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. 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
(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
Bought the Samsung LN-T4042H LCD from Best Buy @ September, 2008. It started the clicking and slow-to-power-up cycling a few weeks ago. I am eager to try replacing the capacitors myself after reading all the posts! I thought that Samsung made reliable electronics. My mom bought a Samsung LCD on my recommendation and I’m wondering when her tv will start having problems.
guys i had the same problem and here in hondras where i live, i couldnt find 220uf 10v so i got on the phone with an engineer and he told me to use the 25v capacitor i did it myself and the problem was solved right i spend i average 15 dollars thanx chris for this great post
to whoever wrote this article, you just saved me from buying a whole new HDTV. bought the proper capacitors, desoldered the bad ones, soldered on the ones, and it works! thanks so much.
@Anon, Thanks! When this problem happened to my LCD set I figured out if I post this on my blog it would help. I just didn’t realized that this problem was not just limited to the unlucky few.
I hope that the next time we buy an LCD set, we won’t encounter this problem any more!
You said:
“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)”
SO, should I get a capacitor with more voltage (e.g., 12v if its only 10v??
@pabs
That’s right Pabs, get a 12v instead. On my set, I actually installed 10v capacitors so there’s a probability that my caps would give in later on, just like the old once. But it’s also possible that the OEM caps Samsung installed had bad quality. We will see if my caps will give in after a year. At least this time I don’t have to research on how to fix it
Hi,
I bought my Samsung 40″ LNS4095DX in February of 2007. It has been clicking for awhile but would usually come on after 10-20 seconds or so. Yesterday the whole screen developed vertical lines similar to what your photo shows, although I can still see the picture through the lines somewhat. Do you think swapping the capacitors might solve the problem? Understanding the inherent risks, disclaimer, legal stuff, etc…
I am extremely disappointed that this TV is now unwatchable and I am not in a situation right now where I can buy a new one or spend hundreds of dollars getting it fixed.
Sounds like a similar problem to the one I have on my Samsung LE40M87BDX. Any recommendations as to where I could get the capacitors from? (P.S. I live in Surrey about a mile from Samsung’s UK HQ, if this doesn’t work I’ll be camping on their doorstep!!!).
@BruceB – Open the back of your LCD set, if the capacitors are bad, then, yes changing the caps should fix the problem. If Samsung is not extending your warranty(which happened to some) then your best option would be to fix the know capacitor problem.
@Jay – try http://www.parts-express.com/ I haven’t bought anything from them but one of our readers mentioned this website. Just try it and let us know. Good luck!
Here’s a little update. I took apart the TV and it was the usual suspects, CM852 and CM853 were both blown. Ordered these caps:
http://cgi.ebay.ca/5-pcs-Electrolytic-Capacitors-2200uF-16V-105C_W0QQitemZ290384903637QQcmdZViewItemQQptZLH_DefaultDomain_210?hash=item439c49fdd5
I should be receiving them any day now then I’ll post another update after I put them in. I’ve been taking pics along the way just so I don’t forget anything when I put it back together. I might upload them if anyone needs help with the 4669F.
I have a LN46A650 had 2 bad caps. They were 1000uF 25V and showed bulging and leakage replaced them and the TV works fine now thanks for the info.
Just a note on electrolytic capacitors… even if it looks fine a capacitor can still be bad. It’s hard to definitively test if a cap is good so replace when in doubt. Give yourself some margin in the voltage rating, no harm using a higher voltage as long as it’s the same type of capacitor and it physically fits where it needs to go (higher voltage tend to be bigger). So if a 10 V cap gave out on a 12 V circuit, go 16 or 25 V.
For real fun stories of replacing capacitors do a search for antique radio rebuilder forums…
had my sumsung 40 in. for two years and now will not even come on for about an hour. Just gives me a clicking sound when I try to power it up. Does anyone know how to fix the problem?
@Fray – The post is actually about on how to fix your Samsung TV with power up problems. Just read the post above and follow the instructions.
Joined class action lawsuit this morning to recover cost of having capacitors replaced on my Sammy LCD TV:
http://www.lieffcabraser.com/contact/contact-samsung-lcd.htm
We have a LNT4061F 40″ Samsung TV bought in Dec. 2007 and used only 14 months before we started having problems with it powering up. I did all the research on this problem and found this site most helpful. We chose to replace the complete “Power Supply Board” from samsungparts dot com for only $117.00. The power supply board was updated with bigger capacitors than the old one and only took 15 minutes to install after removing the defective on. If your not sure about soldering new capacitors onto the old board, I would suggest replacing it. After finding out that a repair place would charge around $600. we knew we could fix our TV ourselves, thanks to this site and everyones input.
@Chriss
We have another 40″ Samsung LCD TV model number to add to your list LN40A550. My parents have this TV and after tell them about our problem with our 40″ Samsung #LNT4061F and replacing the Power Supply Board(IP Board/Power PCB) because of the powering up problem, they said, “their TV was starting to do the same thing”. They bought this TV in July 2008 and it’s looking like they will need to replace the capacitors soon.
I will include the website for ordering the power supply board and the phone number – http://www.samsungparts.com or call 1-800-627-4368.
Sandy D
Looks like a few people are having this problem and an excellent instruction guide to fix – many thanks. My LCD is also not powering on any more with the on button at the front – thanks kids. Anyone else had this problem?
Hi, I ahve an LE32R74BD 32″ Samsung which failed on me just over 12 months ago, it was two years old at the time. I kept hold of the TV and thankfully have found the forums about the bad capacitor issue on some Samsung TVs. The failure on my set was simply that t didnt turn on and the red light was flashing on the front.
I have read numerous artcles and seen you tube vids about replacing capacitors and am confident about doing it as a novice. The problem I have is that none of the capacitors on my board are bulging or have leaked, e.g. there is no clear indication which ones, if any, have failed. One capacitors has a blue smudge across the top, probably off a wire that was close – could this be enough to make a capacitor fail?
Any ideas how else I can identify which capacitor, or other components have failed?
Thanks
Final Update: I successfully replaced the two bad caps in my LNT4669F. They were CM852 and CM853, both were 2200uf 10v 105C and I replaced them with 2200uf 16v 105C and it works good as new! I wouldn’t reccomend ordering the same caps that I linked above because it ended up that they were much bigger than the originals and the legs were too thick to fit through the board. After removing the solder I had to carefully widen the holes in the board which was a real pain but I’m happy it actually turns on now! Thanks for the info
^^Forgot to mention that both caps were bulged at the top and the bottom was actually pushed all the way out on one side of one of them and some electrolyte had leaked onto the board and made a mark.
Ive got a samsung le40m87bdx lcd and have the same problem, will be ordering some new capacitors and giving it a go.
Thank you for this site. My TV is a Samsung 466 model. 3 of my capacitors were puffed. My caps were 1000uf, 10v. 105c. I replaced with 1000uf, 16v. 105c.
I was a bit concerned at first because my power supply area, which is located on the left side of the TV looking at it from the rear, did not look like the picture. However, it was easy to tell the puffed caps. Mine were black and grey.
It literally was a 30 minute fix! No experience in de-soldering. Once I used the desoldering braid it was easy to wiggle the caps. I used a hobby knife to straighten the leads,and used a pair of large needle nose pliers, pulled em out, soldered in the new and it works PERFECT
Thanks..you probably save me 500 bucks and a week or 2 of no tv!!
LN 26A450 can be added to the list.
A couple months out of warranty.
Waiting for parts to attempt the fix
Samsung didn’t seem to care when I called all they kept saying was you are out of warranty there is nothing we can do.
How do you open the back panel to find the power supply? Where is it located?
Do you recommend using a higher voltages (my ln46a650 uses 25v and I was thinking about using 30v capacitors.
Thanks
You can add LA40R71BD to the list as well.
I have one three years old. Current symptoms: long start-up time and clicking sound.
Just followed your suggestion….WOW! $16 for 2 new 35V 1000uF 105 degree Capacitors, DeSoder Wrap, Soder Gun and Soder! Check out the YOUTUBE links for sodering tips…since i was a NEVER DONE b4! Done and watchin my lovely ln46a650 Samsung!
I searched quite sometime to find problema AND THEN solution! Just saved me time and know for sure…$$$$$$ Thanks Chriss!!!!!!