Last March of 2008 I was so excited to get my new Samsung LN-T4065F 40 inch LCD TV. The looks of the LCD set is awesome, watching it on High Def is just amazing. But it only took 1 year and 3 months for it to go bad(Yeah after my warranty expired. What a bummer!). The initial problem was when you turn on the device it takes awhile for it to come on. At first, I thought it was my Direct TV DVR that was causing the power up delay because every time when it come on the resolution of my TV goes from 1080i to 480i. But after few weeks the LCD TV gets worst, clicking starts to come in and TV turns on with this weird colored background and I just got tired of it and started searching about it over the internet. After that time, I am for sure of the problem and there’s an abundant of information about it over the internet.
Read about: Symptoms of an LCD Power Supply Problem
Swollen, Bulged, Bad Capacitor
The main cause of this power up problem are bad capacitors on your power supply. The image to your left shows that the middle capacitor is bulged or swollen and that’s how you can identify if the capacitor is bad. See more bad capacitor images Most of the post I have read online haven’t shown a capacitor that has leaked, but obviously that would be another indicator for a bad capacitor.
Now, if your LCD set is still under warranty I would suggest to use it and let the professionals handle the problem for you. But for the rest of the Samsung LCD TV owners that their warranty had expired and want to save some money, this would be the best route. Mind me, when I fixed my power supply I didn’t have any previous experience on desoldering and soldering capacitors on a power supply board. It was a good experience after all is said and done.
Here’s what you need for this DIY project: Screw driver, Soldering iron(40watts+), Desoldering braid, Soldering wire, and capacitors.
Now lets talk about the specs, capacitors hold 3 important value:
1. The capacitance measured in uF(micro farads) (ex. 2200uF), 2. Voltage (ex. 10v), 3. Temperature (ex. 105°C)
Important Notes:
Samsung’s power supply capacitors has 10v installed on the board and it is attached to a 12v bus which is causing to bulged. (I’m not a Electrical Engineer but I do know if you put too much on something, its going to get bigger or burst! ^_^ And that’s why our LCD sets end up with bulged or leaked capacitors)
Look at the bad capacitor and get the right information from it, remember uF, voltage and temperature. Mine, I only change 2 capacitors. It needed two 2200 uF, when I first saw my power supply it was really easy to spot the bad caps. Some Samsung LCD owners did went ahead replace all the capacitors on the power supply to make sure. Now if you’re like me, an inexperience solder, I would not recommend changing all the capacitors because to me it was time consuming for a noob(newbie) like me ^_^.
Few things to take note, always make sure you have the right polarity. Negative part is where the colored stripe on the capacitor. If your looking at the image above, it would be the copper colored stripe. And if you are looking at the two connector wire of the capacitor, the negative wire is the short one. On placing it on the board make sure negative to negative and positive to positive. By this time you will be ready for soldering.
How to Solder and Desolder (Youtube video) is pretty simple and it just need guts to do it 
The total cost for this project is $40 (I had to buy a new soldering iron and desoldering braid) You can buy capacitors from radioshack but always remember uF, voltage and temperature(they are price from .40 cents to $5 each).
Here are the models that are known with this problem:
- Samsung LN-T##61F
- Samsung LN-T##65F
- Samsung LN-T##66F
- Samsung LN-T##71F
- Samsung LN-52A550P
- Samsung BN68-01024D
- Samsung LN40A630M1F (would not power up at all)
- Samsung LE40R88BD
- Samsung LN40A500
- Samsung LA40N81BD
- Samsung LN 26A450
- Samsung LA40R71BD
- Samsung LN-T4642H
- Samsung LN52A750R1F
(If you’re a Samsung LCD owner and have a different model number with the same problem, please let me know)
I just fixed my LCD set last night and all is working fine and turns on normally. Power up delay and the rainbow background is gone . I will update if there’s any other effect after installing that 2 capacitors. This post is based from my own experience fixing my own samsung LCD set. I will not take any responsibility if something wrong happens to YOUR LCD set after reading and taking this advise from non-professional DIY fixer. USE THIS GUIDE WITH CAUTION!
See what Samsung has to say about this known problem with their LCD and Plasma TV sets.
Sources:
Fixing Samsung clicking sound on power up
Your Audio Visual Science Forum – Samsung LN-Txx61f/65f/66f
Same problem in model LE40S71, 4pcs 1000uF and two of them strted leaking. Original was 10V. Replaced with 16V.
TV was bought march 2007.
Thanks for the advice
Hei er det noen som kan gi noen typs om hvor je kan kjøpe konesator ?
Chriss, I just wanted to thank you for taking the time to research this issue and post such an informative, detailed solution. I performed the work on my parents TV last weekend and it is good as new. I ordered the caps off Amazon (ended up with 16V models) end they arrived in 2 days.
Thanks again!!
I have the Samsung LN-T4066F model and had the same problem as everyone else. I visited with the owner of a local tv repair shop who has had experience fixing this problem. He recommended using a higher volt — 50v or 35v. I went with the 35v (1000uf – 35v – 105 degrees). The de-soldering was the hardest part for me. Had to replace 4 capacitors. Took about an hour for the entire job and cost for 6 capacitors was $25.00. My tv fired right up and works great. Thanks for all posts.
Thanks for the article. I’m having exactly the same problem, but with a Samsung 226BW PC Monitor.
I’ll be giving this a go, much appreciated.
I am looking at purchasing a Sony 32 inch LCD Monitor KLV-32U100M that does not power on. Do you know if this issue occurs in newer models like these? Because if it does, I’m going to try and save some money by buying this unit and fixing it.
i have a samsung LE40S86BDX two and a half yeas old and we have the same power up problems and have been told that it can cost up to €400.00 and more what a rip-off so glad i found you guys / girls ,have taken the back of the TV and as you have described 4 x bulging capasitors 3 leaking
black stuff .have orderd the new capacitors at a cost of €6.00 includind P+P many thanks .
Great guys followed your advise to the letter replaced 4x 1000uf 10v with 25v and bingo samsung LE40S86BDX sprung to life wifes asleep in front of it and harmony has returnsd to our house …………..
and it only took about 20 mins from start to finnish .
Samsung Model# ln32A330J1D manufactured in july 2008 had a bad capacitor on the powersupply. Thanks for the information.
I have a samsung plasma that is having the same problem O was about to try the soldering trick when I discovered that non of the capacitors are bulging. WHat else could this be?
THe model is PN50A550. Purchased in September of 2008
Had same issue with LNT4053. Replaced 4 bulging capacitors. 2 of them were leaking.
Thanks for the advice.
My LNT5271f is having the clicking problem. Right now it takes my TV 10 minutes to turn on. Once on, the TV works fine with no picture issues. This issue started to happen about 2 months after the warranty expired. Someone else I know who has the exact same TV just had this problem start to happen. His tv is just under 2 years old. I’m never buying another Samsung product.
I just ordered two 25v 1000uF 105c for my LN750 and still waiting for them. I just ordred the capacitors with the same exact specs. Should I have gotten a higher voltage? Or should this work, atleast for awile anyway. Afterall it took 7 months to blow in the first place. Also bought the 3.15 and 6.3 A fuses just in case.
25v should be enough. Most of the caps having problems are with 10v.
Fired right up!!! Wish I knew this info was online two weeks ago when I started testing for the problem. Took me that long to find the problem by myself- wasn’t till I went to order the caps that I found all this info about everyone else having the same prob. Samsung should be ashamed of themselves! But hey, It’s on now, can’t complain with the eventual result. I did get it fixed once under warranty 7 months ago. (Replaced the whole board) The repair lasted 7 months and they refused to fix it for free again when it broke down this time. Glad I got it fixed again no doubt (for 78 cents!) but now I feel like it’s just a matter of time before I wake up and it doesn’t turn on again. Wish I just knew what was causing the caps to blow.
PS- When I was removing the bad caps, I noticed that one of the stems was soldered to another part of the circuit, just ever so slightly, no doubt by accident. So I wonder if that had any effect.
Yo alex, if your friends tv is still under warranty, just switch the back of your tv with em. Know a few who have done it with the LN650.
The LNT4665FX/XAA also has the problem. Samsungs tech support is by far the worst that I have ever seen in the electronics industry.
I wrote a letter to there PR of LCD TV. They are Finally taking responsibility for the Capacitor, they set a date for the repair guy come
and fix it.
my LNT5271F is not in warranty