Re: Samsung LNT4069FX/XAA no picture with sound
Does the power LED ever stop blinking? Sounds like main board.
Does the power LED ever stop blinking? Sounds like main board.
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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. -
Re: Samsung LNT4069FX/XAA no picture with sound
WooooWhoooo ...... Mine is fixed .... Just like Ceconomon said, it was the Logic Control or AKA the FRC Board (Frame Rate Controller). Here is the deal that I later found out too. The model TV we have was one of the first generation 120 mhz LCD television and those LCD's had a seperate FRC Board and Main Board. They have since combined these two boards into the main board. Ceconomon solved my issue when he said he replaced the FRC Board as I had already replaced the main board, the T-Conn and the power supply. I had no idea that the FRC board is usually part of the Main Board and that mine were seperate. Thanks again for the help and my TV starts up like a brand new one now.
Tomm66, my LED Power light continued to blink red after I put the new power supply in it. Now that I have replaced the Logic Board it burns a solid red I think while the tv is operating. The logic Board is the small board above the main board and under the metal frame piece. It only has three wires attached to it and two go to the T-Conn and one goes to the Main Board.Comment
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Re: Samsung LNT4069FX/XAA no picture with sound
Most newer Samsung TVs have the FRC on the T-con. I always disable the effect, the picture never looks right with it on.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 LNT4069FX/XAA no picture with sound
Look above at FRC board then, seems it may be a common fault.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 LNT4069FX/XAA no picture with sound
I also replaced the Logic Control or AKA the FRC Board (Frame Rate Controller) but no change.Comment
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Re: Samsung LNT4069FX/XAA no picture with sound
Well those are pretty much the only parts in the tv that are replaceable. Main board, power supply, t-conn, and logic board. If you are still getting the white screen and sound I would bet you have a bad logic board still. Otherwise, I have no clue and would suspect a bad LCD panel.Comment
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Re: Samsung LNT4069FX/XAA no picture with sound
now, i am suspecting that one the board i purchased might be a bad one. the logic board and power supply are new as claimed by the seller. i need to figure out a way to test which one is defective without spending to much. sigh.. ):Comment
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Re: Samsung LNT4069FX/XAA no picture with sound
found the problem. the main board that i purchased is defective. original tcon, power supply and main board are all working properly. only the logic board is defective. finally i got it to work. thanks guys!Comment
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Re: Samsung LNT4069FX/XAA no picture with sound
So it was the logic board .... glad to hear that you got it fixed and working ! I am enjoying having mine back too. Thanks again Ceconomon.Comment
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Re: Samsung LNT4069FX/XAA no picture with sound
I replaced FRC board to get mine working. However, when I measured the voltage on pin 4 of IC107 the voltage still measured about 1.79 volts. I am assuming this is about normal and the biasing of IC107 is different than that of IC102. The television appears to be working fine after replacing that board.Comment
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Re: Samsung LNT4069FX/XAA no picture with sound
I want to confirm that 1.8V on pin 4 is correct and with accordance to the datasheet . Same tv with white screen issue. Looks like tcon or FRC board , still digging.Comment
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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... -
Hi,
I got Samsung 55 inch QLED QE55Q67RAT where there is no sound at all and when using youtube for example picture is not clear and noisy.
I have swapped Burr-brown 88002A chip on the mainboard but didn't help, different set of speakers didn't help either
Mainboard is based on pcb BN41-02695A BN94-14007B
I will appreciate any help
Many thanks
Marek...
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