Can anyoone help me, this tv is complete dead.
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samsung ln46a540p2fxza no power
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Re: samsung ln46a540p2fxza no power
You've abandoned at least two repairs in your last posts. We like to actually fix stuff, not waste time. It's very frustrating when no reply come back.
How about some pictures? You've been here how long, and no pictures? No list of what you've tested already? Have you owned the set since new or ...?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.
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Re: samsung ln46a540p2fxza no power
tom66: i try two set, the sanyo wish i burn the power supply, i replay the i was jus goint to buy the power supply and the samsung wish they replaay and toll me that the screen was bad. i finish with both thread. Belive me i want to fix them too and i really apreciate your help.
this tv i tested the standby and there is no power. Pls. remember, iam trying to learn. I really want to learn.
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Re: samsung ln46a540p2fxza no power
Leave the TV unplugged, disconnect the large cable between the Main board and the power supply board, plug the TV in, the backlights should come on right away.
What is the P/N on the power supply-inverter board? BN44-???????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
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Re: samsung ln46a540p2fxza no power
You have power supply/inverter board combo, the two boards on the side are balancer boards with lamp current sensing transformers for each lamp. To verify if you have power supply-inverter board problem or the main board problem, you have to disconnect the cable as I suggested in post 6, if it does not stay on, then you have power supply-inverter board or one of the lamp draws too much current, you must follow my suggestion on post 6.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
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Re: samsung ln46a540p2fxza no power
If the backligts do not turn on the minute you plug the TV to the outlet with the large cable between the main and the power supply board disconnected, then you have bad power supply-inverter board or lamp over current problem.Last edited by budm; 01-12-2013, 11:59 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=24809
Comment
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Re: samsung ln46a540p2fxza no power
Very difficult. You had another SAMSUNG with same problem too right?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
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Re: samsung ln46a540p2fxza no power
This is one looks like your board:
http://www.shopjimmy.com/samsung-bn4...wer-supply.htm
BN44-00202A
Thanks to TOM66, he has the diagram for the board.
And this is how to test to find out if the lamp is bad.
https://www.youtube.com/watch?v=oE6K4xBVweAAttached 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=24809
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Re: samsung ln46a540p2fxza no power
Originally posted by ealequi View PostGood morning: i'm back. i am looking at this sch and i don't even know were to start. does anyone have an idea?Originally posted by budm View PostThis is one looks like your board:
http://www.shopjimmy.com/samsung-bn4...wer-supply.htm
BN44-00202A
Thanks to TOM66, he has the diagram for the board.
And this is how to test to find out if the lamp is bad.
https://www.youtube.com/watch?v=oE6K4xBVweA
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Re: samsung ln46a540p2fxza no power
Ok. I tested the power on and the 5.v on j850 and i am getting power,sudenlly i hear the samsung music and i can see in the back of the screen that it on. I get no picture. I turn it off and now went i turn it on it start clicking trying to turn on. My question, tom66 show me how to jump it getting power from any other source, Can i do the same thing here?
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Re: samsung ln46a540p2fxza no power
Hi.. I am sorry to post here my ask, I donĀ“t know the better place to do it.
I am Brazilian and need to Know more about free sites of schematics and Manuals because in my country it is very difficult to find.
if can you help me I will be thanks
I already found some sites: EletroTania, tgohome.eletronica Duartes.
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