Hi,I have this tv that when turns on and get a split second of snow then no pic.but sound continues, I have the back off and i can see that the backlights are on.any thoughts? could it be a bad panel? or hopefully something easier. thanks guys.
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Re: samsung ln40c500 sound no picture
Could be a bad T-con. I just did one where it had steady backlight and had sound, was a failed chip on the T-Con board. I would say it's either that or a mainboard issue. The main gives the signal to the T-Con and the T-Con turns the picture on. Usually with my experience which isn't that much but some, it loses sound if it's the mainboard. -
Re: samsung ln40c500 sound no picture
I am having trouble locating a service manual for this.anybody know where i can find one?Comment
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Re: samsung ln40c500 sound no picture
what can i check to determine if its tcon or main?Comment
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Re: samsung ln40c500 sound no picture
Look on the t con board. Most have a fuse labeled f1 and you can check for continuity and also the voltage on both sides of it. Also doesn't this tv have two ribbons going to the lcd panel cause its a 40in. You can also try disconnecting one ribbon cable at a time that goes to the panel and then turning on the set to see if half the screen starts working.Comment
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Re: samsung ln40c500 sound no picture
Some tv's mute the pic when no signal on the input. Does the menu does not show up as well ?Comment
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Re: samsung ln40c500 sound no picture
checked fuse,has 13v on both sides of it.disconnected one ribbon at a time with no pic at any time,the menu doesnt come up at all.I dont know if there is supposed to be more voltages present on tcon from main board or notComment
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Re: samsung ln40c500 sound no picture
Did you take one ribbon out then turn the tv on and test it then turn tv off and swap ribbons then turn back on. Cause if you swap them with the tv on it will short most of the time. If you did do it correctly I would say you need a t con board.Comment
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Re: samsung ln40c500 sound no picture
i did power it off when removing ribbons,luckily.a tcon would be about the best solutionComment
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Re: samsung ln40c500 sound no picture
is it a bad sign when shopjimmy has 165 tconn boards in stock?Comment
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Re: samsung ln40c500 sound no picture
If it powered off when you were doing the ribbons then you didn't test it correctly. You need to have the tv off and unplug one of the ribbons. Turn the tv on and see if you get a picture on half of the tv. Then turn the tv off and unplug the other ribbon and plug the ribbon you unplugged before back in. Then turn the tv on and see if you get a pict on half of the screen. If you unplug it while the tv is on it will short and the tv will shut off and you have to turn it off and back on to reset.Comment
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Re: samsung ln40c500 sound no picture
yes i did it just like you sayComment
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Re: samsung ln40c500 sound no picture
Ah sorry I read your response wrong. I would try the t con if removing each of them did not chane the image on the tv.Comment
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Re: samsung ln40c500 sound no picture
so i switch out the tcon board and now i have about a four inch band of up and down stipes.when i put the original t con in if has a black screen.any thoughtsComment
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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... -
I have a 60 inch Samsung UN60EH6000F flatscreen TV. The screen went black a few months ago Sound is good, backlight is good, no menu. I replaced the TCon board with a used board purchased from Ebay. It worked fine for a 3-4 months, then the screen started ‘fading' back. Once again, sound is good, backlight is good, no menu. However, this time the picture looks fine for about 10-15 minutes, then fades back. If I power cycle the TV, the display reappears, for another 10-15 minutes, then fades black again. Repeatable ever time.
I ordered a supposedly ‘new' Tcon board this time, and... -
Hello everyone,
Ive got a UE60KU6079 on the workbench that is giving me some headaches trying to troubleshoot.
The previous owner stated that there had been white dots on the screen which from the description sounded like some lenses fell of the backlight LEDs.
He had opened the TV from the back, trying to get to the backlight, supposedly gave up, reassebled everything and gave the TV to me.
I expected the worst like ripped COF cables or a cracked panel but could not find anything like that yet.
Anyway I still fully expect that there has been something seriously damaged... -
Hi all
I was just given a Samsung TV with the issue. I read various threads and videos and attempted the ribbon tape method to gain an image, but no luck.
Symptom:
No picture no sound.
When I plug in the power cord, Backlight LED turns on for a half second and then turns off. The red LED next to the power button located center bottom flashes 2 or 3 times. When the power button is pressed after, it does the same thing.
No sound at all.
What I tried:
1. I tried unplugging the left or right ribbon... -
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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