Do you agree this is the most common fault on a old TV?

“…Capacitor is eating, eating all those spikes.“ That’s the best explanation I have heard for what a capacitor is doing. You’re awesome.

A lot of shops will not work on old things like that. When a person asks for repair on old item, they usually have little money. Good on you for fixing it.

Sorin "You can see fault from airplane"....I'm stealing that one! 🤣🤣🤣

Found a 42" LED set junked on the street this week. Mains cable had been cut off and it was soaking wet, but the screen appeared intact, so I thought I'd take a closer look. After I'd let it dry out for a couple of days I bodged a mains lead onto it and powered it up, surprise surprise, stuck in standby. Opening it up revealed the standard Vestel boards, and the equally standard bulging capacitor. A few pence worth of parts, and I have a rather nice big telly in my living room now. :)

When I was in 8th and 9th grade, I was taking electronics classes in Junior High School. I would bring old radios, mostly tube type, to school and fix them. I enjoyed it a lot. Often it was just the power supply filter capacitors like this, but I also replaced bad capacitors in the circuits. I would then adjust the tuning coils, and those old radios would work great! Often I could get better sound and reception than a new radio.

Hi Sorin From my following your vedios. I was abled to repair my Air conditioner board. It was on but outside compressor not starting. I tested the outside unit by bypassing the AC and it worked . So the problem is whether from the relay or something else. I tested the relay and is us good when I checked the voltage on the main board traces I found less than 12 volts. As I learned from you I focused on the capacitor after rectifier and changed it even there is no signs on it that is blown. The Air conditioner is working properly. Thank you so much Sorin for your valuable lessons.

Nice Fix!😉 I also miss fixing TVs , its just not worth it nowadays......😑 Used to fix a lot of them and also PC Monitors had the same problem. I stared my apprenticeship repairing CRT-TV's which mostly had cold solder joints and dead line-driver Transistors Then LCD-TV which had a lot of problems aside form those caps...(dead CCFL inverter or LVDS TCON board/cable)

I was so proud when I opened up my dead Vizeo monitor, and found a burnt ceramic capacitor. I got a replacement on eBay for peanuts, and a Walmart soldering iron, and I was back in business!

Great job! This is truly a common problem and I have repaired my Samsung ($$$) by replacing the two capacitors shown for under $2 when repair quote was $400. One point, though, capacitors have polarity and need to be replaced respecting the polarity or new capacitors can fail immediately. I suggest pointing out a bit more clearly how to determine the polarity of a capacitor and then how to know the polarity marking on the circuit board. This is best done before removing the old capacitors. Good job right to the point.

I love it, just discovered your channel while trying to 'learn' to repair an 24v inverter (solar inverter) and after watching you repair things and some of your teachings, it's really starting to sink in. Thank you for sharing your content. Just realised you're in the UK too :). Watching a lot of your electronic lessons as well, watching you repair stuff is great though. I'm working my way through your TV repair playlist... It's really interesting when someone can share and explain their knowledge to you ... I really appreciate you doing this! The only issue I have, is while looking up parts for my inverter, I have to buy from China and they take forever to buy... I think my new capacitor is going to arrive in a months time! :) It must be hard to build up a stock of repair electronics. Thanks!

Bravo. I really liked your approach to making the caps better by upping their voltage rating. Bravo. I salute you. I am now subscribed. Thank you for sharing your knowledge and skills with us.

I love how you explain why the part went bad.

I had an old 32" Westinghouse LCD tv a few years back that was dead (but the audio still worked) and the power supply PCB had a few bulging caps that I replaced and brought it back to life. Saved about 300 bucks

Great and knowledgable videos. Don't need to watch item being unscrewed for about 3 minutes plus. Thx

I am happy when you say job done . Thank you Sorin

Capacitors are no longer the most common fault. I'd say back lights and mainboards at the top two issues with the newer TVs.

Thanks Sorin! Amazing video, I like your energy :) always makes me smile :D

The main man,just love learning from this guy and a good video once again thank you

👍Thanks for another great instructional video!👏💡

Thank you for your video. I learned from you today👍

Used to fix TVs for a living myself, back when I was very much younger. He's right about the power supplies being the fault, quite often. Often, in those earlier TVs, the part of the power supplies, it was the part of the fly back capacitors. A 10 microfarad cap was dead or sorted out, and then the video part would be displayed as a horizontal line or maybe no video at all. The audio would be okay though. The value of the display cap? 10 micros at about 150 volts.

Yes a tv repair! I like this always easygoing. Thanks for the update

Great job! 👍 Love your videos.

It's the heat that "Jiffy Popped" those capacitors. A higher working temperature would help, higher working voltage wouldn't hurt either. Good quick repair Mr. Sorin.

I fixed my own DAC headphone amp by replacing two bulging capacitors, I was so happy because that thing cost me $650

gotta love that quick fix.

I just got a not working LCD from my neighbours CCTV system that he wants me to have a look at while he is using my spare one. This video couldn't come at better time as I know nothing about TVs :D Cheers, Sorin!

I had a 42" TV that had a bad Power Board. It was an older TV, and the replacement board was a few dollars cheaper than buying a new TV with a warranty. I suspected the capacitors were blown, but saw no visual indication of that, but almost 100% that was the problem.

thank you for sharing this with us!!!

Thanks for great videos

Thank you very much for the information

Power supply smoothing caps, are always the first thing to look for , after checking for power input and the rectifier.

Nice quick repair

you nearly burnt my nose with that soldering iron!

Good job mate 👍

Remember those tube type televisions where a technition would come out to your house take the back off the tv and start resoldering those big circuit boards and changing capacitors etc. I believe a lot of tubes were made at Mullards in Belmont Durham. Factory sadly gone now

Most common fault. Few days ago I fixed 3 old monitors with this issue. Eazy peazy

Years ago I randomly try to fix a flat TV faild like this video thanks 😊

The DC voltage rating of the cap, has absolutely nothing to do with the ripple current rating. The higher the capacitence, the higher the ripple current rating

Yup. Same problem with 90% of the failed LCD monitors. 15 minute fix, minimum charge + parts. Usually around $50. I could them all day long.

I agree that caps is the most common fault, but sometimes the power regulator will fault. That component is use to ensure a steady voltage through all operational conditions. Regulates voltage during power fluctuations and variations in loads.

have you ever heard of an incorrect HDR setting causing picture loss, not picture signal loss but just making the screen go black? I have been using my 55 inch 4K RCA TV as a computer monitor for years. Throughout the years I have had a constant problem of the TV picture randomly going black but still having audio. This will happen when I'm watching videos or sometimes looking at a photo slideshow. I will have to change the input in the menu to a different source, then change it back to get the picture back. The really weird thing is if I went to the exact point in the video where I lost picture the TV would lose picture again. I just recently turned off HDR on my TV and I haven't had the problem since.

Nice video demonstration... Tip: A 470uF/25v can be replaced 470uF/35v if there's no 25v... You can also use an ESR meter to detect a dried up electrolytic capacitor...

A lot of people want to repair their TV. Not everyone wants to go buy a new tv when it breaks. But not a lot of people repair tv’s anymore and it’s sad.

I recognise this power supply! Lord, I miss repairing TVs…

Last time I fixed a TV it had a bad 33GY7A vacuum tube!

Thank you for the clear and simple explanation with a few good tips. I’d have burned two fingers opening that blocked solder joint before inserting the new cap. 😂

I've repaired a bunch of tvs over a period of 6 years. I've never had one where The capacitors were blown. You youtube guys amaze me when you come on with this problem. Makes a easy presentation, doesn't it? You guys are too funny! This is not a common problem with tv repair.

Your idea of an old TV is a little different than mine. No tubes (valves) in that one.

This is why we need to move to home DC ASAP!

Old school skills! Impressive!😃

nice an simple great video my friend

Eating all those spikes. Jesus. I love that statement sir. Good Work sir

On monitors too,i am also checking with esr meter..

Bob Parker blue esr meter is an absolute must . Not all caps are swollen.

When I think old I think back to the big black&white CRT TV I saw the moon landing on in 1969 It had a Bakelite case and dad called it the black box. I used to go to Sears with him to use the tube-tester and buy tubes. This is not old to me.

I miss the old days of in home component level repair of Crt rear projections and direct view, Especially the Mitsubishi 40 inch, Lots of fun. I went through a lot of capacitors and convergence i/c's.

Old is a relative term. Old TVs had tubes. The most common fault was a tube going bad, or possibly an overheated capacitor.

Thanks for the video, I have fixed a Samsung Monitor the same way, Bad capacitors just like that TV's. Is that a Weller solder iron? I'm using my vintage Weller WTCPN

great video.. would the same thing happen to a pc monitor ?

Classic bulging capacitors, I`ve fixed a power board today also. Same fault

Watching from philippines

Thank you for an informative video. We have a Samsung TV model UA43NU7 100S, it recently puts out a dark screen, no picture on about one third of the screen, on the right side. The rest of the left side is fine, what can be the cause of this? Your help will be much appreciated, thanks.

GENIUS

Nice volg 👍👍

I ve got a hot tub, and the motor was playing up, when the engineir turned up to check the motor, we noticed the capacitor was "buging" £600 for a new motor! i asked him how much for a capacitor, £20 he replied, so it was a £20 fix!

Spare parts problems are common to technicians around the world. .Especially the parts that are older than 10 years and the datasheet is difficult to find. Where do you have a reliable source to find it . Thank you very much ..

Thanks!

I usually hope for blown caps when I'm opening the set up but more often than not it's backlights, diodes or a main board issue.

"old dead TV".... i was looking forward to see an analog one :o

I was working as a bench tech 20years ago repairing desktops and Laptops for a company. About the puffed-up capacitors. What i found out it was from industrial espionage. Someone broke into a large capacitor manufacture's computer system, could have been Nichicon not sure. They stole what they thought was the formula for the capacitor electrolyte, but it wasn't. The company kept the formula in 2 parts and the thieves only took half of the formula and with that they made counterfeit capacitors from all the major companies. Around 2001-2003 we received a lot of motherboards and power supplies with puffed up capacitors. Nothing else wrong just the puffed-up caps. A few years later I got a Job working "IT" for a very large company and they had Dell...we had a flurry of Dell's with puffed up caps. Then after the caps we had all the Dell laptops with bad GPU's, seems if you did not clean the cooling fans and they got clogged the GPU chip would get hot enough to de-solder themselves😃. I heard of people putting their mainboards in the oven to reflow the solder. Never tried that b/c Dell extended the warranty and took them back. One time they sent me 20 new laptop mainboards it was so bad.

Thank you for your video :^)

Back in the day it was horizontal output transistor bridge rectufier diodes and cold solder joints

Hi everyone. The secret rule on nearly every plasma, tabs etc is vol dn + pwr on.

In SMPS the frequency is very high, so the capacitance becomes relatively unimportant. What is important is the internal resistance and parasitic inductance of the capacitor. The two 470uF were put in parallel not so much to build the capacitance to 1000uF, but to reduce resistance and inductance. Whether you made up 220uF or 2200uF likely would make no difference to the circuit. Consider having a stock of polymer capacitors which feature long life and low ESR.

Good job............

Bad capacitors are the #1 cause of failures in HVAC systems. They are much larger, and cost about $10. I keep one for my AC, next to the one that will probably fail one of these days.

wish I could find a video on fixing an LCD backlight issue that's not the actual LED strips that are damaged.

Outstanding!

3.5 mins to open it! - but video APPRECIATED - old git, UK

What about the Farad rating of the capcitor, should it match the same as the faulty or higher

electrolytic caps can and do go bad. You can tell the bad ones for they bulge on the top. only electrolytic caps are polarity sensitive

EVERY older TV that dies on me has been a recap job. I replace them all but probably could get away with just replacing the Power supply caps. Usually if not a power issue it will blink a code that points the way.

Those capacitors (electolytic) were almost certainly manufactured in China. They ended up in HP, Dell and other PCs. Ended up in top line servers at the time like HP ML350 G5s. Our company got saddled with repair costs. And all because of scammers in China using inferior materials. I has 10 year generic PC I try to turn on recently and over 20 caps were swollen.

The manufacturers choose poor quality electrolytic capacitors in order to assure that electronics will fail soon enough for planned obsolescence.

hello sir ,excel video as usual . i have couple of questions regarding what you said about higher capacitor . a) higher voltage makes sense , is it also okay to use higher capacitance ? b) is it same formula for SMT capacitors on laptops . c) i am working more on car diagnostics tools /boards . there are RELAYS which play very important rules . now my question is can i use higher vol relays ? for example there are plenty of 5volt relays , can i use 12 volt ? nd is it ok to have mixed 5v and 12v ? many thanks i really hope sometimes you make videos about car computers / ECU and diagnostic tools .

And make sure you use quality brand caps rated for power supply's (Brands: Rubycon, Chemi-con, Panasonic, Matshushita, Nichicon, Sanyo, Hitachi, Samxon (except their GF series) with 105'c+ rating) otherwise they'll pop again soon. Some of the crap brands: G-Luxon, Su'scon, Lelon, Ltec, Jun Fu, Fuhjyyu, Evercon.

Not sure. I don’t trust the Internet. Maybe it was the caps, maybe not. I'm sure your fans enjoyed the show. That's what brings in the cash. you're awesome. Like to see you fix a USB-C power input on an LG Oled tv. That would be interesting. Good Luck. 👍🏼

Great video thanks! But that guy with the parcel tape needs to bugger off!!

ty bruu

You should at least check the defective part with rlc multimeter to make sure its the defective one. I repair my plasma TV 50" when it went out with a big pop, really loud. I open it I could smell some burn something. So I look at the board it was a capacitor, remove it measure it no value. Replace with the same value it Works again.

So, correct me if I'm wrong, but are these caps the ones that are in circuit on the output lines of the rectifier, before a DC regulating circuit, the ones that filter out AC ripple? Is the fact that the caps were abused to be blamed on fluctuating input ACV outside the V input limitations of the rectifier?

Remember CRT tv. High and low voltage, RF and downwards, discrete components etc. Just about everything in the one box.

Its working man!!

You need a desoldering tool. Quick and easy to prevent over heating the trace.

An LCD screen (46"), about 11 years old, regular household daily use develops horizontal bands of snow that flash. Broadcast image still there to, sound is fine. Could this be a cap issue? (Toshiba 46G300U) Thanks for sharing your repair. I have a dangerous amount of electronic knowledge and skill. Looking forward to using it, and your work inspires.

I have fixed several flat scrren TVs and monitors that I got for free by replacing the bulging caps.

repair business' trade secret is not how to repair but how to open those finicky tabs. i tried to change my mom's vacuum cleaner's cord and spent a full afternoon prying every nooks to no avail. even the repair shop admitted they had to visit a more experienced colleague in order to watch him open it. and most of the repair videos from repair shops skip the opening process.

hI. What about a car display central console that it's working but the image will show up a little bit later like 5 minutes, but the console it;s working, only the image will show up later than usual. it happens like this when is very cold outside. Any idea? Thanks!