hi i have a plasma samsung there is no picture at all sound is there but the screen does not even flicker in the dark the logic board on it just flashes 1 green led it does not flash on the front just like its on but with no picture any ideas u guys thanks
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Re: samsung 58 inch plasma
First we need model numbers and clear pictures of the boards inside.the tv.
Time to start checking voltages. you need a voltmeter and test voltages from the power supply outputs to the y and z main boards. There are some plug in connectors on the power supply that go to these y and z main boards that are located on each side of the tv. First unplug tv. Take back cover off.
There is quite a bit of dc voltage in these TVs so be careful with what you are doing. Once you are there you need to locate the output pins for VS and VA. Set your meter on DC voltage auto range. Black lead anywhere like a screw lug on the chassis and red lead VS then VA when powered up.
Let us know what you find.Last edited by freakaftr8; 01-24-2014, 10:05 AM.Did I leave the soldering iron on? -
Re: samsung 58 inch plasma
Right it's started clicking and not powering up so im changing all the caps on the power board first it clicks then clicks and then clicks over and over but no soundComment
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Re: samsung 58 inch plasma
3 threads all on the same tv yet still no model number
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Re: samsung 58 inch plasma
saying "58 inch Samsung plasma clicking" is about as good as saying "my car won't start, it's a blue Ford."Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: samsung 58 inch plasma
It's a pn58b680 t6wComment
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Re: samsung 58 inch plasma
Any ideas when I turn it on it does not play the start up sound it clicks over and overComment
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Re: samsung 58 inch plasma
Could be main board, Y-main, X-main, panel.... how about some pictures?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: samsung 58 inch plasma
main board problem . Hard to find this board.Comment
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Re: samsung 58 inch plasma
I would start by disconnecting power lines going to Y and Z sustain boards, with tv unplugged. Then power on and see if it still clicks on and off.Did I leave the soldering iron on?Comment
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Re: samsung 58 inch plasma
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Re: samsung 58 inch plasma
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Re: samsung 58 inch plasma
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Re: samsung 58 inch plasma
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Re: samsung 58 inch plasma
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Re: samsung 58 inch plasma
on this one im getting a clicking sound on the power board im getting 202 from the vs then the power drops when the second click so it would be . CLICK 202V ........CLICK 201 200 199 198 and so forthComment
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Re: samsung 58 inch plasma
i have narrowed it down to being the av board
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Re: samsung 58 inch plasma
tom66 any places i could have a look on there to check voltage ?thanksComment
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Re: samsung 58 inch plasma
How did you narrow it down to main board? Did you do the test pattern jumper?Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Re: samsung 58 inch plasma
Well I have changed all the caps and I'm getting the right voltage to the main board and I think I may of caught a compasitor on the av board when I was checking it because it did power up just with no picComment
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Saved this beast from the landfill this weekend.
Manfactured July 2013 in Mexico.
I love working on plasma TVs.
Its been a while but I was lucky enough to find 2 this week.
The TV powers on and stays on but no picture. Havent checked for sound yet.
No bulging caps although the insides are pretty dusty and the boards are discolored from many years of high heat.
Will start troubleshooting tonight.
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Hi, I have a Samsung UE50TU with:
- sound and backlight, but no picture
- when it arrived, it had a picture for a few seconds
- it keeps rebooting
- without ribbon cable between the two panel boards, it does not reboot but I have no picture
- without cable between mainboard and lcd panel, it does not reboot (but obviously i have no picture)
- when i try a tape fix, its keeps rebooting, unless I tape off pin 1 (the innermost pin). In that case it does not reboot but I have no picture.
- without cable between mainboard and lcd panel and with a jumpered... -
TV was working fine and then just shutdown one day. It will not turn back on. I get a backlight for a little while, then it just clicks and won't fully boot.
I took off the back panel and did the basic troubleshooting and it seems like it's a panel issue.
The backlight will stay on if I disconnect either of the ribbon cables going to the panel. I've watched this video (https://www.youtube.com/watch?v=77tymvTJDxo) and am wondering if this could be the issue, just a bad cap on the panel.
Any assistance is appreciated. -
This was my main TV for the last 6 years. I'm not inclined to throw out a $2600 TV so quickly so I'm trying to investigate the issue.
Problem
TV was disconnected from power for 6 months during construction. When I plugged it yesterday picture was fine, after 30 seconds it dimmed then started developing horizontal lines, picture then starts to ghost vertically until it degrades into vertical streaks. TV always displays a perfect picture when cold. I can unplug TV for 5 minutes and plug it back in and picture is restored for 20 seconds. I can also keep it in standby mode... -
Hello all,
This is my first post, but long term lurker on the form learning as much as possible about these TV's. I was given this TV as due to a power outage of constant On/off of power to TV. The TV originally would just click on and off (Typical Reboot Cycle). I opened the back of the TV, and troubleshooted by taking the 96 pin LVDS off one at a time to see if I had a picture on either side. I finally fixed the reboot cycle by finding the error on the left side of the screen off connector CN 1301, and the TV would stay on. Further troubleshooting led me to the driver boards where...
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