Samsung UN46ES7100F LED power issue

[tech2014]

The tv will work for a long time the when you try and turn off the tv, it won't power off. The only way to power it off is to remove the power cord. Then the power supply clicks a few times, and the tv finally shuts down. The power supply has a lot of transformers on it. I am thinking it is a bad solder joint somewhere. Any ideas? See power supply pic below.

[Diah]

Re: Samsung UN46ES7100F LED power issue

you mean wont go to standby with RC and TV side CP. did it do the same if it just power for few second to be on then you try to turn off?

[tech2014]

Re: Samsung UN46ES7100F LED power issue

yes, even after being off for several minutes, if you turn on the tv, then try and turn the power off, it doesn't work. If the tv has been off for a while you can turn it on and the tv will turn off, thats why i think its a p/s issue otherwise I would be a main board problem.

[Diah]

Re: Samsung UN46ES7100F LED power issue

PWB are servant do exact what main boards order it.. i tip on main boards main processor didn't react on off signal .... check other function on TV sources like HDMI PC or ells, to let it on then tun it off did the same fault

[tech2014]

Re: Samsung UN46ES7100F LED power issue

I reflowed the solder on the p/s and still doing the same thing.

[ReeceyBurger123]

Re: Samsung UN46ES7100F LED power issue

Seems like firmware glitch to me, tried reflashing firmware ?

[tech2014]

Re: Samsung UN46ES7100F LED power issue

So the tv seems ok when you turn the power on/off with the remote. If you remove the power cable from the tv,the standby LED stays on, the samsung logo is lit up, and the power supply relays click, as the red standby LED flashes. I have reflowed the solder on all the major components and also did a firmware upgrade, but it still acts weird.


Any thoughts??

[Diah]

Re: Samsung UN46ES7100F LED power issue

once i faced this issue at Toshiba 3D smart TV when i was visit a friend at home, he asked me of issue not powering off when TV stay long time on , i did factory reset it helped for beginning but after play Chanel change with RC it make same issue, changed new RC Batteries then it worked perfect, i think it was the RC send weak signal at other freq. which block the processor . hope this will help you.

[tech2014]

Re: Samsung UN46ES7100F LED power issue

Its worth a shot. I will try it and give an update.

[tech2014]

Re: Samsung UN46ES7100F LED power issue

no change. Trying to figure out if its a main board issue or p/s

[CapLeaker]

Re: Samsung UN46ES7100F LED power issue

As for me I agree with Reecey.

PSon and BLon come from the main board. So if those are held on, the PSU can't turn off. So verify the DC voltage on the PSon and BLUon pins when you can't turn the TV off. See what gives and report back.

[ReeceyBurger123]

Re: Samsung UN46ES7100F LED power issue

As for me I agree with Reecey.

PSon and BLon come from the main board. So if those are held on, the PSU can't turn off. So verify the DC voltage on the PSon and BLUon pins when you can't turn the TV off. See what gives and report back.

Cheers bud, seems too much like a FW glitch to me.

[CapLeaker]

Re: Samsung UN46ES7100F LED power issue

Right on, Reecey... We will see what happens to the PSon / Blon signals.