20 Most Recent Samsung LN-S4051D 40 in. LCD Television - Page 9 Questions & Answers

Tries Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.Put the old IP board back.Tries it again should work,if u didn't not burn anything in the Tuner signal board. Keep me in touch how it turn out!

take the back of the tv off there is probally 4 blown capacitors on the board on the left,change the 4 capacitors you can tell there blown they will be bulging. I had the same problem, changed the capacitors and tv works fine

The caps (capacitors) in the powerboard are going out. This is a very common problem in all class and price ranges of modern lcd and plasma tv's/ monitor's. I don't know if this problem has been like this for awhile or it just started, but either way, if the tv takes an abnormal amount of time to "warm" up then it most likely will go out all the way sometime in the (near) future. If you have a tiny bit of will and knowledge ypou can open the unit and get to the print board. Examine this for "popped" capacitors, they will have a buldging top instead of a flat one. Im gonna try to include a pic of them here, if i can get it this time, I've tried bfore lol. But you can google image a "popped" or "bad" capacitor and you would be able, with ease, to diagnose if you have any of these. Usually only one or two. Radioshack sells capacitors (couple anyway) for $1.59 each. MAKE SURE the replacement is of the SAME voltage or HIGHER, or you will be right back replacing those 2. Every capacitor has a negative pole marked with an (-) on the side of the capacitor(by one of the "legs", always puit the negative (-) "leg" of the new capacitor in the same hole in the printboard as where the previous negative (-) "leg" of the capacitor was ( a capacitor with the negative and positive "legs" put in backwards will result in the new piece "popping" as sson as you turn it on!!) make sure the "uf" rating (for example the most common popped capacitor is the 1000 uf) is the same as the one you are replacing. I needed 1000 uf, 105 c and 26v (volt) ratings for the 1 capacitor I needed to replace to fix my LG 19" lcd panel monitor I found by the trash that the light came on off, but it didn't come on. I replaced that capacitor with ; 1000uf, 85 c and 36 v (volts0...It works fine eventhough the volts and the temperature rating (36v and 85c) was not the same as the (26v(volt) and 105c ) capacitor I removed !! Further, I've replaced capacitors that had the celcius rating of 105 with the only ones Radioshack had, namely 85 c(celsius) they have been working great, but I'm not sure about any effect, nor have I heard or read (yet?) about that making an urgent difference. Many threads that I've read people have done the same, so we should be ok (my stuff has been running good for a while longer then most brand new ones!.............(all these ratings ; 'uf ' and 'c' etc are on the side of the capacitor you are replacing and on the side of the ones you are replacing them with)...For all this all you need is the cheapest solder gun u can find (I bought one for $7.99 at Radioshack), a camera (to take pictures as you go to remember how to reassemble the unit) and, once you have your materials, 20 minutes to replace 2 or 3 capacitors and you are good to go...Most monitors and tvs (lcd/plasma) I've seen you have to lay flat on the ground/bed/blanket etc, to work on (screen side down). Usually there are 2 or 3 screws (or a few more) to remove, then you will have to carefully (its comes off easily most times)insert a flat screwdriver inbetween the casing and gently pry it up as you go around the whole frame. Sometimes you have to remove the little washer arouind the cable input orso, just be gentle and you cant go wrong. Once insidet here will be a box with wires running to the sides etc...unplug, gently, these wires and open the box. Inside you will find 2 or 3 circuitboards, check them all for "popped" capacitors, replace, reassemble and plug it in....Have fun becoming an overnight tv mechanic lol!

If this helped you (or not) please rate, thank you!

Hi,
I think there is some thing else defective in power supply board that is why capacitors replacement did not fix the problem.
Question shows its Samsung LN-S4051D lcd tv, if this model number is correct then its power supply board is available in Shop Jimmy for $72
Get new power board and replace it in TV.
If tv model number is different, let me know.
Thanks.

you can use buttons on side of tv to turn on

are batteries in right way
to test remote if you have camera on phone switch it on and point remote into camera and you should see flash of light when press any button if not you can get new remote form charles hyde and son ( CHS ) web site you will need model number on remote

There are two places to look for the problems, the backlight inverter board and the power supply. Look at the power supply first since it is easier to get to, look for burnt parts, bad capacitors, etc. Look for 5vdc, 12vdc, and 24dvc.
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: http://www.shopjimmy.com/catalogsearch/result/?q=Samsung+LN-S4051D+
Please post back what you find.

it is a common fault take back off and look on main power board for capacitors that have blown ( raised tops )they look like little batteries with white line on them replace with same value e.g(2000mf 25v) and what side line is on ( TAKE PICTURE )

In order to fix this problem the back cover has to be removed and some voltage test on the power supply and interface board need to be tested. You need a multimeter to make these basic tests, you can get one from radio shack. With this meter we can see which circuit board is at fault here. Once we locate which board is causing this problem you can either have it fixed from a repair shop or replace it with a new one.

SAFETY FIRST:
its best to get someone who technically proficient to do these test.

If you decide to do these tests yourself keep in mind the high AC voltages you will be exposed too. These AC voltages are dangerous and very harmful if failure to respect certain testing disciplines. Remember this is a TV.

Let me know if you want follow up on this.......

You are having issues with one of two of the power supplies,
1) The main power supply
2) The Lamp Ballast 'back florescent lighting' power supply.
A good TV repair shop should be able to repair this for you. Possibly between $200 to 300 repair.
Blessings,
A/V Media Guy

Could be power board. Check for swollen capacitors . If ok next check buffer boards for burnt ic. With set unplugged unplug power board from sustain boards. Plug back in and see if it turns on. Unplug again and disconnect buffer boards from sus board plug power supply back into sus to see if it powers on. If it does then buffer boards bad. Isolate upper and lower to Determine which one is bad. Just always remember to disconnect power board from sus boards when disconnecting panel to buffers. Power supply stores a lot of energy and will burn these connectors while reconnecting them.

the power supply board needs to be replaced. common problem.

If your TV is staying on and you hear audio after the picture goes dark, then you have a problem with a CCFL or the inverter circuitry that drives them.

Most likely an inverter problem.

Like a bad xformer (usually fogged up plastic wrapper)

Or a bad cap (bulged, swollen, cracked)

Or maybe a shorted IC or transistor (test for short circuit between the different pins of the device)

The main board or power supply has problem. To make sure which one causes malfunction the TV must be opened and check by technician.

You have to take the TV rear panel out and just install a new one, you can get it here.
http://www.shopjimmy.com/catalogsearch/result/?q=Samsung+LN-S4051D+
Are you sure the speakers are bad, not the amplfiers?

power supply board needs to be replaced. common problem.

There two sections in power supply, one is the 5vdc standby which is always on, the second section are the 24vdc for backlight inverter board, 12v, 5v , this section get the command ON from the controller board. So you have to have 5vdc standby power supply working. Look at the connector for something like 5v-stby labelling, that the first palce to start.

BN07-00264A lcd-panel
$523.00 PART PRICE
$350.00 CORE CHARGE
Total price 873.00 + tax +shipping
A cracked panel may not be returnable as a core .

the inverter comes out by levering out ( NOT LIFTING ) of light holders start at top ( THIN SCREW DRIVER ) will do TAKE YOUR TIME

Hi,

Check your PIP or POP (picture in picture or picture on picture settings)

usually by cycling the button PIP or POP will make it go away

good luck,

mrwindex