Always check the main filter cap. just because they cost 10 x as much as the ELV electrolytics doesn't mean they don't fail. Usually blown bridge diode cause by faulty main filter/storage electro.
@27merk I had a 200v 470uf partially fail and sent a signal through the audio as well as mess the screen. Nichicon too. As soon as I had it assembled and back on top of the fridge (27") the vertical IC failed. blankety blank blank blank!
My brother and 90-year-old father had bad power supply caps in their big screen HDTVs. Both warranty repair. One was fixed with a hand- full of caps, but the other was the lazy board replacement. Two different shops did on-site repair. Both dad and my wife have this monitor. No problems after more than 3 years of use. Go figure!!!
@maplewoodsp It really depends on the total hours of on-tme, and the temperature inside the monitor. It's also possible that yours happen to have a slightly better brand of caps.
I had a problem with my 226CW in that it was getting dimmer and hard to read. Was hurting my eyes as I couldn't focus on the text very well. Searched for solutions but found only replacement cap videos. I looked at the Win XP properties for the monitor and changed the Samsung profile to default profile and it brightened right up! When I installed the monitor there was no Samsung profile on XP. Perhaps an XP update installed the profile on me?
@bamboopavement I had a similar issue on my system too. My LG monitor had a custom profile that made everything look like crap. The default Windows profile is much better.
I've noticed that most Samsung monitors I've seen have tended to be on the pink side. On the older ones, the backlight lamps cause some of the pinkness when they start to go bad. Other times, the monitor is just configured wrong from the factory!
I have this exact issue with my 226CW. My monitor is to a point now where it won't turn on at all. It started with the monitor screeching while it was plugged in but not turned on. It moved on to strobing for a few minutes after I turned it on. Finally it went on to continuously restarting itself over and over and then strobing before it would stay on. Now it is dead. I'm going to buy a new monitor, but I still want to give this a try. Do you think you could provide a link to the capacitors?
What the skinny rubbery piece beside the three 830ufs? It has no markings. Mine says cc021 in the L101 spot. Is that where the 330uf cap or is it a different type of capacitor or is it a type of fuse? It definitely has different diagram markings then the 830 uf spots.
@lucakiss70 The expert I spoke to said there was pretty much a 20% bar of error that was fine as long as it's a filter capacitor, which these must be then. :)
Congratulations on getting your screen working again, I can not express my joy that I fixed something that would cost me $200 to replace with $4 and an hour. :)
This is one poor effort. The most important thing is taking the cover of and actually removing and fitting the new parts. Must think people are fookin phsycic
i have samsung bw 906 i have same problem but,i don not know how to check these capacitors,my circuit board is same as your's,but from outside capacitors looks ok to me,how can i check capistors on circuit board which one is bad or i have to pull capacitors out of circuit board then check please help me for this
Thanks for this video, it's really helpful. My monitor is still working, but I think it's in in his final days... thank God I looked for a solution before I called the priest :) Greetings from Hungary!!
I have this same exact monitor and it's been flickering for awhile now, but I can't seem to figure out how to get into the damn thing! lol Help?!
I've taken apart and fixed/cleaned just about every other electronic device we've EVER had in our house at one time or another before, since my kids (and husband) are hell on electronics! But this stupid monitor's giving me a hard time even getting into it. Any suggestions?
Hi, I want to know the valuesof capacitor failure. In the movie we see the first two from 820 microfarad 24V, but the other two capacitors neighbors that have value? thanks
well my monitor just started flickering for some days now, and with out these videos i would have never known whats wrong with my 226BW. I know nothing about eletronics repair, so hopefully someone local around me and fix my monitor for a decent price, how much do you think it would cost if i were to pay someone to replace bad caps ??
@SensiRootsBoy The parts cost around $10 or so, and the labor would vary depending on who works on it. It took me a little under an hour, but I have decent soldering/desoldering equipment to speed things up.
@Maxxarcade Indeed, however It's good business for me and some people even wanna throw the device in the trash, I tell 'em I'd like to have it. After replacing a few cheap parts for proper ones and I've got an extra device to sell
@Djkyle65 I work with a lot of stuff, so I have a good idea of what sizes are best to have on hand. I get most of them from Mouser Electronics, but some types that I use in tube circuits come from other places.
Still have a BenQ LCD that turns itself off right after showing its "energy star" splash screen. I'd so love to check for bad caps, but can't figure out how it opens!
what do you suggest i do with the dell 18" flat panel monitor i have? it turns on normally for like 10 seconds then shuts off. keeps shutting off. i looked for bulging capacitors and didn't find any.
@fordbroncodave Caps don't always bulge when they are bad. Another possibility is that one of the backlight lamps (or its associated inverter circuit) are not working. That can cause the monitor to shut off after a few seconds. Usually the screen will have uneven brightness or be dim when any lamps are out.
If it has an external power supply, that could also be going bad.
@Maxxarcade I think that's what happened to my 17 inch flat panel Dell. When you turn it on, it sometimes will stay on for a while, but eventually it will turn off. The bottom part of the display flickers and has a red-ish tint to it. If you turn the brightness down all the way, it will stay on longer. If you turn the brightness all the way up, it shuts off right away.
@XxMEVANSxX Ya, I hate to think of all the nice big LCD's that get tossed because of a few bad caps. I wish someone would toss a 30" or two so I could grab them :-)
@Maxxarcade There are some nice tvs and monitors out there with minor failures that still work and look great when they're healthy. I've fixed a nice 42" (that I'm watching as I type), I'm working on a 37", then I'll be looking for a 26-32" to put in my garage - all hopefully for less than $400 total including parts.
@37474748 The caps have a stripe on the negative side, and the positive lead is longer.
As for the board markings, it varies. You usually need to look at how one of the existing caps is installed first. The conventional way is to put a black stripe on the negative, but some companies do it different (or backwards!).
@Maxxarcade yeah i need to recap an motherboard so i will run into that issue. is there any positive markings or sutch on caps?
if i remember my school right the Microfarads should be as close as posible but the voltage can be higher of the cap? is that correct? And caps are like led's they only work one way around. And the other way they pop.
@37474748 Yep, they are polarized, and you can use a higher voltage. Only issue is the physical size must be the same. Sometimes you can use taller ones, but not usually wider. The positive lead usually is unmarked. It is also the longer lead on a new cap.
@Maxxarcade how would you go about to diagnose caps on an solid state board? with those smaller caps? As i understand they dont bulge up like the one you showed? how do you know what to swap there?
@Maxxarcade oh i dont have one of those :( im really bad at component repair. i can do some if i see the problem visually but i dont know more really.
to bad there is no one really that does motherboard component low level repairs.
I really like your skills and your channel though. You know your stuff man :)
I was talking with a saleman aobut LCD TVs, he thinks they will last a long time. I told him that the power supplies often are junk, and also those light tubes can go bad sooner than he may think. The LED backlit LCDs may be a lot better.
@umajunkcollector The LED ones I've used so far were great. Haven't had to open one up yet, so I can't say what kind of caps are in them. But at least the backlights will never get dim like CCFL's.
CCFL's generally last around 40,000 hours or so. Usually the caps go first. Though I've seen a few laptops with bad CCFL's. They must run hot or something.
show how to take the cower off!!!
MRMitek100 1 week ago
Always check the main filter cap. just because they cost 10 x as much as the ELV electrolytics doesn't mean they don't fail. Usually blown bridge diode cause by faulty main filter/storage electro.
27merk 1 week ago
@27merk I always do an ESR check on them, and in most cases they are still good. I have come across a bad one on occasion though.
Maxxarcade 1 week ago
@27merk I had a 200v 470uf partially fail and sent a signal through the audio as well as mess the screen. Nichicon too. As soon as I had it assembled and back on top of the fridge (27") the vertical IC failed. blankety blank blank blank!
madisonelectronic 1 week ago
My brother and 90-year-old father had bad power supply caps in their big screen HDTVs. Both warranty repair. One was fixed with a hand- full of caps, but the other was the lazy board replacement. Two different shops did on-site repair. Both dad and my wife have this monitor. No problems after more than 3 years of use. Go figure!!!
maplewoodsp 1 week ago
@maplewoodsp It really depends on the total hours of on-tme, and the temperature inside the monitor. It's also possible that yours happen to have a slightly better brand of caps.
Maxxarcade 1 week ago
I had a problem with my 226CW in that it was getting dimmer and hard to read. Was hurting my eyes as I couldn't focus on the text very well. Searched for solutions but found only replacement cap videos. I looked at the Win XP properties for the monitor and changed the Samsung profile to default profile and it brightened right up! When I installed the monitor there was no Samsung profile on XP. Perhaps an XP update installed the profile on me?
bamboopavement 1 month ago
@bamboopavement I had a similar issue on my system too. My LG monitor had a custom profile that made everything look like crap. The default Windows profile is much better.
I've noticed that most Samsung monitors I've seen have tended to be on the pink side. On the older ones, the backlight lamps cause some of the pinkness when they start to go bad. Other times, the monitor is just configured wrong from the factory!
Maxxarcade 1 month ago
I have this exact issue with my 226CW. My monitor is to a point now where it won't turn on at all. It started with the monitor screeching while it was plugged in but not turned on. It moved on to strobing for a few minutes after I turned it on. Finally it went on to continuously restarting itself over and over and then strobing before it would stay on. Now it is dead. I'm going to buy a new monitor, but I still want to give this a try. Do you think you could provide a link to the capacitors?
C01DB100D 1 month ago
This has been flagged as spam show
What the skinny rubbery piece beside the three 830ufs? It has no markings. Mine says cc021 in the L101 spot. Is that where the 330uf cap or is it a different type of capacitor or is it a type of fuse? It definitely has different diagram markings then the 830 uf spots.
bigseer 2 months ago
Thanks for the vid but the opening part is also important.
duguder 2 months ago
Replaced caps and used 1000 microfarad instead of 820...seems to work fine :)
lucakiss70 3 months ago
@lucakiss70 Yep, I've used 1000 in place of 820 as well. As long as the physical size fits, there's usually no harm in it.
Maxxarcade 3 months ago
@lucakiss70 The expert I spoke to said there was pretty much a 20% bar of error that was fine as long as it's a filter capacitor, which these must be then. :)
Congratulations on getting your screen working again, I can not express my joy that I fixed something that would cost me $200 to replace with $4 and an hour. :)
fr0ber 3 months ago
This is one poor effort. The most important thing is taking the cover of and actually removing and fitting the new parts. Must think people are fookin phsycic
FIST2k8 3 months ago
This has been flagged as spam show
i have samsung bw 906 i have same problem but,i don not know how to check these capacitors,my circuit board is same as your's,but from outside capacitors looks ok to me,how can i check capistors on circuit board which one is bad or i have to pull capacitors out of circuit board then check please help me for this
thnaks
jhurloo 3 months ago
Thanks for this video, it's really helpful. My monitor is still working, but I think it's in in his final days... thank God I looked for a solution before I called the priest :) Greetings from Hungary!!
LeeGalEyezIt 5 months ago
I have this same exact monitor and it's been flickering for awhile now, but I can't seem to figure out how to get into the damn thing! lol Help?!
I've taken apart and fixed/cleaned just about every other electronic device we've EVER had in our house at one time or another before, since my kids (and husband) are hell on electronics! But this stupid monitor's giving me a hard time even getting into it. Any suggestions?
Redkat78 6 months ago
Hi, I want to know the valuesof capacitor failure. In the movie we see the first two from 820 microfarad 24V, but the other two capacitors neighbors that have value? thanks
Where can I find the wiring diagram if possible?
Thanks for the movie, very useful
MrGMassaro 8 months ago
well my monitor just started flickering for some days now, and with out these videos i would have never known whats wrong with my 226BW. I know nothing about eletronics repair, so hopefully someone local around me and fix my monitor for a decent price, how much do you think it would cost if i were to pay someone to replace bad caps ??
SensiRootsBoy 8 months ago
@SensiRootsBoy The parts cost around $10 or so, and the labor would vary depending on who works on it. It took me a little under an hour, but I have decent soldering/desoldering equipment to speed things up.
Maxxarcade 8 months ago
I've got the 226BW, IDK what the CW has that the BW doesn't, but I've had it since 2007 and it's still going.
fanowner12 10 months ago
I repair monitors (and other gear) and the most monitors coming in are, well... syncmasters with blown caps... Those caps are crappy!
crusiatusblack 10 months ago
@crusiatusblack I know, and they're also used in Samsung's TV's. Even the stuff they make for other brands has those crappy SamWha caps.
Maxxarcade 10 months ago
@Maxxarcade Indeed, however It's good business for me and some people even wanna throw the device in the trash, I tell 'em I'd like to have it. After replacing a few cheap parts for proper ones and I've got an extra device to sell
crusiatusblack 10 months ago
@crusiatusblack I had a 226BW, and guess what? blown caps, and flickering, now it has this nasty brownish red hue @_@ I replaced it with an Acer.
JoeyJoeJoe5000 10 months ago
@JoeyJoeJoe5000 Samsung is crap right? :p
crusiatusblack 10 months ago
@crusiatusblack Yeah they are lol
JoeyJoeJoe5000 10 months ago
@JoeyJoeJoe5000 This one had the red tint too. I've heard that Samsungs tend to do that.
A lot of the flat panels I've worked on were Samsung, or contained Samsung boards. The caps seem to be a major issue with them.
Maxxarcade 10 months ago
How do you decide what caps to keep in stock? Also where do you get yours?
Thanks!!
Djkyle65 1 year ago
@Djkyle65 I work with a lot of stuff, so I have a good idea of what sizes are best to have on hand. I get most of them from Mouser Electronics, but some types that I use in tube circuits come from other places.
Maxxarcade 1 year ago
I kinda think samsung uses those caps on purpose.
their LCDs seem to last just a tad longer than the warranty usually..
i can't tell how many LCDs i've fixed so far.. almost ALL of them only had bad caps. (except an Acer with a shorted bridge rectifier..)
fixed last month:
Samsung: 2233BW, 226BW, 171BM, T220, 940NW, T240, 740N
Acer: X223W, AL2216, AL1916
LG: L1952HQ, W2243T, L1917S
iiyama E2200WS
kinda sad that most people would just throw them away or destroy them on purpose ("for fun") :(
Knaeckebrotsaege 1 year ago
What happens if you cannot get a perfect capacitance match? Let say I need 420 microF and I can only find 470 microF will it still work ?
Dicofole 1 year ago
@Dicofole You can usually go up a bit in capacitance, as long as the physical size will fit.
Maxxarcade 1 year ago 4
@Dicofole As long as you don't jump from 420 uF to something like 600 or 700 uF, you should be OK, as Maxxarcade said.
TheGeek1028 11 months ago
Still have a BenQ LCD that turns itself off right after showing its "energy star" splash screen. I'd so love to check for bad caps, but can't figure out how it opens!
Madness832 1 year ago
Nice and easy fix.
I think United Chemi-Con are one of the best brands out there.
costellom5 1 year ago
Nice fix and useful information too.
AllAmericanFiveRadio 1 year ago
i got the 223bw :) looks the same !
djbazzmaster 1 year ago
i will let you know when mine dies!
XxMEVANSxX 1 year ago
i love the way you fix stuff, you make it look so easy. i cant solder to save my life!
Swi2ler 1 year ago
what do you suggest i do with the dell 18" flat panel monitor i have? it turns on normally for like 10 seconds then shuts off. keeps shutting off. i looked for bulging capacitors and didn't find any.
fordbroncodave 1 year ago
@fordbroncodave Caps don't always bulge when they are bad. Another possibility is that one of the backlight lamps (or its associated inverter circuit) are not working. That can cause the monitor to shut off after a few seconds. Usually the screen will have uneven brightness or be dim when any lamps are out.
If it has an external power supply, that could also be going bad.
Maxxarcade 1 year ago
@Maxxarcade I think that's what happened to my 17 inch flat panel Dell. When you turn it on, it sometimes will stay on for a while, but eventually it will turn off. The bottom part of the display flickers and has a red-ish tint to it. If you turn the brightness down all the way, it will stay on longer. If you turn the brightness all the way up, it shuts off right away.
pcgod8 1 year ago
@pcgod8 Yep, reddish tint usually means backlight issues.
Maxxarcade 1 year ago
AMAZING, i would have just thrown away that monitor..
XxMEVANSxX 1 year ago
@XxMEVANSxX Ya, I hate to think of all the nice big LCD's that get tossed because of a few bad caps. I wish someone would toss a 30" or two so I could grab them :-)
Maxxarcade 1 year ago
@Maxxarcade There are some nice tvs and monitors out there with minor failures that still work and look great when they're healthy. I've fixed a nice 42" (that I'm watching as I type), I'm working on a 37", then I'll be looking for a 26-32" to put in my garage - all hopefully for less than $400 total including parts.
hoopfan71 1 year ago
how do you tell the positive side of the caps?
37474748 1 year ago
@37474748 The caps have a stripe on the negative side, and the positive lead is longer.
As for the board markings, it varies. You usually need to look at how one of the existing caps is installed first. The conventional way is to put a black stripe on the negative, but some companies do it different (or backwards!).
Maxxarcade 1 year ago
@Maxxarcade yeah i need to recap an motherboard so i will run into that issue. is there any positive markings or sutch on caps?
if i remember my school right the Microfarads should be as close as posible but the voltage can be higher of the cap? is that correct? And caps are like led's they only work one way around. And the other way they pop.
37474748 1 year ago
@37474748 Yep, they are polarized, and you can use a higher voltage. Only issue is the physical size must be the same. Sometimes you can use taller ones, but not usually wider. The positive lead usually is unmarked. It is also the longer lead on a new cap.
Maxxarcade 1 year ago
@Maxxarcade how would you go about to diagnose caps on an solid state board? with those smaller caps? As i understand they dont bulge up like the one you showed? how do you know what to swap there?
37474748 1 year ago
@37474748 I use an ESR meter. It's called a Capanalyzer 88A Series II.
Maxxarcade 1 year ago
@Maxxarcade it is any way to put that of with an regular multimeter?
37474748 1 year ago
@37474748 Not really. ESR Meter is necessary for proper in-circuit testing.
Maxxarcade 1 year ago
@Maxxarcade oh i dont have one of those :( im really bad at component repair. i can do some if i see the problem visually but i dont know more really.
to bad there is no one really that does motherboard component low level repairs.
I really like your skills and your channel though. You know your stuff man :)
37474748 1 year ago
@37474748 I actually do motherboard repairs to an extent, just not for other people at the moment :-)
You could see about sending it to badcaps(dot)net if you need caps replaced. They might be able to help you.
Maxxarcade 1 year ago
@37474748 If my memory is correct the gray side is the negative the gray strip on the side of the cap and the other side is the posative.
bangulo2012 1 year ago
@bangulo2012 is the shorter leg on the new ones positive? i kinda get that screwed up allot of the times lol :)
i hope the swap works out. would be fun to get it going as an storage server :D
37474748 1 year ago
I think they should use external power supplies, not necessarily wal warts, but power bricks would be nice.
umajunkcollector 1 year ago
@umajunkcollector A lot of them do, but they still need internal power circuits for the various voltages.
Maxxarcade 1 year ago
What, no flyback? heh heh heh
I was talking with a saleman aobut LCD TVs, he thinks they will last a long time. I told him that the power supplies often are junk, and also those light tubes can go bad sooner than he may think. The LED backlit LCDs may be a lot better.
umajunkcollector 1 year ago
@umajunkcollector The LED ones I've used so far were great. Haven't had to open one up yet, so I can't say what kind of caps are in them. But at least the backlights will never get dim like CCFL's.
CCFL's generally last around 40,000 hours or so. Usually the caps go first. Though I've seen a few laptops with bad CCFL's. They must run hot or something.
Maxxarcade 1 year ago
I get Jap caps too :) they are great
HDXFH 1 year ago
I am always fixing Acer 17"-22" monitors cause of the same problems I always use the really good cap for long life
legogamecreator 1 year ago
That must be a very Common problem with these
HDXFH 1 year ago
Those boards look just like the ones in my Syncmaster 204Bs I fixed. Damn cheap caps!
bandersentv 1 year ago
@bandersentv Ya, gotta love those bad Samwha caps that are in so many monitors and TV's!
Maxxarcade 1 year ago
Thumbs up if your the first viewer!!
haz939 1 year ago
@haz939 learn some English first
kayslaay 1 year ago
@kayslaay To be a spammer, his English wasn't actually that bad.
MechaNintendoMast 1 year ago