Re: Samsung LED TV driving me crazy
I live in the foothills west of Boulder, at about 8300 feet. We had a lightning season for the ages up here. Rarely have I been frightened by electrical storms, but I was more than once this year with lightning striking repeatedly for 30-60 minutes at a time very close to the house -- in an area which has already had several devastating forest fires in recent years.
Rossputin
Member
Last Activity: 04-15-2014, 04:15 PM
Joined: 09-09-2013
Location: Boulder, CO
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Re: Samsung LED TV driving me crazy
I THINK I FIXED IT!!!!!!!!!!!!!!!!!!!!!!
I took the PS board off and started slightly bending it in the area where I had been pushing and causing it to turn on.
And wouldn't you know it, when bending it I saw a piece of solder move!!!
There was a leg of a small transformer whose solder joint to the board had broken off.
The transformer is thick enough that when I pushed on the board, the body of the transformer pressed against the chassis, and the angle of the transformer leg moved so that it...Leave a comment:
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Re: Samsung LED TV driving me crazy
So, I had the connector removed and resoldered and the problem didn't go away.
At this point, I also don't think it's the cable because I flipped the cable, which means all the pins are using different wires than before, and the effect is the same.
Here's the story:
When I push on the connector OR on the edge of the board just above or below the connector, the board works. But I don't think the connector itself is bad, nor the cable.
I'm guessing there's something physically wrong with...Leave a comment:
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Re: Samsung LED TV driving me crazy
That's a good point. I'll at least ask him to inspect.
There are 18 pins very close to each other. Somewhat afraid of messing it up.Leave a comment:
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Re: Samsung LED TV driving me crazy
It just says rosin core.
But it's in such a tight spot that I almost messed up the solder on the next pin, so I'm just going to take it to a guy I know who will take care of it for no more than $20, and maybe less!
Isn't it funny how long it can take, and how many headaches, to find such a small problem?Leave a comment:
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Re: Samsung LED TV driving me crazy
One of the pins on the connector on the back of the board has no solder on it.
I tried to solder it myself, but I could not get the solder to stick to the pin or run down the pin to the board, and I'm afraid to mess it up so I'm going to take it to a local tech repair guy who's reasonably priced.Leave a comment:
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Re: Samsung LED TV driving me crazy
I'll give it a try...need to make sure I have small enough tip for soldering iron and make sure I don't end up shorting stuff out!!!Leave a comment:
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Re: Samsung LED TV driving me crazy
I can only easily access half the pins, because the other half are concealed under the connector.
the half that I can access are working in the sense that there is zero resistance between the pins on the ps board and the matching pins on the main board. but that's just half of the pins, and it still doesn't prove that the connector on the ps board is actually connected to the board.
in fact, since giving it a little push makes the TV come on, I'm thinking that there's a bad connection between the ps board and the...Leave a comment:
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Re: Samsung LED TV driving me crazy
Wow, you are a genius!
I pushed on the connector with a pencil eraser and the TV came on. And then I pushed on the edge of the board near the connector and the TV came on.
Amazing.
So, does this imply a loose connection between board and connector? Should I remove board and look at the back side of it?
The more specific the instructions, the better for this relative novice... I'm reasonably comfortable doing my own soldering if that becomes necessary.Last edited by Rossputin; 11-10-2013, 10:25 AM.Leave a comment:
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Re: Samsung LED TV driving me crazy
And I've also just discovered that I can make the TV turn on by simply touching one of my meter's test leads to any pin on the connector on the power supply side but it makes no difference if I touch the same lead to the pin on the main board that's connected to that power board pin! I don't even have to have the other lead touching the chassis to make the TV turn on!
Is this starting to sound like a bad power board, or a bad ground somewhere???
Any advice on what to check now would be much appreciated!Last edited by Rossputin; 11-10-2013, 09:41 AM.Leave a comment:
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Re: Samsung LED TV driving me crazy
I just tried same voltage test on pins on main board and they do not see the voltage, nor does TV turn on, even though cable shows 0 resistance between two ends of the cable.
In other words checking voltage at pin on power board will turn on TV but checking voltage at pin on main board which is connected to same pin on power board will not turn on TV.
What does this mean??? Help!!!Leave a comment:
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Re: Samsung LED TV driving me crazy
(This was an error...deleted)Last edited by Rossputin; 11-10-2013, 08:20 AM.Leave a comment:
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Re: Samsung LED TV driving me crazy
OK, now this is really crazy but makes me think that I might not be too far from a solution, if any of you electronics experts can help me:
The larger of the two connectors between the power supply and the main board appears to have two rows of 9 pins each.
When I test the voltage between ANY of the accessible pins that come off the power board and into the bottom of the connector, with pos lead on pin and neg lead on chassis of TV, the TV turns on!!!!
I hope I'm describing this well enough...let me elaborate...Last edited by Rossputin; 11-10-2013, 08:38 AM.Leave a comment:
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Re: Samsung LED TV driving me crazy
I'll check it...there are two cables from main to p.s. I'll look for 5v label.
Is it possible for boards to short to chassis???...Leave a comment:
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Re: Samsung LED TV driving me crazy
I should add that there is a small button on the main board and that after the first short quieter click, if I push that button, it makes the loud click happen immediately, and then the cycle continues.Leave a comment:
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Re: Samsung LED TV driving me crazy
I really don't know where to measure voltages...but it sounds like this clicking power supply is a fairly common problem. it's just weird that I got a bad power supply to replace a bad power supply.Leave a comment:
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Samsung LED TV driving me crazy
Hello all,
We had an electrical storm which damaged some equipment including Samsung UN46C8000.
I bought replacement (used) power board.
TV would just click (soft click, short pause, loud click, long pause, repeat) at what I assume is a relay on the power board.
I then bought a new (used) main board.
TV worked for 5 minutes, then returned to the behavior described above.
At one point, I think disconnecting ribbon cable to T-CON made the clicking stop (but obviously the TV didn't otherwise work). Now, disconnecting that...Last edited by Rossputin; 11-09-2013, 09:41 PM. -
Re: Samsung UN46C8000 LED tv not powering on
I took a look at the basic troubleshooting document, and frankly most of it is beyond me, unfortunately!Leave a comment:
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Re: Samsung UN46C8000 LED tv not powering on
OK, found the BL_ON and PS_ON. I have no way to turn TV on, though. Can only plug it in. When plugged in, no voltage on any pin in the connector to main board that includes the two pins just mentioned.
Is there any way to try to turn on the TV without the little icon of a power button on the bottom glass that also functions as the switch? (Also, no response when pushing power button on remote.)
So far, the only thing I find voltage in is the power cord!Last edited by Rossputin; 09-10-2013, 07:58 AM.Leave a comment:
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Re: Samsung UN46C8000 LED tv not powering on
Pics as requested...can send more hi-res if these aren't good enough. Last two are just details of part numbers.
I disconnected the two cables from power board to main board, but not sure what I'm supposed to look for when I plug TV in after that...
No obvious sign of life when I plug TV in.
Is there anything I can test with basic ohmmeter or voltmeter that would give more clues?...Leave a comment:
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