Samsung LNT3253FX/XAA no picture with sound
First of all Hello everyone and yes I am new to this forum, but not new to broken TVs and computers. I am a Asst Tech manager at a computer shop here in MO. I have been lucky and fixed 3 of these broken Samsung TVs. I just got this from a friend about a week ago he works at a recycling place and gave it to me. Well the good old TVs has sound dim back lights and no picture also has no blown caps on power board. I think i have a bad fuse on my t-con board not sure might be the main board. I see that there has been post of the same problems but never seen the fix. I need some help guys and thanks in advanced going to post some pics
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Re: Samsung LNT3253FX/XAA no picture with sound
So the screen has a slight glow to it if you have darkened room, or you can see the backlights through the holes on the back of the LCD panel? If you do, then you backlights are OK, then it can be T-CON with blown fuse or not getting the 12 or 5V to it.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=24809 -
Re: Samsung LNT3253FX/XAA no picture with sound
Thanks for reply yes it has both slight glow and can see all the lights in the back of the tv and audio. Here is some pics and thanks againAttached FilesComment
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Re: Samsung LNT3253FX/XAA no picture with sound
Check F1 and F2 (at the right of the bottom connector) and also use the Ohm meter to check C1, 2, 3, and 4.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 LNT3253FX/XAA no picture with sound
Hello I checked what you said with multimeter F1 fuse is broken no beep F2 beeps ok and C1, 2, 3, and 4 ok all same ohms. What should I do next jumper the fuse and test or replace it. Thanks againComment
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Re: Samsung LNT3253FX/XAA no picture with sound
Check from both ends of the fuse F1 to the metal chassis. You should see a very high resistance if only the fuse is at fault, but if you see a few ohms (<2 ohms) there may be a problem on the T-con.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 LNT3253FX/XAA no picture with sound
Thanks for all your help I am at work right now I had brought the T-Con board in with me but the TV is at home. I will try the ground test tomorrow and get back with you. One more question what if I just soldered one wire to both ends jumper and tried it???? Just wondering if it would do any other further damage to the Tv !!!Comment
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Re: Samsung LNT3253FX/XAA no picture with sound
You can test relative to the screw hole metal pads too.
In the worst case it would probably emit a little smoke. It's possible it could damage the main board but I'd call it unlikely. The best option is to use a 3 amp mains or automotive fuse.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 LNT3253FX/XAA no picture with sound
Thanks a million ran jumper on the broken fuse and the system has been working for two days now. MAN YOU ROCK thanks again
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Re: Samsung LNT3253FX/XAA no picture with sound
That is good that it did not have any shorted out parts on the board.
You can get the new SMD fuse and just piggyback on top of the old blown fuse and solder both ends of the new fuse to the old fuse.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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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... -
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I ordered a supposedly ‘new' Tcon board this time, and... -
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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.
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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... -
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