Samsung 40" LE40R74BD


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Samsung 40" LE40R74BD

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ragejon
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Dec 21, 2008, 3:56 PM

Post #1 of 14 (4414 views)
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Samsung 40" LE40R74BD	Can't Post

Hi guys this is my first post here.

I need a little help in regards to my above HD tv. for a short time now around 2 weeks my tv will not start up and keeps getting clicking noises up until yesterday the tv would come on automaticly after around 3 hours the picture the sound and every other way it works fine i could even turn it off and turn it straight back on ... but when its left overnight it like trying to get my girlfriend out of bed it doesnt happen.

Today i took the back off the tv and gave it a blow to get any dust off and so on ... also tried to establish where the clicking noise is coming from. Im not 100% but it seems to be coming from the main board around the copper coils ... aka ( thingermejigs ) to me.

Could any body help me on this please as the tv is only 15 months old.

Thank you very much

Jon

zip
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Dec 23, 2008, 4:16 AM

Post #2 of 14 (4393 views)
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Re: [ragejon] Samsung 40" LE40R74BD [In reply to]	Can't Post

change all the bulging capacitors on the SMPS supply.

ragejon
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Dec 23, 2008, 12:26 PM

Post #3 of 14 (4386 views)
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Re: [zip] Samsung 40" LE40R74BD [In reply to]	Can't Post

ok thank you and how much will these cost approximatly in the uk ... and do u know of any where i can get them from .

Thanks again Jon

techchris
Veteran

Dec 23, 2008, 2:33 PM

Post #4 of 14 (4379 views)
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Re: [ragejon] Samsung 40" LE40R74BD [In reply to]	Can't Post

try Maplins in the UK. expect to pay from 12p to about Ł1 each capacitor

ragejon
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Dec 23, 2008, 5:30 PM

Post #5 of 14 (4377 views)
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Re: [techchris] Samsung 40" LE40R74BD [In reply to]	Can't Post

Thank you for your speedy replies guys is there any way i can get some kind of guide on the net regarding changing these ... as to be perfectly honest i havent a clue what a capacitor and what it does and how to change these .. so i think if i was to look at some sort of samsung mainboard manual of some kind then i could decide if i was able to do this myself.

Thank you very much most appreciated.

Jon

ragejon
New User

Jan 1, 2009, 4:23 PM

Post #6 of 14 (4333 views)
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Re: [ragejon] Samsung 40" LE40R74BD [In reply to]	Can't Post

Anyone .. Hlep Pleaseeee

techchris
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Jan 2, 2009, 7:09 PM

Post #7 of 14 (4314 views)
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Re: [ragejon] Samsung 40" LE40R74BD [In reply to]	Can't Post

the power supply is on the board where the mains cable connects inside tv. the caps in question are usually blue or black with a stripe down one side. they are upright so you can see if the top end is bulging out. you need to be able to solder/unsolder to change them and this will involve taking the panel out of the tv or at least turning upside down to access the solder side of the board.

ragejon
New User

Jan 2, 2009, 8:35 PM

Post #8 of 14 (4311 views)
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Re: [techchris] Samsung 40" LE40R74BD [In reply to]	Can't Post

Thank you very much

ragejon
New User

Jan 3, 2009, 3:46 PM

Post #9 of 14 (4300 views)
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Re: [ragejon] Samsung 40" LE40R74BD [In reply to]	Can't Post

hi guys i have a recent update .. i think i have found the capacitors wich you have established the problem .. these capacitors are black with a silver line .. there are around 3-4 wich are actualy bulging the 1 actualy has some kind of black dried liquid coming from it ... im guessing the ones wich still have there silver cross on the top are fine.

Is there any way i could post a picture on here so i know i am looking at the correct capacitors ?

Thanks Jon

techchris
Veteran

Jan 3, 2009, 6:29 PM

Post #10 of 14 (4289 views)
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Re: [ragejon] Samsung 40" LE40R74BD [In reply to]	Can't Post

you can e-mail me a picture of the board

ragejon
New User

Feb 28, 2009, 5:25 PM

Post #11 of 14 (4169 views)
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Re: [techchris] Samsung 40" LE40R74BD [In reply to]	Can't Post

Hi guys this is just a thank you in regards to the above.I have recently fixed the tv myself and was chuffed that it worked with no problem at all.

Yes the problem was the capacitors and only took 40 minutes to do the 4 of them and only cost Ł3 all in all.

I was told silly prices by repairmen in the Ł100's.

Is there a link you can provide for donations to this forum?

Thanks again Jon

techchris
Veteran

Feb 28, 2009, 7:14 PM

Post #12 of 14 (4164 views)
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Re: [ragejon] Samsung 40" LE40R74BD [In reply to]	Can't Post

happy to help and get a result. pour a large one and drink it for me!

TVS TELEVISIONS
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Mar 4, 2009, 1:52 PM

Post #13 of 14 (4146 views)
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Re: [ragejon] Samsung 40" LE40R74BD [In reply to]	Can't Post

Check out the samsung forum at http://forums.cnet.com/...mp;tag=rb_mtx;f06-fd. They have several Samsung techs that monitor the forum and provide excellant and quick replies. Smile

D&B Enterprises
Providing the best Samsung Televisions
at TVS TELEVISIONS ONLINE

ramshackle
New User

Jan 31, 2010, 11:59 PM

Post #14 of 14 (3423 views)
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Re: [ragejon] Samsung 40" LE40R74BD [In reply to]	Can't Post

Hi all,
First time poster found this forum after doing some searching... seems a helful forum so here goes.... hope you can help.
I have the same issue with my TV and the same model. LE40R74B.
It started taking about 30 secs to start with a few ticks in between and now it is up to about 10 minutes to start....
I am not sure I'm clever enough to change capacitors ect if I'm able to find them at Maplin. I've never soldiered anything before etc so not sure If I could do more damage etc.
Does anybody know where I can get the whole Power supply unit as that sounds like it could be easier to replace? A link etc would be appreciated.

Thanks

Greg7

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