Question about Samsung LN46A750 45.9 in. HD-Ready LCD TV

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I have a problem with the power supply board with my TV (Samsung LN46A750). I had a fuse blown and tried to replace it (with a like fuse, of course). Replacing that fuse and attaching the power cord let to not only the new fuse blowing again, but also one of the disc shaped capacitors on the board (it let out a loud spark!). Obvioulsy I need a new board. My question is; is this something I have to look forward to every 2-3 years or was this my punishment for not having my TV surge protected? I appreciate any and all feedback! Thank you to whoever lends assistance!

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Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.

Posted on Apr 25, 2017

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Posted on Jan 02, 2017

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SOURCE: Samsung LN-S4051d power supply board

The replacement of the power supply is quite easy. You will have to remove the base if applicable and the back cover, once you remove it; you should see the power supply.
Click here to see how the power supply looks like and availability or Click here to find a cheaper one.

I can also repair your power supply. If you need further assistance you can write to jah2mil@hotmail.com

Posted on Jan 05, 2009

  • 1 Answer

SOURCE: Samsung LCD TV doesn't power on, just blinks 5 times

After about 5 years the Samsung LCD televisions backlight fails which prevents the TV from coming on and the powerlight just flickers the backlight can be changed but it is often alot easier and cheaper to buy a new Television

Posted on Sep 23, 2009

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SOURCE: Which Replacement Power Board for LNT4665F Samsung LCD TV?

Howdy,
It would be a lot cheaper if you just replace the two caps that have gone bad. Just get a cheap solder pencil from the store and about an inch of solder and you are in business.
The Power Supply Board is the center Board (towards left) after you remove the back off the TV. Remove Board from TV with the 6-7 screws. Replace capacitors CM852 & CM853; 2200ufd 25volts.

Thaks for using FIXYA, BIG IRISH.

Posted on Jan 02, 2010

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SOURCE: Samsung TV won't turn on- trying to fix it. A challenging problem

People if you can fix your tvs thats great! However please understand there is a incredible amount of HIGH VOLTAGE running through any television and if you do not know what your doing it can be fatal. please be careful.

Posted on Mar 11, 2010

brownline45
  • 310 Answers

SOURCE: Samsung LN40A530P1F LCD TV keeps blowing main

good day. your power supply is defective. maybe the regulator is shorted. you need a qualified technician to fix your problem.

Posted on Jun 22, 2010

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Fault with the main power supply regulator board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time.

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I have a problem with the power supply board with my TV (Samsung LN46A750). I had a fuse blown and tried to replace it (with a like fuse, of course). Replacing that fuse and attaching the power cord let...


Power supply board have power surge parts,but not totally dead,it just giving to much power some where,that why it keep killing ur fuse.This problems,u must have great electronic skills to track it down.Tries websites like Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.Power surges are rarely happen,but the surge protector will stop massive power will go the protector when it happen instead all the power will go to the tv itself.

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Most likely failed capacitors in the power supply. I recently had the same problem with my 26 month old Samsung LN46A750. Samsung paid for the installation of an upgraded power supply board.

http://www.thebuzzmedia.com/samsung-tv-capacitor-clicking-issue-and-free-repair/

http://www.avsforum.com/avs-vb/showthread.php?t=1198409

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Most likely failed capacitors in the power supply. I recently had the same problem with my 26 month old Samsung LN46A750. Samsung paid for the installation of an upgraded power supply board.

http://www.thebuzzmedia.com/samsung-tv-capacitor-clicking-issue-and-free-repair/

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Most likely failed capacitors in the power supply. I recently had the same problem with my 26 month old Samsung LN46A750. Samsung paid for the installation of an upgraded power supply board.

http://www.thebuzzmedia.com/samsung-tv-capacitor-clicking-issue-and-free-repair/

http://www.avsforum.com/avs-vb/showthread.php?t=1198409

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1 Answer

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Most likely failed capacitors in the power supply. I am currently having the same problem with my 26 month old LN46A750. Samsung has agreed to fix this as an out of warranty "courtesy repair".

http://www.thebuzzmedia.com/samsung-tv-capacitor-clicking-issue-and-free-repair/

http://www.avsforum.com/avs-vb/showthread.php?t=1198409

Sep 28, 2009 | Samsung LN46A750 45.9 in. HD-Ready LCD TV

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