You’re here because your Samsung LCD TV is not working or it takes forever for it to start up, right? And you want to know how to fix this LCD TV, right? Well, 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 more about Symptoms of an LCD Power Supply Problem
Bad Capacitors
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:
- The capacitance measured in uF(micro farads) (ex. 2200uF),
- Voltage (ex. 10v),
- Temperature (ex. 105°C)
Support this page by buying your items here: (THANKS!!!)
1000uf 16v Capacitor 105c High Temp, Radial Leads
2200uf 16v Capacitor 105c High Temp, Radial Leads
Weller SP40L Marksman 40 Watt Soldering Iron
Heavy Duty Soldering Iron Stand
Desoldering Wick
Solder Wire 63/37 with a No Clean Flux Core .032, Pocket Pack (0.6 oz)
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:
My Official Samsung LCD TV Problem List
Did your Samsung LCD TV just completely went kaboom and does not work anymore but still wants a Samsung TV?
Buy this one! Its the best priced Samsung for your money: Samsung UN40C6300 40-Inch 1080p LED TV – Graphite
(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.
Your LCD monitor having problems too? Well, I bet it’s having a capacitor problem too just like this ACER X221W
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!
If this tutorial has help you and save you lots of money. Click on the donation button to buy me a $3 coffee. Thanks!
See what Samsung has to say about this known problem with their LCD and Plasma TV sets.
531 Responses to Samsung LCD TV power up problem
Beth
Replied on: September 28, 2009, 12:11 pm
Same problem w/ LN32A330.
2 months trying to get Samsung svc to fix! Found this and similar posts so will do myself… (just took back of tv off and found a couple of these blown capacitors!!)
Thank you!!
freshsqueezedsaturns
Replied on: September 29, 2009, 7:50 am
Offer for 50 U.S. Samsung owners with the crappy capacitor problem.
http://forums.cnet.com/5208-13973_102-0.html?threadID=357687&tag=forum-w;forums06
Otherwise here is what you can expect Samsung to say with slight variation,
“Thank you for your e-mail. However, we regret to inform you that we are unable to accommodate your request for compensation at this time due to the expiry of your limited warranty. We have confirmed with our Quality Control department that the model you own does not exhibit any widespread issues that may cause concerns. Furthermore, your specific unit does not have any service history that we may review for further consideration of your request.
If you have any further inquiries regarding warranty terms and/or conditions please contact our customer care line at 1 800 SAMSUNG.
Thank you for your time and we appreciate your cooperation
Ahmed Yahiouche
Office of the President
Samsung Electronics Canada Inc.”
Chriss
Replied on: September 29, 2009, 8:07 am
“We’ve been authorized to accept up to 50 people** who step forward with the problem to have it inspected and repaired for free. Regardless of warranty status, age of the unit, or past denial.”
It all comes down on good customer service. But from that statement above I don’t see it at all.
Robin
Replied on: October 11, 2009, 5:52 pm
Like the rest of you I am having the same problem with a LNT4671F 46″ Samsung. We had the problem about two weeks after we got it home and the company that we bought it from repaired it under warranty, it took almost two weeks. The TV is now about a year and a half old and having the same problem. I had the back off today and saw the two bad capacitors but I am unable to find any locally to replace them with. I will check out MCM Electronics like suggested above, thank you. I just wanted to add the model number to your list.
Bruce
Replied on: October 12, 2009, 9:49 am
Chriss -
Ref.:(If you’re a Samsung LCD owner and have a different model number with the same problem, please let me know) – -
I have a LN40A630M1F that just shut off and will not power up. It is one year and one month since purchase.
Chriss
Replied on: October 12, 2009, 10:22 am
Bruce, you have tried fixing your set? Have you check if you have bad capacitors on your LCD set? I am not a technician but if one capacitor is completely out(not bulged but blown capacitor) I am sure your LCD set would not power up at all. Check it out and let us know.
bruce
Replied on: October 12, 2009, 1:13 pm
Chriss -
This just happened last evening, have not cracked the case yet to see. I was researching options when I ran across this forum.
Steve
Replied on: October 15, 2009, 9:12 am
I have had this problem a couple of times, the first was under warranty and they replaced the power board with the exact same one, problem solved for 1 year. The second time, still under warranty, I requested the technician to replace the caps, he agreed it is the best long term fix, the are 10v and he replaced the smaller ones with 16v and the bigger ones with 25v. The TV is working perfectly and I hope not to be making my annual repair call now that the design flaw have been correctly dealt with.
Chriss
Replied on: October 15, 2009, 9:56 am
When i replace my caps I installed same voltage on it. I wonder how long it would work before that cap goes bad.
Todd
Replied on: October 22, 2009, 8:59 am
I have a Samsung LN52A550P that will no longer power on and just makes the clicking sound. Mine however just stopped working one day, there was no progression of it taking longer and longer to turn on. I took off the back and had a look at the capacitors but none of them seem to be bulging to me. I was wondering if anyone knew if this was a different problem or if I should just go ahead and try to replace the capacitors anyways and see if it helps. Thanks.