S1F Power Board Clicks, No Picture

.Sorry for butting in this thread, I have a e series plasma TV made in 2012 by Samsung, it seems to have the same problem as yours, the stand by voltage and lights are all good, when I turn it on the vs and va voltages are perfect, but the logic board and red light all blink and the TV displays a flash then a snow effect then turns fully off, then it turns itself on again and does the same thing over and over until I unplug the mainboard from the power supply, I don't know how to force turn on the power supply without the mainboard.

Do the panel test, will bypass mainboard.

[Andrew F. Ali]

Re: Samsung PN58B650S1F Power Board Clicks, No Picture

.Sorry for butting in this thread, I have a e series plasma TV made in 2012 by Samsung, it seems to have the same problem as yours, the stand by voltage and lights are all good, when I turn it on the vs and va voltages are perfect, but the logic board and red light all blink and the TV displays a flash then a snow effect then turns fully off, then it turns itself on again and does the same thing over and over until I unplug the mainboard from the power supply, I don't know how to force turn on the power supply without the mainboard.

I think your PSU is good but I will tell you how to self-test your PSU.
1. Take two (2) 120Vac household light bulbs and connect them in series as a 'test lamp'.
2. Disconnect the PSU from the Main, Y-Main and X-Main Bds., so the only connector that remain is the ac inlet cord.
3. On the connector that would have gone to the Main Bd., using an insulated wire connect the VS-ON and the STDBY pins.
4. On the same connector, using an insulated wire connect the PS-ON and the GND pins.
5. take the test lamp and connect it across the Vs and GND pins on the connector that would have gone to the Y-Main Bd.
6 Verify all connections you made are isolated and not shorting on any pin/s that it is not supposed to be connected to.
Plug in the ac cord.
7. If the PSU is working the test lamp should light up bright and remain lit.
8. Measure Va, 15v and all other voltages the PSU is supposed to produce and all voltages are present then PSU is GOOD.
9. If test lamp does not light up, unplug the ac and recheck connections are solid and in the correct places as described.
10. If everything is correct and no light up then PSU is defective.