Question about Samsung LN40A550 LCD TV

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LN40A550 I think maybe there is parts missing I bought it on ebay I need to see one with back off. or maybe wireing dirgram Thanks Bobby

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  • drewapicture Mar 30, 2009

    hello, the link to the website does not work, could you repost it? or post part #'s. thanks andrew.


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I do not have one of this LCDs to open it but you can check this website for a list of parts that should be inside it.
It should have the following parts:
Power supply, main board, LCD controller, backlight inverter board and key controller board.
Hope this helps you.

Posted on Jan 28, 2009

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Hi I have teviono 42" lcd4203id model and tv is white picture nothing on there the TV powers up light comes on but it doesn't bring picture what the fault would be?thanks


eBayTEVION 42" FLAT SCREEN LCD TV MODEL LCD4203ID in Sound & Vision, Televisions ' eBay.Missing: white

main board for tevion lcd4203id 42" lcd tv mhdv4201 ... - eBay > ... > Other TV & Home Audio Accs.

eBayMAIN BOARD FOR TEVION LCD4203ID 42" LCD TV MHDV4201-ZC01-01 (B) ... Mouse over image to zoom .... *Please open the back cover of TV then check the part number of screen, it would be on white label at back of screen ... of actual item in yourTV as well as check either if it is compatible with your TV model.

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Dec 29, 2015 | Televison & Video

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I have a samsung 40in LCD Model No. LN40A550. I turned it on and it made an audible pop. The television now cycles on and off and eventually powers on. The only problem is it's taking anywhere from 20...

From what I have experienced, I'm guessing the pop you heard was capaciter blowing out. If you take the back off and look at the power supply board, located in the lower center, you will probably see at least one capacitor (maybe more) where the top is swollen or poped out. You can find replacement capacitors at radio shack. If you know how to use a soldering iron, it is a simple replacement. If not, find a friend who does. This can be a very inexpensive fix. You can also find videos that show how it's done on youtube.

May 01, 2011 | Samsung LN40A550 LCD TV

1 Answer

Samsung LN40A550 is very slow to come on.

Lets try this...
Open unit, than check capacitors on PCB power.
There are 1000uF / 10 V. That capacitors leaked and almost explode.
Change with 1000uF / 25 V.
I hope it will help you.

Feb 15, 2011 | Samsung LN40A550 LCD TV

1 Answer

My lcd sylvania will not come on. It has the ready red light, but when you press the on button, it goes green then back to the ready red light.

Power board or main board.

Pick one, buy, replace and see what happens.

At $72 delivered to you I think the power board is the easier choice:

I am not anyhow associated with the seller, that was just what eBay gave me.

Of course if you're handy with a DMM you shouldn't need that...but this is the fastest and relatively cheap, considering you can always re-sell the board, way to check.

Hope this helps...if it does, don't forget to rate it :-)

Bobby @

Dec 03, 2010 | Sylvania LC420SS8 LCD TV

1 Answer

Where can I ourchase a power supply board for a samsung LN40A550 LCD TV

I don't know if they have the part in stock at the moment but I purchased one from ModusLinkPTS can go to their website where you can purchase one online ...I live in Trinidad in the West Indies and I got one delivered to me last November ... hope that helps you

Ian Jack

Oct 16, 2010 | Samsung LN40A550 LCD TV

1 Answer

Our 22 in Samsung Series 3, 350 only has sound, no picture. Is this a simple problem to fix?

Yes,Ur LCD inverter backlight board is dead.Replaced this LCD inverter backlight board,will get ur picture back.Tries these Websites, to buy a refurbish LCD inverter backlight board for the replacement.The board is long in shape.

Mar 17, 2010 | Samsung LN40A550 LCD TV

1 Answer

I need table stand go to the support page you can order that missing part from them.

You can also try to to find it just maybe someone may be selling theres

Jul 18, 2009 | Sony Bravia KDL-46V4100 46 in. LCD HDTV

2 Answers

I bought this on clearance. I hooked it up and

Samsung LN40A550 LCD TV

This is probably the LCD Controller (T-CON) board connections. This is a small board with 2 flat cables connected to it which run to the LCD screen. The connections with the flat ribbons needs to be reseated. The heat makes the connections misaligned. This board is usually covered by a metal shield.
When you reseat the connections, run the set for 15 minutes to see if it works before replacing the back cover. You may have to reseat it again.
Remember, handle electronics boards by the edges, no static electricity, and do not touch the connection contacts.
At worst you would need a new board. ( has it for ~$90.00usd)

May 09, 2009 | Samsung LN40A550 LCD TV

1 Answer

New Samsung LN40A550 LCD TV: picture is not crisp.

If you play with blu-Ray with HDMI, you will see the amazing picture quality.
I guaranty.

Jan 27, 2009 | Samsung LN40A550 LCD TV

1 Answer

Magnavox 42MF230A/37 Plasma TV should i fix it? ?

you will need that part to repair yours. i recomend using the heatsinks from yours. u need to check the FETs on the board that drives that one before u power it up, or u could damage the new part.

Dec 05, 2008 | Philips Magnavox 42MF521D/37 Television

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