Question about Samsung LW20M21C 20 in. LCD Television

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Samsung LW20M21cpd I am looking for the number of the power supply regulator I/C. It is marked as IC101 on the circuit board. it is 6 legged devise but has blown a hole in the casing so the number has disappeared

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6 Suggested Answers

SOURCE: spn4235 42" Samsung Plasma 6 years old

you can get the power supply and/or the service manual (with schematics included) here.
http://www.samsungparts.com/search/search.asp

Posted on Jun 22, 2008

  • 304 Answers

SOURCE: Samsung TV Power Supply Board

I doubt that moisture damaged the SMPS bd.
There are many circuit boards in your set and it will take a trained samsung tech to find the problem.

Posted on Jul 17, 2009

  • 2267 Answers

SOURCE: Samsung Power Supply Board

The power supply part number is BN44-00159A. You can also download the info from this link. It's the service manual.

Posted on Jul 17, 2009

Cool_dud 09
  • 206 Answers

SOURCE: power supply board

Hai,
Please check on here....you will find it out!

Posted on Aug 23, 2009

budmrtn
  • 11361 Answers

SOURCE: Samsung power supply & IP board BN44-00264B &

Please see here:

http://www.shopjimmy.com/samsung-bn44-00264b-power-supply.htm

You have verify the LCD panel.

Basic LCD monitor and TV troubleshooting guide:

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting

http://www.fixya.com/support/r7406380-tv_training_manuals

Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com

Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.

Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Posted on Jun 01, 2011

mislamy15m
  • 2 Answers

SOURCE: Circuit diagram Samsung LE23R88BDX - LCD TV

when I turn off and then Turn on after 10 minutes the TV notwork(by using remote or touch button). I try to disconnect power supply andthen reconnect and waiting a couple of minutes and turn on but no work (nosound and black desktop) .I repeat this procedure many times so some timework and sometimes not work. please help me to solve this problem

Posted on Aug 28, 2011

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Sounds like The main power supply regulator section circuit fault. Either it will be a separate board, or the part of main 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. 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.
BN44-00341B - will be the number of power supply board used with this TV. Check it. If so, visit the site linked here to see its circuit diagram. Try to follow it, and do a repair work, or replace it.
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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.

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Fault in 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. 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.
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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 precious time.

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http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.

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http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis.

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Hello
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10_14_2011_6_29_21_am.jpg10_14_2011_6_29_50_am.jpg
I hereby attaches two pictures. On the first one you can see a good capcitor with flat top and the same type of bulged [damaged] one. On the second picture, you can see two bulged capacitors [arrow marked] and goond ones by its side.
10_14_2011_6_32_25_am.jpg
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2 Answers

I need to know the ic of the power supply (IC101) since it is blowed up of an LCD samsung LM 20m21c


Check the picture below to find IC101 part number. It appears to be a 3.3 voltage regulator.


e037b2b.jpg

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