Modern Tech Fail : HP w2207h Display Has Capacitor Plague
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- čas přidán 21. 08. 2024
- I just repaired my Mac, and now my PC died! More exactly its HP branded LCD display, model w2207h. It has a bad case of Capacitor Plague. Which gives us a chance to take a detailed look at the inside of a failed Chinesium capcitor (and compare it to a good Japanesium one).
That's why I love your channel so much.
Most would have stopped there, after having replaced the caps. Heck, they probably would have replaced them all blindly and not just the bad ones.
But a curious guy like you just had to go the extra step... Measure it.... Not enough? Cut it open.... Not enough? Unroll it... Not enough? Cut open a good one for comparison.... Not enough? Look at them under the microscope!
You are the man!
Merci. J'ai trouvé ça très intéressant!
The "capacitor plague" is often blamed on bad quality caps, when it can be due to several reasons, including bad design (underrated ripple current, location close to hot compoments) and high run time.
When you can save 3 cents a cap in mass production of course they are going to buy the cheap components. That saved money can buy a lot of hookers and blow.
These are all very good points. Actually in this case probably a combo of all these plus a low quality cap to start with...
You know for sure the engineering department wanted better capps...
Japanese Panasonic FR series are rated for 10,000 hours at 105C so will last many years.
Why dont they just sell each unit for a few cents or even a few $/£ more. The end customer isnt going to notice. Big manufacturers will be buying capacitors in thousands if not millions of quantity so will be able to get them a lot cheaper than someone buying just a few to fix their own monitor.
The thoubs down is from a Capxon sales rep :)
mspysu79 cheap crap capacitors.
Yep!
Marc, thanks for letting us see what is inside an electrolytic capacitor.
You want screws? Be glad that it isn't glued or ultrasonic welded ;)
I have been running my own development company for 30+ years and of the hundreds of PC's I have purchased I only ever had two fail, One power supply and one HDD. Both were easily fixed with readily available and easily replaced parts. Of the 40+ MAC's none lasted more then 18 months and parts could either not be found at all or the repair would have been too involved.Some of the current PC's are over 10 years old and still running.
In my experience the capacitor plague peaked around the year 2000, it got better every year after that. Nearly every socket 370/slot 1 motherboard I've seen has some bad caps, and so do most graphics cards of that era. Even slightly newer P4 era stuff is going to be loads better. But LCD monitors seem to go against the trend, I have a bunch of old 19" Dells and ELOs from ~2002 that are still going strong, while most 1080p ones from less than 10 years ago are toast.
@@Aggrop0p LCD monitors in early 2000s were still premium tech with high prices, so quality components were used by most manufacturers. Since about 2005 they have become much cheaper with razor thin margins for the manufacturers, especially at the low end of course. So iffy components have found their way to about every brand that makes affordable monitors. Low-ESR caps from Japanese manufacturers are significantly more expensive than Chinese discount brand ones when you talk about hundreds of thousands and millions of units.
That said, two years of continuous use is not actually that bad longevity. At 8 hours a day that would be 6 years of use, which is probably more than the expected lifetime of an inexpensive PC monitor in developed countries. In any case those Capxons lasted much longer than the really bad caps during the actual capacitor plague around the year 2000. Yes, they are still plenty bad quality and their spec sheets outright lie about their longevity, but it could be worse... (And it was).
And that’s why I always buy the AppleCare... in my experience, if it survives past the 36mo of AppleCare, it’ll survive to the point where I’m replacing it due to old age anyway...
And I've never seen a PC last even 18 months without at least one serious problem, I've got Macs that are over 30 years old and in perfect condition. (And it's Mac not MAC, unless you're talking about ethernet addressing. The plural is Macs or Macintoshes, Mac's is possessive, as in the Mac's MAC address.)
You guys have had really bad luck with your computers. I have seen both Macs and IBM compatibles running without any hardware problems for years, sometimes even in quite heavy use.
Nice :D Disassemble change a few caps assemble and You are up and running. Still not a Mac though - if it were it would have a cracked screen by now! ;)
You're gonna make some people jealous with that laboratory grade LCR meter.
I was jealous myself until I got one. It’s a gift from another CZcamsr actually. Thank you @Robert Baruch!
I bought an Eizo monitor from around 2007 at a thrift store recently. It is Made in Japan and has only high-quality Nichicon, Nippon Chemi-con, and Panasonic capacitors in it, and everything about it seems extremely high-quality. It is also held together with just a few screws and some very easy to access clips, so it is easy to get into. Looking at the info in the settings, it says it has about 50,000 hours of use on it, and yet it still works perfectly. It appears Eizo still makes their monitors in Japan, and likely still has that same level of quality (although new ones are very expensive), so I guess not all modern electronics have to be made to be crap, it is just some manufacturers choose to do so.
**New** ones are expensive? Wow. Japan-made Eizo monitors were always the bees knees and priced suitably (ie “a small fortune” for most of us). If anything, they are now cheaper. You have to adjust old prices to today’s dollars. I had an Eizo monitor in the 90s and it cost more than the comparable Eizo models cost today, even if numerically it was cheaper. Money’s value is not constant. And on top of it, today’s models are much better monitors as well - wider sync range, more features, digital inputs, better focus when examined with a microscope, etc. They only cost “more” of you compare apples to oranges: modern prices of better products to prices of technically less capable products in old money.
@@absurdengineering I meant that in terms of comparing their prices to used Eizo monitors, as the one I bought used at the thrift store was only $7. Adjusting for inflation, my model was around $2,000 when it was new, and it seems the average price of that model on eBay is still rather high as well, though.
faulknik000 Ah, OK, that makes sense.
My God... Marc you are having a epidemic of failing computers around you these days my friend. LOL. Luckily you are a wonderful doctor to fight this surge of bad quality modern electronics. I know what you say about the quality of the components, we are living in a world that builds cheap electronics everyday. They(manufacturers) wants you as a customer, replace equipments more often. I remember in the 2000s(2000-2002) when all the Pentium 3 motherboards blown by faulty caps. Was a nightmare. Is incredible how you find in a a 2010 monitor still that problem and even on a "good" brand as HP. Thanks for sharing this wonderful videos.
I have had to literally replace hundreds of these same brand caps with low time on them in tv power supply boards. Even when they were not swelled or appearing by visual inspection to be bad or dying. There are two known brands that I've had this issue with and only replace them with high quality caps. The small extra expenses when repairing is worth it. Happy customer= happy wallet
When I worked for Dell, we were told that a Taiwanese co stole the recipe for these caps... To save money. But the recipe was missing the component that prevents dry outs and bulging caps... Dell is still replacing a few motherboards... Great video. And, yea, as some previous comments this is more informative. Also, people have to remember polarity.
Just like Dave from EEVBlog says: "That cap is dry as a dead dingo's donger" :D
Well Bob's my uncle, he was also in like Flynn.
No, Dave would say it's _dryer_ than a dead dingo's donger.
5:54 CrapXon brand. Not surprising. They are the absolute cheapest worst quality caps of all. I replace CrapXon caps on sight even when not bulging because they guaranteed to fail in a short time. I use high quality Panasonic FR series caps.
Yepp, they are called CrapXon for a reason... I've replaced so many of them already, all in Samsung LCD monitors. xD
If you think Capxon are bad you should see the ChengX ones!
Ive replaced chengx, chongx, chang and similar too before. Fukyuu brand caps are bad too.
In our part of the world we do not have panasonic we have only capxon, samwha, sometimes ... nippon (cheng* is out of the question) and capxon is not the cheapest of those three.
Other good quality Japanese caps are RubyCon, Sanyo, Nippon KY series, Nichicon, Hitachi. Samwha are ok i think. You can buy Panasonic caps on Farnell Element14. They have a regional version of the website for most countries. Definitely in US, most EU countries and AUS at least.
I had my HP w2207 monitor 11 years before I had to repair the CFL connector. I used it every day, 8 or more hours a day. Now I call that reliable!. Now I am using it for my security cameras monitor.
I picked up one of those on the side of the road once. same issue. Never got it fixed, found it in the garage a year after I picked it up and my brother had accidentally cracked it whilst moving it and didn't tell me. Lovely.
I have a Dell TV from around 2003 on the 'bench' of sorts right now and it has the infamous inverter cap plague problem, plus a couple on the driver board that need replaced. mix of CrapXons and Cheapo Teapos everywhere. Couple Lelons that all test great, though. best of the cheapies, no wonder Radioshack stocked them near the end of their life.
Aaaah, the "famous" CrapXon capacitors. I already had my fair deal of problems with them.
But thanks to the capacitor plague, I can get cheap, broken electronics on eBay. :)
Performed this exact same operation on HP monitors. Thanks for the detailed cap failure analysis. Interesting!
Thanks. Very good video. Sometimes, it is not as easy as replacing bulged capacitors. A shorted capacitor can blow up transistors!
Very true. Plus it was a "visible" fault. I wish it were always that easy...
Very nice video explanation. I replace two 1000uf 10V capacitors to restore my monitor to normal. The caps are usually rated for 1000 hrs. For a few cents more you can buy caps with a 8000 hr. rating.
Just found this as video mentioned in the Samsung laser printer fix, I thought I recognize that monitor, you don't see them often. Mine has 20000h and not had to open,
though it's a bit dim so I think that job is pending. Good tips here and in comments.
I've found the older physically larger caps seem to fail slowly over decades while the 'modern' ones tend to just fail all of a sudden. Most likely the older large caps just had more electrolyte and a larger surface area to dissipate the heat once the ESR started to rise. Older larger caps smoldered away while the small modern caps just go up like a firecracker, sometimes literally.
Capacitor plague was still happening in 2010??!? I had it happen to a pc I built in 2000 and then had to recap ~2003! I remember reading even back then that the problem (sloppy industrial espionage) was widely identified. Is this a second wave of plague?
Yeah that kinda surprises me also. I had heard this was over by 2008. But these crappy green and gold caps look just the same as the ones I've had to change many times. I hope it was that "HP" was using new old stock instead of them still being manufactured.
Doubt it, just bad design and cost cutting.
well... do you seriously think they destroyed all the crap-caps that had already been manufactured but not yet assembled into products? Hell no, for sure they marinated on shelves for a few years and then ended up getting used somewhere anyway.
I had to replace the caps in a Cisco Catalyst 2950; a lot of them bulged and leaked on the power supply side. The old caps were green Sanyo ones. Makes you wonder about how many electrical items are thrown out in the rubbish due to cost saving during manufacturing.
If you are sort of giving the thumbs down to the " Capxon" brand, what is a more reliable brand? 🤔 Great video! 🤓 Thank you
Excellent video, very informative. The microscope shots at the end were a nice touch. Thanks! :)
25 years ago, that what I would say about the first HP PCs. Don't buy 'em.
Good info on capacitors. Since they make stuff nowadays with a very specific service life built in, anything you can do to extend the life of equipment is a godsend.
Electrolytics have been failing since I started in 1976. Very unfortunate that this far worse plague happened. Had one blow up in a tube TV and bust the audio output tube.
I have an old Samsung multistandard LCD monitor (which even has a SCART port) which I picked up for very cheap about six or seven years ago...all it needed was new capacitors and it is still going. It serves as a monitor for my media center.
I always keep one or two PC monitors in stock, so when this happens I can just swap it out and do the repair later. Not a huge investment, I usually purchase them in fleamarkets, for 5 or 10 euros.
Now i need to find me one of these mythical flea markets.
My gosh you taking that front cover off made me hurt on the inside but hey it worked! 😀
Never managed to ever figure out how to get a screw-less panel open, might give it a try sometime in the future after seeing this
Use a thick guitar pick and go around unseating the clips one by one. With practice you can do it without ever leaving a mark on the plastic. Never use screwdrivers or anything metal. Oh, and you go in from the outside edge, not the front where the screen is, unless you really want to crack the screen.
I had some powerline plugs that stopped working when I gave them to a friend, at the time there where quite expensive. I opened both of them up and found that the main dc cap on the secondary side of the power supply was badly bulged. I replace them with what ever I could find same voltage and capacitance of course. I have been using them for nearly 5 years after fixing them. I sometimes think manufacturers do this on purpose as a planned obsolescence so you will buy the newer model.
R U a cynic
We fix these monitors all the time at work! We use them for video editing workstations, and while it is not cost effective to fix them over buying new, it is LESS hassle and paperwork to purchase the caps, fix the monitor and place them back into service, over trying to get the capital budget to replace with a new monitor!
I had exactly the same issue with a Samsung 22" monitor from the same era, although it was much easier to take apart and repair with Japanese caps recommended online. I don't actually remember why I threw that one out in the end. After the capacitor investigation I can recommend Big Clive's videos, they should fuel your curiosity with similar experiments. Oh, great to see an old Laserjet in the opening section of the video, good old bulletproof HP.
You probably threw it out because now is the time for CCFL to fail, it's been a good 10 years.
I had done a complete recap of my dad's 20" from the era a few months back; now it came back, caps still good, failing to strike the CCFL and turning off after a few seconds. Switching around the CCFL, it was obvious that one of them was simply dead, and when i pulled it apart, it was blackened 1cm deep on one end. I had a CCFL to LED retrofit kit for $4 stashed just in case, and put it to use, so it's a LED LCD now :D The kit was super shady BTW, had to replace numerous LEDs, and i'm sure it's not the last i hear of its issues :D
I suspect that HP never bothered to do any testing on these caps before using them. The design engineers specd a cap of a certain value and purchasing bought the cheapest one they could find.
I was once asked to test a cheap SLA battery for an electronics manufacturer I worked for. After a couple of weeks of going rounds with engineering and marketing I gave up. I could not even get a power usage profile of the equipment it was going in, temp ranges, etc. There was nothing to test. Marketing actually said 'Is it a battery? Is it 12V?' It was cheap and that was all that mattered.
Great reminder of the Great Plague still affecting us
I had exactly this model and the same problem! Recapping - working again!
Congrats on your repair. Glad I could be of some use!
yeah, water in stuff is bad because it tends to react. Low ESR Capacitors have Water in it...
That's why there are anhydrogeneous capacitors (Su'scon has some in their catalogue).
The Nippon Chemicon SME are norma General Purpose Caps, not a good idea in switch mode PSU that come with (very) low ESR Capaitors like CapXon GF...
Capacitance in modern electronics isn't that important, you have very high tolerances, ESR or Impedance is more important for some circuits...
Hahaha Capxon strikes again! Love your 4262A
We use to blow capacitors by turning up the voltage for testing.
There's a "notices bulge/OwO what's this" meme to be made somewhere here. Especially what with the white schmoo that leaked out everywhere.
That's not leakage that's just the silicone caulk they use to help dampen vibration/keep stress off the mechanical connection for "larger" board mounted caps. Actual leaky caps look like disgusting brown goo more similar to a dark caramel color.
Would change every cap on the secondary side anyway, once one is bad the others are going to fail shortly, plus also small capacitors on primary side, as that often also goes high ESR and the power supply does not start up when cold.
I've had mine for years and it still works, I guess that's a miracle
me too, and mine still works, besides some of the buttons on the monitor but everything else is good
i replace more cap's in LCD screens than any other consumer devices..
Lol CapXon. Surprised they lasted that long. ;)
Actually it not the cap crap , is the engineer who designer this board , they just calculated enough requirements power/ capacitor for this monitor ,They not thinking about long hours use will heatup and demand more power, that's way cap will work harder and blow out, always replace with bigger voluem uf from original cap.
Thanks for your video and info! I guess it's not worth it but intend to repair mine too. For now however I manage to get it lit back up several times a day after a few minutes warmup with a heat gun blowing hot air into the vents, no problem lol. It was actually rebranded as a refurb Famousmaker monitor with a world atlas longitude/latitude icon sticker covering the hp logo at the bottom middle. Maybe they knew the components were cheap so HP rebranded it and sold it to suckers like me.
CRapXon strikes again! Most CapXon caps I've seen, literally, have been bulged or leaking.
good cap bad cap
i just took my HP w2207h monitor apart and found all 6 caps were bulged, but mine were Su'scon caps not Capxon caps, weird!
My understanding was that the 'cap plague' was caused by someone (Nichicon?) allowing a faulty electrolyte recipe to be 'stolen'... if so, then it was a brilliant example of reverse industrial espionage.
Two times I know of that Nichicon itself had bad runs of electrolytic capacitors. In the 1960s and in the 1980-90s with a turquoise plastic covering.
Oh man I never would have guessed that a brand like HP would use CrapXon too... They are known for manufacturing bad caps for years now.
If your imac is still unexpected power off, check your rear housing because in there is the plug of the power cord wich goes to the power suply and it has a fuse witch brake power when its shorten
Only HP stuff I'd ever buy comes from their prosumer/business segment. Their consumer crap is beyond horrible. Unfortunately this applies to many brands. :/ Stay away from the consumer stuff if you want it to last
Capxon... Is still here?
I don't even remember how many failed capxon capacitor i had to replace in motherboards, tv, etc...
I got distracted by your collection of Selectric typeballs!
Oh these are awesome. You get to see me try all of them in this video here: czcams.com/video/vOIPN70f_-I/video.html
I have Asus FullHD monitor from 2010, hopefully it has higher quality caps. No problems so far but it's not been very much used, especially in last few years.
3:54 The unlatch tab is blocked by the shielding once its plugged in. What a effing stupid design. Thats ridiculous but not surprising from HP.
Marc, love all your videos. I'd watch you disassemble a Mr. Potato Head. Thanks for uploading!
I just threw mine away, after being stuck staring at it for months. Now I find this video. Figures.
I have recapped a monitor last year because it often turned off by itself, when I turned it on again it worked fine until the trick didnt work anymore. So after a recap. everything worked well but a year later the problem slowly comes back. any idea?
The way it was recently explained to me in the difference between 1950s capacitors and modern capacitors is in the way the materials are formed. Instead of large pieces of flat foil wrapped in the large older capacitors, now the foil is ribbed to give it more surface area.
Unfortunately it cannot withstand the heat.
Stay away from a certain distributor which is manufacturing new large can capacitors on the old Sprague equipment. The claim to make the cases smaller since the technology has "advanced".
I should have waited until you explained it... .haha... However more surface area to make the smaller is no substitute for real "girth" ;)
i once made a monitor live again for awhile i think it was a westinghouse brand or something had the capacitor plauge i replaced the crap ones with caps made by panasonic i believe it was and that monitor lived for awhile before it had problems again and i couldnt see why though i lacked tools to test the other caps as while it may look good it can still be bad
Made as cheap as possible and actually designed to fail in my opinion... if these things lasted longer, they couldn't sell you a new one every few years... I've brought a Hanns-G monitor back to life by switching out the capacitors on the power supply board and I'm not even very good at soldering... ;)
I watched this video on a monitor that I had repaired bulged caps on
Same here! :D It's also an HP. LA2405wg.
well i have the same monitor... i better be ready.. thanks Marc!
My screen is gray now after putting everything back together, any idea?
I'm curious what kind of capacitance and ESR readings you might get if you tried rolling the good cap back together!
Also, if you like the monitor then it's worth fixing it. :-)
Nice LaserJet 6P (or MP? impossible to tell from this distance) there... I used to have one as my main black and white printer, untli my inkjet, which I used for color prints only, died. Then I got a Color LaserJet and had to get rid of the 6P, which was still in excellent condition after more than 15 years. Nice printer, just a bit slow by todays standards.
Good eye! It’s a 6MP (the post script version). 22 years old, never skipped a beat, and even recognizes Appletalk for my classic macs. Feels completely modern when you use it, has not aged a bit.
Mine didn't have the PostScript interpreter, and I only used the parallel port (plus IR because my old notebook used to have an IRDA port, long before WiFi was common). But it worked flawlessly, except for one time when the toner cartridge had become so old (before being empty) that the rubber thing that wipes the drum clean with every revolution had crumbled away. I had prints with a "fading echo" every ~ 10 centimeters. Replacing the toner cartridge fixed it. I miss that machine a bit, even though I am happy with my current printer. I should have kept it, but in my tiny apartment you can't keep everything. :(
Owning the same (well, apart from the PostScript function) printer for so many years i immediately recognized it. You don't see them too often any more.
That's why I use a power strip with mains real switch to power down things over night.
Perfect timing! I check CZcams and you just posted video five minutes ago haha
What an interesting video, so happy to have watched it; thank you. I had been using (2) of these monitors for photo editing for a number of years. One can no longer bring its brightness up high enough to achieve a homogeneous color calibration required for editing. Is it fair to assume that it (or likely both) could benefit from a cap refresh? In the meantime, I have ordered (2) new monitors but have a lingering resentment discarding electronics, particularly if there is such a potentially straight forward resolution. Appreciate your input.
Hi, did you ever refresh the caps on said monitor?
@@jax6575 regrettably not, I passed them along and went new.
If this is anything like the original HP w2207, I hate that the USB ports either require a separate power source via a USB ln or it uses this connection to send memory stick data from the left-sided USB ports to your computer but can't seem to use that connection to allow you to get rid of the VGA cord. Am I doing this wrong?
Back when these monitors were made there was no USB connection that could transfer full bandwidth video data for general use in a monitor. You can get digital video over USB-C only because it was meant to do it and has the requisite bandwidth. Back in the times of USB 2 you could leave usable bandwidth for other functions while transferring say a VGA image, so nobody bothered with that, and there was no support anywhere to transfer that data from the graphics card to the USB host plug. These days a graphics card can dump its output onto PCI bus lanes and the motherboard chipset will route those data packets to the USB-C connector, mixed with other USB data, and the monitor can then receive those and use them to form a display. It’s possible to do this for low resolutions with USB 2 but you’d need a totally custom solution for it - no chipsets from that era, graphical or otherwise - supported it.
Capxon should be run out of business and prevented from manufacturing anything. I also have lots of 30+ year old equipment with their original capacitors all in excellent condition. Starting with my 1975 Minimoog D music synthesizer with its Nichicon and Matsushita caps still showing lower ESR than some brand new mid quality level ones !
I have a w2207 (no h), it started acting up on suspend, losing settings and backlight hours count.
I am wondering if there is some lithium battery of some sort in the electronics board.
I would suspect you are correct, there must be a coin cell battery on the digital board. I did not take it off though, so I can't be sure, but it sure sounds like a low battery is what is happening.
The classic one. Happened to me so many times.
Wait I’m using this right now with my iPad, should I stop?? Help
Thank you. Türkiye' den selam. 😊
Hello mine gave off smoke after screen turned black. Does that mean it's ruined or are there safety to prevent damage?
Can’t say until you actually look inside and see what smoked. These things generally don’t burn like a forest would where a little spark sets the whole thing ablaze. You’ll likely find that only one component has failed and smoked. There may be superficial smoke damage on other components - but it is expected to be superficial only. Get a swab with acetone and it should clean off easily.
Good video. But need help on different problem with 2207. Filter caps appear OK, but small discs (c526, c524) near wire connectors and xfmr (T501/502) in corners got fried. Readable disc next to it labelled "N3 3kv sec" --3kv? maybe that is why board has cut outs-- to insulate? So do I replace small disks (what value?) or is the trouble off board, and they will only fry again? On start up screen showed good image, then flickered went dark and smoked--3 or 4 seconds. Discs dark, split, board singed just a bit. Have good DVM, no schematic. Could buy board but afraid that may not fix it. Don't know if I can test screen for short with DVM. And why would caps blow? Thanks for any help.
They failed randomly - there is nothing in this circuit that could actually damage them. You have to replace them and if they “fry” again then the replacement parts were bogus. Only buy from legit places like DigiKey, Mouser, Newark, etc. - eBay and AliExpress are off-limits for such parts unless you got the tools and the know-how to qualify them (ie. to ensure you haven’t been had, mostly).
These capacitors are common in monitor backlight circuits. SEC is a Taiwanese brand - Success Electronics Co. Anyway, you’re looking for a 3pF 3kV NP0 ceramic capacitor. It is in series with the backlight and its value is important. +/-20% would be OK but the lower the value the dimmer the backlight. You can buy a dozen or two and hand-grade them ie. measure their value and choose something that’s say a bit above 3pF so that you compensate for the aging of the backlight. I’d put 4pF in and enjoy what life is left in it.
CFL and EL backlights age poorly so those monitors have their life limited by that backlight mostly. You can only extend the useful life of your monitor to decades if you replace the CFL backlight with a LED backlight. The CFLs won’t be available much longer due to environmental concerns, and also because they are custom made for each panel’s vendor and there’s no point in making them if the panel is not manufactured anymore.
Behold the capxon dissolving electrodes technology!
where is the hard drive on this computer?
What kind of workbench is that at the start of the video?
13:30 It's got what plants crave!
I disassembled my HP 2159m monitor, but I see that none of the caps have any bulging or leaking. Can someone tell me if I should just replace them? The monitor is several years old and my PC (windows) is always on, but is put into sleep mode during the night. The problem with it is washed out colors. Could the caps be old and maybe of poor quality to begin with, even if they look good on the outside? Any help is appreciated.
If it’s an LCD monitor then capacitors won’t cause washed out colors - not if you’re connected over HDMI or DVI. With VGA there may be something funky going on in the ADC front-end - maybe, a long shot. Normally it’s a materials issue in the screen itself - the screen color filter age and lose contrast and the backlight ages too and it’s basically an old life thing. The fix is to get a new one, and you’ll be delighted with how crisp the modern LCD monitors are!
Nice lab!
Looks like they get hot, thanks for the autopsy report! I've changed more then a few of those. They really don't tolerate the heat inside lcd displays but it's really worse then just that. Anyone remember those cute little Cyberhome DVD players that sold for about $40 in the mid 2000's? I knew at least 3 people who bought those and I have one also. They were all dead within 4 years from power supply failure. One by one they were given to me for parts but they just sit there now.
Has anyone had them short and take out other components? I haven't seen it yet but... The one good thing about them is when decent equipment from that era rains down from the sky and ends up working well for you after a cheap fix.
Good thing is if they short, since they're across the power rails, the voltage on other components drops, the SMPS controller detects over current/under voltage and turns off the power supply, or the fuse blows. If that doesn't happen, the transformer would be cause for concern for overheating and insulation failure.
Do you run a computer museum or is your home one big man cave?
no wonder why they failed. they were capxon brand.
where can I get those caps from? and what should I ask for?
This is from Digikey. Try a good Japanese brand like Nichicon.
the pc just tried to out-live the mac to show who's boss
one of online repair techs says HP stands for HasProblems : )
You might want to look into a Intel nuc since they are nice and small
Ahh, the nice "CrapXon" capacitors :D
This dose seem to be the case 90% of the time theses days lol
Good CAP bad CAP, too soon ? :)
2:50 "Why can't people use screws anymore?" Ha, you think this was built by people? That's funny.
They don't use screws because the children that assemble them aren't old enough to use screwdrivers!
As if the Chinese care about that.
4:15 am I the only one who cringed when he ripped it open like that?
I am always very very careful not to do that.
I cringe too.
Then I do it anyway :)
Oh no. Macs are VERY reliable... Until they break, 'cause your wallet breaks with them.
Video craps out with YT error after about 30 seconds. Verified on other connections.
It plays fine for me.
It plays fine for me.