LG 42PG20 Plasma turns off when cold.

A really nice plasma was rescued from the recyclers.
This one needed to be turned on about 10 times for it to stay on. Definitely a power supply issue.

[@jamesconway5221]

Hi 12voltvids. Joining caps together is a excellent job and I am sure you have checked them, I have often done the very same and now they are 25 volts so it's another plus it does not matter that they are pulled arts or not, I will never use 6.3 volt or 10 volt caps and with joining them together usually are a much lower ESR anyway, it's a thumbs up from me as it's the way to go,👍 they will be perfect so excellent work as usual and I don't have to say they will last much longer but you already know that, I agree plasma ok they are a heavy set but much better than LCD or LED do not last, so great work an thanks for the video. Kind regards from Jim. 👍👍👍

[@12voltvids]

Yes parallel caps greatly lower esr and they run cooler.

[@GlynWilliams1950]

Good tutorial. Thanks. I should be able to repair mine now.

[@realgroovy24]

Yep! a decent set saved and good to go to another home!

[@TherapyWithRicardo]

Hey 12voltvids, huge thanks for this video tutorial! My sister was throwing this tv out because it would not turn on - so you just totally hooked me up! I ordered the capacitors online, and thanks to you my kid now has a pretty kick-ass gaming tv. Thanks, again. R

[@12voltvids]

These are geat TVs aside from this common fault. Mine still works fine, as does the 50" samsung I put the buffer board in. Had 2 of them given to me the same day.

[@MrReeceyburger123]

I agree Plasma are bloody awesome :)

[@akawireguy1197]

I agree, the tank video is wonderful.

[@DrCassette]

I guess they put the two 3300 µF caps in parallel to get lower ESR than with just a single 6800 µF (6600 µF doesn't exist) capacitor. So you could say you've improved it even further by putting in all the small caps in parallel. Their ESR can go up quite a bit until the TV will complain again :)

[@12voltvids]

DrCassette Very true, but I think they probably put them in series to get the capacity as opposed to lowering the ESR, because if it was just obtaining a low ESR they would have put a bunch of them in parallel, and likely chokes in series with the caps.

[@DrCassette]

They probably used many other 3300 µF caps in the set, so putting two extra ones on the parts list would have been cheaper than one single 6800 µF cap. The 6600 µF are well within the wide tolerance range of a 6800 µF electrolytic cap (-50% and +100%).

[@12voltvids]

DrCassette Didn't see any other 3300@10v in the set. Had they put in 16v or 25v rated parts they would have never failed in the first place.But then the cost difference between 10v and 16v is going to put the company into bankruptcy, so lets go cheap, make it last past the warranty so we can sell them another one in 5 years.

[@markmarkofkane8167]

Another one I missed. Glad I found it. 👍 Do you still have it? Just curious.

[@12voltvids]

Yes still have it. Will put it back in service some day if it still works. It's in my bedroom waiting for a Samsung with a bad screen to finally die.

[@andisadler2897]

Well this guy a tv god. Plasma all day long for me also. I have 4 tv in our house. Samsung 37 lcd, Panasonic 42 Plasma. LG 42 Plasma Sharp 60" Internet LCD and i paid 20 uk pounds for the LG and think its the better of all.

[@bones007able]

I was always told the flat screens only last 3 or 4 years... I purchased a Plasma 47" LG branded as a Zenith... Mfg in 2007... 12 years later it is still going strong.... only other problem with plasma is picture screen burn if you are not careful...

[@12voltvids]

I have several plasma sets. Oldest is 2003 newest 2012. All work. A couple have a vertical line or 2 (failed panel) but those used for gaming. One has a cracked screen, watch the news on that and it has the global bug burned badly because that is the only station I watch on it but they all work great. Every led set I have had has had problems after 3 years.

[@timtreinen6051]

Once again nicely done. 0$ in parts and and set for your inventory.

[@cogsinister100]

Great job, lots if useful tips. Oh and as a side note, i was in Value Village last night and picked up a Sony SL-HF400 super Beta HiFi, quite clean, seems to have come from Winnipeg so its had a long ride, great picture and sound, just a slight problem on loading and unloading the tape, i will watch your next Sony Betamax video for tips on sorting out the loading/unloading..

[@12voltvids]

Neil Robinson SLHF400 good score.I will be looking at my other 1000 probably on the weekend.

[@rogerd4559]

You mentioned in you previous video that you didnt have a circuit diagram for your TV you were working on. Do you have a source for electronic diagrams and schematics for all the TV 's and equipment you work on? years ago I used to relay on "SAMS" publications for the old CRT TV's

[@12voltvids]

Many schematics for audio products are available at hifi engine. Tv manuals are not available and if they are I haven't found any.

[@rogerd4559]

@@12voltvids Have you investigated SAMS publications for schematic diagrams and repair instructions? I used to use Sams back in the 50's to 80's. Dont know if they are still around or if they even produced schematics for flat screen TV's

[@12voltvids]

@@rogerd4559 We used to have Sam's at the shop but I have not looked for flat panel sets. I am really not all that interested in fixing them. For that matter I am really not all that interested in fixing any electronics these days. You probably wouldn't know that from all the videos I have put up lately. I did repairs for 20 years full time. Now I work in telecom and just work on electronics when I am bored basically. I certainly don't do it for the money as there isn't any to be made. I do it so I can make a video for the yt channel because I make much more from the views than from the repair. Much of the stuff I fix is my own stuff too that people give me as it is on its way to recycling. I fix and if I can't sell I donate it to value village where they put it in the thrift store.

[@aryonllewellyn]

I used to have a Relisys 42" plasma TV that worked fine. Then suddenly the power wouldn't stay on. I was told it was caused by a chip on the power supply. After servicing, the chip needs to be changed to tell the power supply that the set has been serviced, otherwise the power won't stay on.

[@rogerd4559]

I added fans to my video capture card/DVR and to keep any noise down I built a simple circuit that varies the speed of the fans as needed so they only run fast as needed. Only on really hot days do they crank up. So I hardly ever hear them on my security computer. I also added that feature to a 5 way splitter/amplifier so I can run 5 monitors off of one computer. that way I can have a monitor for my camera system in all my rooms. Yes I tried just two monitors on a Zotec GTX 760 and it only lasted a month. This sytem has lasted 6 years so far If I only had the room inside of these monitors I would add fans as well

[@sirajnoor7073]

Hi lg plasma 47 inch model 42pG20R sound ok picture not coming tell me what problems pl

[@karlkirven8174]

I have this same TV 📺 that have the same problem I replaced all the same compositors plus the 3 , 10 volt 470 uf compositors that where blown as well it did come on after that but soon shut back down after a few minutes what do you think I should check next , don’t see anymore blown caps but the problem still exists if you still had this problem what would you check next ?

[@catsbyondrepair]

i agree lcds tend to look bad because of the matte screens

[@12voltvids]

+YUKI JINJUJI And I always thought it was the poor contrast, and bad view angles.

[@blackiemantinto1870]

My 42PG20 Plasma turns off after abiut 30minutes.When you switch it on it does not. Only after a couple of days it may turn on then off again .What could be the problem?

[@MsCori76]

My lounge room LG Plasma tv is exactly the same as this one & yes it’s doing the same symptoms, clicks & takes awhile to turn on.

[@rogerd4559]

time to get in there and change your caps Lady! :o)

[@bakarrmallah2180]

Hi my lg 42pg20d standby light is on good quality sounds but the screen is not working

[@LinaWaifu]

Is it expensive if i take it to a tv repair place?

[@rogerd4559]

Not worth it. They will charge you the same or more than a new one. Possibly make it even worse then it was. Best to find a friend, neighbor or co worker who will do repairs for you, or if your handy with a soldering iron do it yourself!

[@redrooster1908]

@@rogerd4559 than, not then.

[@silkyces]

Betamax! was that not around in the Stoneage ?

[@12voltvids]

Wavy Davy101 It certainly was in the early days of home video. At one time had big percentage of the market.

[@jessegaspar911]

What screws go in the tv stand? I had it on the wall for years but now I’m moving it to another room and can’t find the screws for the tv stand.

[@hannonm]

hmm how did i miss this one?

[@hannonm]

Oh wait, I remember this one.

[@ramonprada9766]

buenas noches, cuales son los voltajes de salida en VS, VA y m5v, de gracias, (good evening, what are the output voltages in VS, VA and m5v, thanks)

[@jameshanley9102]

the amount of tv,s mounted on your wall you wont need paint or wallpaper lol

[@12voltvids]

I have 2 mounted TVs. One in the media room and the other in my office.

[@THOMMGB]

Thank you for all the good information. Recently I found a Samsung 50 inch 1080p plasma on the side of the road, alongside a bunch of trash. Made in Sept, 2007, this set was totally dead. Turned out one of the four 12 amp power supply fuses was bad. I replaced that and it started right up. It looks wonderful. I picked up an original remote on Ebay. From research, I found that this set has four 2200 mfd 10 volt capacitors on the power supply board that cause problems. I replaced them with quality 2200 mfd 25 volt capacitors. Other than being a power hog, I'm very pleased. Your video makes me feel a lot better that I did the right thing by saving this set. How would you compare a plasma set to the new 4K sets coming on the market? Regards, Tom

[@12voltvids]

THOMMGB Plasma still have better contrast, and the contrast realm makes the picture.4K can look specular, but they don't have the contrast ratio, but they do excel in resolution. The holy grail of displays is OLED, or as it is sometimes known in the pone arena Super AMOLED.OLED, like plasma the pixels produce the light rather than operate as a shutter to block the existing bright backlight.So you can have totally black pixels. A 4K OLED is what I am saving for.They will be out this fall.

[@THOMMGB]

12voltvids Thank you for your very detailed answer. I suspect a big screen OLED TV is going to cost a pretty penny. I'd like to get one, but I'll have to wait for the price to eventually come down. Or, I can skip all that waiting stuff if I win the lottery. :-) Regards, Tom

[@12voltvids]

THOMMGB OLED is still pretty expensive. 4 grand for a 1080p 55" but there are some 65 both 1080 and UHD coming out soon, and in a few years they will be affordable. Till then I will stick with my plasma.

[@xerejuneseve6333]

Yeah, LCD[LED] tv are worst than Plasma,but we wait for cheap OLED goods. 8)

[@12voltvids]

+Blahblox Gyuanox I have seen the new 4K UHD OLED sets by LG. Stunning is the best word I can use to describe it. I have never seen anything so good in a 65" TV. Mind you it was prices in the stratosphere, at 10,000.00 but that will drop.But until that day happens, I am keeping all my plasmas running in tip top shape.

[@int53185]

+12voltvids zI have three old Panasonic Plasmas that I got cheap and repaired. The 50" 1080p set has a jaw dropping beautiful picture. We had fiber optic internet and tv installed recently and the installer commented that it had the best picture he's ever seen. Five exhaust fans and a full complement of boards. They don't make lcd's half that good. And a panel half life rated at 60k hours it may last forever.

[@12voltvids]

+James Last absolutely. I have 3 Panasonic plasma. A 2010 42" 1080p in my studio, a 2012 50" 1080p I got for free. Beautiful picture. A 2004 42" 480p SD set not HD but looks great. Got that free too. A 63 1080p Samsung, when Samsung made a full 1080. I was then given a 42 LG and a 50 Samsung 720. Got them working. Most recently a 50" 3d that needs a y sustain and another 50" 1080 that was brought for repair back at Xmas . Abandoned. So I think I am good with plasma sets for a long time. I like the oled and would like to get a 4k oled so I can watch my videos in 4k but these plasma just look too good. I install fiber TV for a living so I get to see everything out there and nothing compares to the plasma for picture. It was the cost to make them that spelled the end of production, nothing else. Uneducated sales people helped too.

[@desmondharris1193]

so, what if you can't see any bulging? but still get a clicking sound?

[@maudell27]

That's the problem I'm having. Has he answered you yet sir?

[@maudell27]

kzbin.info/www/bejne/r4K2eXeqnt1mhs0 This might help. Be safe, hope things work out sir

[@andrewsawesome]

​@@maudell27You will have to take the capacitors of the board and test them with an ESR meter like the MESR-100.

[@rogerd4559]

How can you tell a Plasma tv from a LCD or LED tv other then the quality of the picture?

[@12voltvids]

A plasma, like an OLED set has a very wide viewing angle. LCD have a much narrower view angle especially vertical. Led are just LCD with led back lights. OLED is totally different technology and is replacing plasma as the king of picture.

[@rogerd4559]

@@12voltvids thank you for the detailed education on them!

[@ShatteredF1re7733]

Plasma TVs feel like they are made out of poured concrete. A 60" plasma tv weighs 106 lbs. A 65" LCD is 25lbs. LCDs today have a very wide viewing angle. Viewing angle was a problem when LCDs were first introduced.

[@ericwhite1427]

Great video 12voltvids! The 2 same capacitors (232 and 234) are bulging in my fiancés same tv. My local electronics provider has 3300uf 16v 105C 16 x 25. The existing is 10v. Can these work? Thanks 12voltvids

[@12voltvids]

Yes you can always up up a bit in voltage. If they had done this at the factory then they would never have failed in the first place.

[@12voltvids]

Yes you can always up up a bit in voltage. If they had done this at the factory then they would never have failed in the first place.

[@michaelpickarts7683]

At first It lookted the TV is the Wall

[@turnipgaming9747]

LED & LCD tv's last longer than Plasma tv's also most people hate plasma tv's and Now LED & LCD tv's are way better picture quality than plasma tv's so yeah never underestimate a LED & LCD tv

[@12voltvids]

+Turnip Gaming97 Not from what I have seen they don't. Most people are uneducated in this field. They buy what is cheap. Have no choice as they don't make plasma anymore, and it was the production cost that spelled the end of plasma. Led back light looks like crap. Contrast varys as you move side to side or up/ down. Why do you think the gimme of the curved screen. To mask uniformity issues. Curved screen is just a way to fool people. The only technology that can match a plasma and is superior is oled.

[@turnipgaming9747]

Not everyone can afford a plasma TV if they still made them they would cost nearly 2k also to me plasma tv's flicker which they strains my eyes. I've seen LCD tv's that can put out 4k picture quality which they have to since the Xbox One and the Playstation 4 came out and for the people who like awsome picture quality so they can watch movies in 4k that's my opinion that's all I'm saying

[@12voltvids]

+Turnip Gaming97. 4k was one of the reasons that plasma production ended. Just to get to 2k was serious engineering challenge. 4k on a screen under 100" would have been technically impossible considering the complexity of a plasma panel. Lcd technology has improved and they can manufacture extremely cheaply as they use ic manufacturing technology. Photo etch glass essentially. Oled is superior in every way, but it is exceptionally expensive when you go beyond phone or tablet screen sizes. It does yield the absolutely best picture though. I have oled on my phone, tablet and my cameras all have oled screen and eyepiece. My next TV will be oled, and 4k. The problem is right now it is only available in a curved screen, a that is a deal breaker. The 10,000 price tag is also a little steep. I'll wait a few years an keep my plasma TVs running till then. So if the 600 hz plasma flicker bothers you the 50 or 60 hz refresh rate on the old CRT must have driven you crazy.

[@turnipgaming9747]

okay is that how much they cost in the US ??

[@12voltvids]

+Turnip Gaming97 In Canada, the new 65" 4k oled TV from LG is selling the 9,999.95! The 55" HD version from last year is still 3 grand. A very steep price for a TV, but there is nothing else on the market that is comparable yet. LG have an exclusive agreement in place with the panel developer currently, I I wouldn't expect any huge price drops on that technology for a few years. If you get th chance to see one you will be blown away by the image. I hav yet to see anything remotely close to this quality of picture, but being a photographer I have a pretty good eye for image accuracy. It's at the top of my wish list.

[@Testpilottim]

Do you have a Tesla car

[@ChiyouPWu]

I want one

[@acsartur]

pedia se era possível arranjar-me o esquema tv plasma 42" modelo: PDP42V7M462 N/S: C06044SN90142 que muito agradecia obrigada costa

[@michaelpickarts7683]

2any names will no weight until I get my ??????board elect rike lu$terboard$ existmie

[@VictorHugoSepulvedaMendez]

You talk too much and you work very little, just to change two capacitors that you see that are deteriorated by just uncovering the device

[@12voltvids]

Victor Hugo Sepulveda Can't please everyone. When I don't explain things then people get upset that I am not explaining what I am doing.