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Ln40a450c1d red light - Samsung Televison & Video

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I have a Samsung LN40A450C1D TV that has sound but the backlight doesn't come on. I replaced the power supply board and same problem. I then replaced the backlight inverter. Same problem! I'm absolutely...


You have to check all the voltages, that comes from its main power supply board, to its back light inverter board. These is one pin at the backlight inverter board; comes from the main board; which controls the back-light inverter to start and off. This voltage is generated at the main board, and send to the back-light inverter board, as control voltage. It will be best to contact any service technician. If you wish to get some details; check the site linked here.Viewing it in "Mosaic" will make surf easy.
http://electronicshelponline.blogspot.com/

Feb 24, 2014 | Samsung LN40A450 LCD TV

1 Answer

Samsung LN32A330J1DXZA will not power on. Problem occurred after moving TV from one house to another. Samsung Capacitor repair came out and pronounced it a dead main board and did not perform any...


reset the c.breaker or replace fuse in the main panel service from your home 2) test the power cord 3) test the switch 4) see if the fuse or c.breaker inside is tripper or replace fuse and try again.

God bless you

Nov 03, 2013 | Samsung BN41-00965A BN94-02070A...

1 Answer

Please describe your i have no picture on screen on my samsung ln40a450c1d


For more details type in this site name "Electro-help" either to Google or Yahoo search box [not in the address bar of your browser], and click search or press Enter. It is an electronic equipments service help site.

Note the position of hyphen in between words in site name. The site will appear as it is in web; subtitled as Service help to electronic home entertainment equipments.

Pull up older posts.

You can locate this site name, either at the bottom part of first search page, or at the top of second page.

Detailed descriptions are there to help you.

Sometimes, clicking on advertisements by the side and bottom of each post might help you to get details about the availability of spare parts; price and more.

See matter in detail. Pull up older posts.

Jun 05, 2012 | Samsung Televison & Video

1 Answer

Samsung ln40a450c1d no picture on screen when pressing the channel button it blink only with a low grey look no sound or picture thanks


Good day!!!!


That problem is usually cause of faulty capacitors on the power supply board..

Just follow this instruction to fix your TV..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter

Jun 05, 2012 | Samsung 460UX-2 LCD TV

1 Answer

Samsung lcd tv 40" model#ln40a450c1d.


try changing the aspect ratio to 16:9 if not it could be a burnout.

May 20, 2011 | Televison & Video

2 Answers

Some keys on the keypad are not working, like the del key and the letter p


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Feb 19, 2011 | RIM BlackBerry Bold 9000 Smartphone

1 Answer

Samsung model ln40a450c1d.TV is dead. all fuses good. Some power in power supply. Wont turn on.


Some power? I would recommend you should get a sams photofact reference on your set and find out what voltages you should have at all exit points from the power supply.

I did find this entry on some people who had similar problems.
If you are handy with a soldering iron and not afraid to take apart the set give this a try!

Because the Samsung LNS4051D would not turn on and the power LED would blink 4 times and the relay would click and this would repeat again and again. I replaced power supply board parts CM806, 811, 812 & 817, all 1000 uf 10v capacitors, three had their tops bulged up slightly that I missed on initial visual inspection. After seeing the reports of problems with these caps on http://www.fixya.com/support/t1336881-will_not_turn_or_off , I replaced them with Radio Shack part 272-1032, 1000 uf, 35v. They are slightly bigger, but fit OK. TV is working fine now. Cost was 4 x $1.59 = $6.36 plus the time. I saved between $100 to 300 in the process of either replacing the board or getting the unit serviced. If you are not comfortable replacing components which means using a soldering iron, you can replace the power circuit board, available from http://www.discount-************/ProductDetails.asp?ProductCode=1030952-SAMSUNG&&Click=46

Oct 11, 2010 | Televison & Video

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