Samsung LN-T4061F problems turning on, picture random lines

If enough of us post maybe they'll look into it.

I took the back off mine. In the middle of the back is what appears to be a power supply board. On the upper left of that board (as viewed from the back) I saw three radial lead electrolytic capacitors that were puffed out on the end. This is a typeical sign that the dialectric has broken down. I replaced the capacitors and my TV acts like it did when it was new. The capacitors I replaced were all 100 uF 10 volt capacitors.

On the upper RIGHT of the board. I wish this forum allowed post edits.

wow, i am having the exact same problem. I did an online chat today and she couldn't find a solution. I asked her if there was anyone else with this problem and she said it had not come up! interesting. I will attempt to come up with someone who will to look at the back of the tv to see if it is the same problem. shouldn't this be under something from samsung to warranty this common problem?
any advise let me know.

I'm having the same problem. No luck so far finding a solution although the concensus seems to be that it is a power supply issue with the TV.

We went to Sears in August 2007 and bought model # LNT-4061FX/XAA and LNT-5265FX/XAA Samsung, our 52 has been doing the exact same thing, not turning on-keeps going through the motions, but no picture and it seems to be taking a lot longer after a month. We turn it on now and leave it because we know its going to take at least 10 mins to finally see a picture. The 40 just started doing the same thing-still in the early stages doesn't take as long to see the picture. We were recommending to our friends and family the Samsung tv..and we are in the market for another tv now..but after this with the two tv's we seriously are thinking of another brand! Any suggestions?

I called Samsung about the problem with taking too long to turn on and also the colored lines when it does come on. The tech I spoke with told me to unplug the TV and then hold the on/off button in for at least 15 seconds. I did this but it didn't change anything. I guess it's off to the repair shop. I won't be buying another Samsung. Sony or JVC will be my next choice. I've always had exception luck with any electronic equipment from either of them.

Hi, this fix was posted on another thread:

http://forums.cnet.com/5208-13973_102-0.html?threadID=316414

If you are brave enuf to take your TV apart and replace those capacitors you will save yourself $500.

I'm going to try it next weekend when I pick-up the capacitors from Radio Shack.

Radio Shack did not have the capacitors. I bought mine online from Big Daddy Enterprises for $.25/ea. 2-7 days shipping time. I could not find them from any local electronic suppliers in the Virginia Beach area.

The correct capacitors to replace are 1000UF-10V Radial Electrolytic Capacitors. Radio Shack does not carry them (don't use the 1000UF-35V that Radio Shack does carry as this could cause other component problems). I found them online at Tayda Electronics for $.22 each. I bought 12 as it is a 7-21 day shipment time. An electronics tech confirmed the capacitors are burned out by the outward bulging in the top cap (I brought the board with me to Radio Shack). There are 4 in all that require replacement. Good luck! Al Q.

I'll give these a try. Good move by bringing in the board. That pretty much confirms things for me.

PS Now it takes 1.5 minutes for my TV to turn on, about a minute longer than a couple of days ago. May not seem like much but it is an eternity for my two kids!

I used to like Samsung but this will be the last Samsung product for me. They should acknowledge that this is recall worthy and fix them for free.

I received my capacitors and it took about 1/2 hour to install. You definitely need a desoldering vacuum pump to remove the bad capacitors (bought one at Radio Shack for about $7). Be extremely careful when removing the bad capacitors that you don't tear the circuit board contact copper material from the base of the capacitor. It's easy to tear off. TV works like new.

Great work. My capcitors are on the way. Can't wait to get this done and stick it to Samsung. It's taking about 5 minutes for my TV to turn on now. Sometimes it turns on right away, there is sound but no picture. Funny how my 10 year old cheapy Sanyo is still working fine.

Please tell me your reasoning for not using the 35V version.

In fact, that's what's the design flaw here: they had insufficient working voltages. Designers of all but the lowest caliber know to use 3x the nominal V for margin.

Only issue is 35V caps can be a little larger than 10V capacitors so you've got to confirm they'll fit. I'm doing mine now w/35V.

jwflins

That's news to me. Even in military designs we would halve the voltages. Which Samsung did but it didn't help because of the Capacitor Plague.

More at link to follow. I've seen such claims before and we used both a Volt meter and an oscilloscope on the lines to see if there was a design flaw or wrong part picked. So far it look like the plague that took out millions of Dell PCs spread to TVs and more.
Bob

-> http://en.wikipedia.org/wiki/Capacitor_plague

I have read somewhere not to use the 35 V capacitor. I have the same problem with my set and want to make sure that upping the voltage on the capacitor won't cause other problems

Oh, also, this really makes Samsung rise up in my confidence to buy more products in the future. While this problem has been going on for about 6months to a year, they figured out the issue and decided to do the right thing. I own a Samsung DVD player too and would want to buy a blu ray or HD internet movie player at some point, I imagine it will be Samsung after this great service.

CNET forums are kinda odd, subject required for each reply, no duplicate subject lines....jeez, like we are in the 90s.

Good for you.
I called and they denied there was a problem (they new about) but also said it didn't matter since the set was out of warranty.
They called back to ask me if I was happy with their customer support. Can you believe that. She asked me on a 1-5 scale, 1 being I loved the help ,and you guess what a 5 was. I told her 10. She thanked me for the input.
Anyway, I got 4-35V capacitors from Radio Shack, had a friend do the switch out and the whole thing cost me $45.00 and 30 minutes of down time. Set works as it should, so far.
PS: was your set still under warranty?

That's the same line they gave me. I won't be buying anymore Samsung products. Fixed it myself.

Tech installed 4 16v capacitors, there was one that had yet to start leaking, but he still fixed that one. Took him exactly 12 min from start to finish...amazingly easy.

Samsung is the largest electronic manufacture in the world. I doubt they would deny reasonable claims. Either people here have trouble talking to and dealing with customer service, or they are lying about their "denied" experiences.

The TV model in this thread is the model of mine. I bought it about 3.5 years ago, so very far out of warranty. (one year)

And just so I understand your point, I guess all these folks that took the chance to fix their own TV's without the services of a paid "Technician" like you used, are just too stupid to know how to relay their issue to Samsung? Get a life A life and find another forum to use for your insults. Idiot!

How did you get the service. I called this morning about the problem and was told my tv did not have the capacitor and I could not have the problem. After reading all of the comments and talking to the lady at the service contact number, I am sure nobody has been lying. Please tell me how you were able to get them to service your tv.

Yes, my set was out of Warranty. Fixed.

I'm having the exact same problem everyone here is having, was surprised how many different people in different forums are having the same issue. Emailed Samsung with a description, root cause, etc we'll see what they come back with.

Lucky for me, I run a circuit board manufacturing facility with a room full of equipment and a very talented lady named Mooney to facilitate the repair!