I like fixing things myself whenever possible. Fixing my Samsung TV was intimidating at first, but it was actually fairly easy.
How to Fix a Samsung TV That Won't Turn on or Clicks
LCD TVs have a known problem with capacitors going bad. If your Samsung LCD TV won't turn on or makes repeated clicking sounds, there is a very good chance that you can save hundreds of dollars doing this simple repair yourself.
I know, I know. You're thinking, "Tinker inside my LCD HDTV. Are you crazy?" No, I'm not crazy. This is a repair almost anyone can do.
Don't have a Samsung? Read anyway, this guide will help you with any brand of LCD—bad capacitors are very prevalent in modern electronics.
You will need the five items below for this repair:
- Soldering Iron & solder
- Phillips Screwdriver
- Wire Cutters
- Samsung Repair Kit
Note: You will identify which capacitors you need in step five.
Need a soldering iron? No problem. They are cheap and easy to use. I highly recommend the J&L 60 Watts Soldering Iron. It's about 20 bucks. If you're looking for the lowest price possible, this 60W soldering iron with stand is about $8 (shipped prime) and will work.
Get your replacement capacitors now for the quickest repair.
Got everything you need? Time to dig in!
These tools aren't required, but they can make the process easier.
- Magnetic, ratcheting, flexible screwdriver (to help remove all the casing screws)
- Electric Screwdriver (to help remove all the casing screws)
- Desoldering wick (absorbs melted solder)
- Solder sucker (remove melted solder)
- Flux Pen (flux on solder makes it flow and less "sticky")
- Multi-Meter (test for bad Caps, helpful if there are no visual clues)
Step One: Remove Stand
After unplugging everything on the TV, you will need to remove the stand. If your TV was wall mounted you will need to remove the TV from the wall, and remove the mounting bracket from the back of the TV.
Red arrows: Remove these four screws to remove stand from TV.
Blue arrows: Remove these four screws to remove a wall mount (not shown) from your TV.
The TV sits on top and inside the stand, so it wont just flop over when you remove the stand screws, but it's always safer to have a friend hold the TV upright as you remove the screws from the stand. Then each of you grab a side and carefully lay it flat on a carpeted surface.
Step Two: Remove All Screws That Attach the Back Casing of the TV
The below images document where to find these screws on the TV so that you don't miss any!
Step Three: Remove Wiring Harnesses From Circuit Board
Remove the seven different wiring harness located on the circuit board. A simple tug on the connector clip (not the wiring) should be sufficient to remove them.
Step Four: Remove Screws Holding Down Circuit Board
Remove the six screws shown on the picture above and remove the circuit board from the TV chassis. This board is a power supply board and not particularly sensitive, but it is always a good habit to handle these boards carefully and by the edges.
Identifying Bad Capacitors
Usually, but not always, capacitors will show visible signs of failure. There are two main types of visible failure.
When it fails, the chemical reaction inside the capacitor can produce hydrogen gas, so capacitors have vents cut into the tops of their aluminum cans. These are intended to break and release the gas that has built up inside the capacitor. So, a capacitor which has failed can show bulging at the top. Below is an example.
Another sign of a failed capacitor is leaking fluid (electrolyte). This can be an orange or brownish discharge from either the top or bottom of the capacitor. Usually, with leaking the capacitor will also be bulging. But a capacitor can bulge but not leak.
Again, we want to emphasize that capacitors do not always show visible signs of failure. But, if you see signs of this on your board, you can be confident that you're close to fixing your TV. If you don't see these signs of failure, but your TV had the tell-tail clicking sound, you still can be fairly certain the steps below will fix your TV.
Step Five: Identifying the Problem Capacitors
If you have a Samsung 550 Series LCD (and perhaps other models), and you came to this site because your TV won't start, and it makes a clicking sound, then the picture above shows the capacitors that should be replaced in the red box. If you have a different make or model you will need to visually inspect and replace any damaged capacitors.
Below are actual closeups of my TV's board. Notice how the blue capacitors in the foreground are bulging. These are the capacitors I will replace. All other capacitors look OK. If you can find replacements for all 4 of these capacitors, and any others that show visual signs of going bad, I recommend replacing them all while you're in here.
I couldn't find the specific replacements for the "black" capacitors (820 uf 25V) at my local electronic store, and since they looked OK, I just replaced the the bulging ones. But again, if you can find replacements, and since the capacitors are cheap, replace all 4 of these if possible (and any other ones showing signs of damage) while your working in here.
** Watch ** Removing and Replacing Capacitors
Step Six: Remove Capacitors
Capacitors have polarity. What this means is, like a battery, they have a positive (+) and a negative (-) side. Before removing any capacitor, note which side the white stripe of the capacitor is facing. You will need to put in the new capacitor in the same direction. You probably noted on my pictures that I actually made a note on the aluminum heat sink with a pen.
Now that you've identified the capacitors that look bad, turn the board over and carefully identify exactly which points on the board the wire leads from the these capacitors. Circle them with a "sharpie" type pen to keep track.
Grab your friend and have them help you on this next step. Balancing the circuit board on its side while using a hot soldering iron and pliers can be a bit tricky.
Plug in the soldering iron and give it 10 minutes to get hot.
With the circuit board on its edge, have your friend grab one of the capacitors with the pliers and apply a very gentle pulling pressure. Apply the tip of the soldering iron to one lead on the back side of the board and hold it there until you see the solder melt. Now switch to the other lead until it melts. Keep going back and forth on the leads. Each time the solder will melt faster. After going back and forth a couple times the capacitor will easily come out.
Repeat for each capacitor that you are replacing.
Let the iron do the work. If the capacitor does not easily pull out, do not force it.
Using Solder Wick
Step Seven: Get the Appropriate Repair Kit
Now that you've identified the bad capacitors, you need to go out and find replacements. The simplest way is to get a repair kit from Amazon.
If you want to trek out on your own, keep the information below handy when choosing replacement capacitors.
Capacitors are rated for their application and you must replace like for like. There are three ratings to identify:
- uF (Micro Farads)
uF (Micro Farads)
Ideally you should match the uF and the temperature rating exactly. But it is acceptable to use a capacitor rated higher uF if it is within 20% of the original.
Try to match the temperature rating, you can go higher, but not lower.
There is a bit of wiggle room on the voltage, but only if you're increasing it. Do not replace a capacitor with a lower voltage rating then the one removed.
Often, you can find replacement capacitors at your local electronic store. But it may be easier to buy replacements from Amazon.com.
For the Samsung LN46550A, you'll need:
- 1000uf 10v Capacitor 105c High Temp, Radial Leads, or
- 820uf 25v Capacitor 105c High Temp, Radial Leads.
For my repair I couldn't find a 1000 uF, 105 degrees and 10 Volts, so I replaced it with a capacitor that is 1000 uF, 105 degrees and 16 Volts. I've seen this repair successful with a capacitor up to 25 Volts, but I wouldn't go any higher than that.
Step Eight: Time to Install New Capacitors
Insert capacitor, making sure to place the negative side in the correct location. If there is hard solder in the hole, simply apply the soldering iron until solder melts and slip capacitor leads in.
Bend back the leads to hold the capacitor in place.
Carefully clip the leads so that only about 1/8" is protruding.
Place your soldering iron and solder on lead until the heat melts the solder. Once solder melts onto the lead, apply the iron on the lead and solder a few times to melt the solder cleanly on the lead. If you have solder flux, the solder will make a clean connection.
Capacitors installed. If there is any flux or solder residue, simply clean the area with a damp cloth.
Step 9: Reverse the Process
Put Your TV Back Together
- Attach the circuit board with the six screws.
- Reattach all seven wiring harnesses.
- Replace the back cover.
- Turn on TV and be happy that you save yourself a ton of money.
This fix works. It worked for me, and it worked for hundreds of people reading this article. Check out the comments below!
This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.
Did it work? Have any questions?
jordanjessica on September 02, 2020:
Incredible! Total cost of repair $5.97.
Drea on July 06, 2020:
Excellent video and yes it worked. Thank you!
Woman with a plan on July 03, 2020:
No capacitors look bad in anyway. Is there something else to do?
Happy Kiwi. on June 08, 2020:
Excellent and easy to follow tutorial.
I replaced 2x 25Volt 1000uF capacitors on my 46inch tv (LA46A650A1M)
I already have necessary tools for this repair. Total repair cost is NZD$3 only.
Repair was successful and brought back a 12yo TV back to life again.
Guy With A Working TV on September 18, 2019:
Followed you guide and I have a working TV again!
Terry on September 17, 2019:
The repair worked great-Got the kit from amazon- find the capacitor that was bubbled up changed it .Clicking has stopped and now comes back on like it was new.Thanks
Discoverinfo (author) on February 09, 2019:
Fantastic to hear about your success Amy!
Dino and Vicky on January 11, 2019:
Yayyyyyy! A HUGE success! I researched the symptoms and found your blog, and Dino did the work. $5.93 for four capacitors.
Thank you so much!
Discoverinfo (author) on January 09, 2019:
If Capacitors look good, just replace them. The hard work is getting to them, with the casing all removed I would replace them all since they are inexpensive.
Chris on December 24, 2018:
Hi i just recently got a samsund Tv model UN55D6900WF and its making a clicking noise along with the power light flashing red. Ive looked at the power board but i dont see any of the capcitors buldged or leaking at all
Mark on December 08, 2018:
excellent tutorial. I did this a few years back and it worked for roughly another 2 years.....happened again and I got a new tv. screw samsung.
Abinav on November 17, 2018:
Amazing stuff man, my Samsung LCD tv gave me the same problem and I tried fixing it using your steps and it worked. Thanks for your step by step guide. Fixed my tv in 20 bucks.
Edward on November 14, 2018:
My samsung tv screen doesnt come on however when i press the power on button on the controller, the tv makes the sound charm like its going to come on, is this a simple fix?
dannymac84 on November 13, 2018:
Just brought a 10 year old TV back to life, Thanx!
allygh21 on October 27, 2018:
OMG OMG it worked!! Thank you SO much. I'm a single mum and this happened to my Samsung and I was like, I DO NOT want to pay $2K for a new TV because I hardly watch it, it's just good to have for the kids and to watch the news. So I followed your instructions, so easy to understand. I used to help my dad around in the shed when I was little but I'm no electrician and this was really easy to do. Two of the capacitors were obviously bad (bulging), so I replaced those but it still didn't work, so I took out the remaining five capacitors (which looked ok) and replaced those too. I bought some solder just to make sure the connections were all good, and replaced them all in probably half an hour. Turned it on - works like new!! My kids and I were high fiving! And this TV is over 10 years old. Total cost was around $20 for the soldering gun, another $15 for the solder, screwdriver, pliers and wire snipper, (all from Bunnings) and around $7 for all 7 capacitors (Jaycar). Total: $42 which is way better than the hundreds it would have cost to have it fixed or a new one. Thank you, this is seriously good karma for you. x