Samsung lns4695dx lcd tv has blue power light no picture or sound I replaced the capacitors and checked the fuses I noticed that there is a humming noise coming from power supply board any hints or help would be great thanks
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Re: samsung lns4695dx blue power light no picture or sound
have noticed tha part# ip-40m-vmbc0624 what i think is a transformer is swollen and dark residue on the yellow tape around it. Also think that is what is making noise
please help
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Re: samsung lns4695dx blue power light no picture or sound
Do you own a digital multimeter?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 lns4695dx blue power light no picture or sound
yesComment
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Re: samsung lns4695dx blue power light no picture or sound
OK, post a picture of your power board and get the BN44-xxxxxx part number, if available.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 lns4695dx blue power light no picture or sound
bn-4400141aLast edited by mustangbub; 11-21-2013, 05:49 PM.Comment
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Re: samsung lns4695dx blue power light no picture or sound
pic coming soon..... will not allow me to upload pic for some reason
will try to fix and uploadComment
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Re: samsung lns4695dx blue power light no picture or sound
CHeck PM mustangbubComment
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Re: samsung lns4695dx blue power light no picture or sound
Attached FilesComment
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Re: samsung lns4695dx blue power light no picture or sound
When I heat the resistor up on the power supply board next to the main harness the picture comes on the tv and I have sound so does that mean the resistor is bad?Comment
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Re: samsung lns4695dx blue power light no picture or sound
More likely the caps get warm up so the ESR goes down then the power supply start working. Which caps did you replace? The small value 22~47uF 50V in the primary side also? I see about 11 small one in the pictures.Last edited by budm; 11-22-2013, 10:10 AM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: samsung lns4695dx blue power light no picture or sound
I replaced all the caps in that areaComment
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Re: samsung lns4695dx blue power light no picture or sound
All of these? Which areas?Attached FilesNever stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: samsung lns4695dx blue power light no picture or sound
I did not replace any of the ones u have circled but I also never heated them upComment
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Re: samsung lns4695dx blue power light no picture or sound
I think I can see the red resistor next to the connector, not sure the pictres are too out of focus to see what the resistor is for. Cold solder joints?Last edited by budm; 11-22-2013, 12:28 PM.Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: samsung lns4695dx blue power light no picture or sound
Yes cold solder jointsComment
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Re: samsung lns4695dx blue power light no picture or sound
So it is fixed?Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809Comment
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Re: samsung lns4695dx blue power light no picture or sound
Will get back soonComment
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Re: samsung lns4695dx blue power light no picture or sound
No not fixedComment
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Re: samsung lns4695dx blue power light no picture or sound
well changed resistor checked for bad solder joints and still not working. I am at witts end with this thing. i put blow drier on again and have picture and sound again for about 5 min. then shuts off again with no picture or soundComment
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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.
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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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