This Broke One Week out of Warranty… Can I Fix it for Cheap?

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Plouffe's old Asus VG27AQ monitor broke after three years of service, just out of warranty. We're not sure WHY it's power cycling, but a new mainboard is inexpensive enough and we're comfortable tinkering with electronics… what's the worst that could happen?

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MUSIC CREDIT
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Intro: Laszlo – Supernova
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Outro: Approaching Nirvana – Sugar High
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Intro animation by MBarek Abdelwassaa
Monitor And Keyboard by vadimmihalkevich / CC BY 4.0  
Mechanical RGB Keyboard by BigBrotherECE / CC BY 4.0
Mouse Gamer free Model By Oscar Creativo / CC BY 4.0

CHAPTERS
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0:00 Intro
0:57 It's Dead, Jim
2:30 Replacement parts
4:00 Teardown
6:35 Replacing Parts
9:00 Uh Oh
11:45 Try Again
13:30 Conclusion
15:48 Outro

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57 Comments

Alan Garcia

I wonder how many products break right out of the warranty

    Free vbucks

    A LOT

    Omabat

    inconvenience

    Lautaro Quiroga

    Probably a lot, considering warranty are an “estimate” for the product’s life.

    GlossyFPV

    Gotta love that planned obsolescence

    CheeseTheFish

    alot, my 32″ 1440p monitor broke a week after warranty, i had to then shell another £350 on a replacement, so annoying lol

Jawbreaker SD

The irony of “what’s the worst that could happen” being said literally as Linus is in the process of smacking the screen with a screwdrivers is not lost on me

    SpoopyAngie

    Can’t really make this shid up lmao

    Leon

    Then the nonchalant “tell me what happened”.

    “You stabbed the poor monitor with your damned screwdriver, that’s what happened! Oh, and the screen went _ploof_ a while ago after a week of functioning in terminally ill mode.”

    Fyn Kozari

    Asus is under a lot of fire lately. Both literally and metaphorically.

    graphicsgod

    As soon as I hear that, I hear Han Solo say in my head, “I got a bad feeling about this..”

mustfa1980

Linus Drop Tips went 28 seconds without dropping a thing, new world record

    RisingJeff

    ​@Noob gamer thanks Einstein

    Dat dragon from mortal kombat.

    @Noob gamer It’s the end of you, send your last wishes to your family, for now thou shall never be seen again.

    ALEXANDER1318

    The way he managed it, you could get away with calling it “Linus Toss Tips”. That way you’d even keep the LTT.

    Crazy Joe Shorts

    He put all his points in luck, charisma and intelligence, none in dexterity.

    FoxyAR

    @Dat dragon from mortal kombat. what did they say?

IRMacGuyver

The thing about replacing parts one at a time is that sometimes more than one part is bad. Especially troubling is when you replace the first broken part but the other broken part shorts in a way that breaks the new part.

    ReetinEntertainment

    My friend had a bad power supply that kept taking out his Hard Drive. They thought they hard drive was bad so they replaced it, which the power supply then took out the new hard drive as well.

    tyler hickling

    My thought exactly. You got all the new stuff, just put in all the new stuff.

    arkie87

    you can replace parts cumulatively until you get it working, then remove the first items you replaced to see if they were indeed broken.

    dragon1130

    I had that happen to a processor once. I replaced the cpu, but the psu was also bad and shorted out the new one so I had to get a new cpu (thankfully Amazon replaced it no questions asked) and a new psu. On the plus side, it introduced me to the joys of modular power units.

Théophile Forestier

Replacing parts is rarely the worst part of a repair but the diagnostic can take a while and be a bit (or very) infuriating

Thrax

Would be good to have a follow up video trying to fix the board at a component level. Many comments here suggesting to try changing capacitors although I reckon it could be a different component such as a power management IC or mosfet that has gone bad.

    MJ

    Came to say this! Far more interesting than a board swap.

KaletheQuick

Actually Linus brings up a good point. Would it be possible to get a rundown of power efficient, low refresh monitors for text monitoring?
E-ink isn’t there yet, but something else that sips power would be really cool!

    Ko01

    literally check the cheapest shittiest monitor on your fav etailer or even second hand and that one, i have a 150€ 2017 aoc monitor that i daily drive until i can get a better one and this consumes less than many laptops, looks ok enough it’s IPS at least and of course only 60hz 1080p (you can force an up to 75Hz output without problems tho). Only HDR and highr refresh rate monitors consume a lot, the bare minimum 60hz 1080p 20-25′ monitors we have nowadays are all sub 45W

T83R

Linus has come a long way from dropping items we can all say he’s improved drastically. Good Job Linus💪

ukPep

With regard to the bracket with the vesa mount holes being taped on, I would imagine that the plastic back is, ultimately, what’s keeping it in place. The tape will just be holding it there until assembled.

    anotherfatgeek

    Also, the screws through the back provide fixture for the bracket that’s taped on.

    MotoBian

    ^ This. Also, the back part is what holds up the front panel assembly, so it doesn’t matter if that internal bracket is just taped on the panel.

Sigh-Fi

Would have been cool if they tried troubleshooting the old board for the individual component that failed. I know it would be a ballache, but mainboards for old devices can be impossible to find. But using replacement components can (sometimes) be an easier and cheaper solution if you have the right equipment.

ℚ𝕦𝕒𝕔𝕜𓅭

One cool thing about Australian Consumer Law is that warranties are separate from Consumer Guarantees, which companies must abide by. An $800 monitor that breaks just out of warranty would still be covered by consumer protections, so you just need to get in touch with the store you bought it from and they will arrange a repair, a replacement, or a refund. If they’re refusing to do so, you can contact the Ombudsman who can force compliance.

    Hezzadude12

    I 100% agree with this take, but you are somewhat forgetting that companies often try to skirt around the ACL. Contacting the Ombudsman is helpful, but depending on how fast you need it fixed, it can be an unreasonably long wait time. Just from anecdotal experience, I’ve had companies like Umart quite literally replace my RAM in store in under 5 minutes, and yet I’ve also had other companies (who I won’t name) make me wait an entire WEEK for a replacement 5950X that didn’t even post. It would have taken them 5 minutes to diagnose that it was faulty and yet I waited an entire week… Sure, they ‘complied’ quite loosely with their requirements, but I’d argue that it was not a reasonable time given the scope of the problem. I’ve also had companies just flat out refuse repairs or replacements even though it is clearly faulty, and clearly within the warranty period (lol Apple).

    But I do agree with what you’re saying – it’s more just the practical reality of what the retailers and companies do over here since the ACCC don’t go after them for warranty related stuff.

    Alby Shinyfield

    theyre always botth the same though

    Paul L

    Well we live in America here where even in warranty, companies will use the dumbest, most pathetic reasons not to fix our replace a product and everyone is too poor to afford lawyers to fight back

    Thermal Ions

    Even before the ACL came into force though, many reputable companies would still cover you if something died just after going out of warranty, if you approached them in a respectful manner.

    Ben Holroyd

    You would hope that any reasonable company would stand by their product days after the warranty expires anyway. It would have been helpful if they has contacted Asus to see if they would honour the warranty still.

makker

Engineers are becoming more and more precise with when the product fails immediately after the warranty expires. Truly a technological marvel.

    Vic Vector

    No kidding 😅

    Nicolas Ritondale

    And I have the same monitor 😮

    Bigdog1787

    Ya that engineer needs to be fired who designs a monitor that’s just taped on especially where it’s vesa mounted on.🫣

    robmanueb.

    Any manufacturer/retailer that doesn’t honor a warranty one week after it expires should be ashamed.

Gyula Masa

Just some remarks:
– The small PCB is NOT the power supply for the LVDS board, but for the panel back light.
– Therefore the power supply is on the main board
– This monitor uses an external power brick, so the supply is not the mains, but about 19..24V.
– For the VESA mount to work correctly, you dont need to fix the metal box inside. The weight of the monitor is hold by the plastic housing. The box just behaves like captive nut.
– If you are not afraid to grab a soldering iron, I recommend to replace all biggest electrolitic capacitors on the main board. I have the suspition, that it will solve the problem for less than 10 CAD.
– I repared a lot of the early Samsung monitors that were prone to the dried out electrolitics. a set of those Elcos was about 6 EUR.

    MyszkoServe

    He needs to replace the capacitor on the LED driver, its ESR increased and it shorts the circuit (its a very sensitive circuit) so the monitor backlight driver shuts it down. This will fix it

Byczke

With your platform it’s an awesome move to push more “fix-it-yourself” content, build that sustainable mindset, and also one thing that I liked is the fact that you said that you can’t break something that is already broken. My brother with that advice got me to fixing my own stuff, keep that content coming.

    Not The CIA

    I’ve done this for ages. When something breaks, I have no concerns about digging in, seeing what’s inside, and potentially fixing it.

    Ben Holroyd

    @Not The CIA I just like digging in. If I manage to fix it that’s a bonus.

    People are far too ready to throw things away though.

    Professor_Skilla

    Love all your comment and all the replys …….fam its broken…… is it gonna get more dead

Josh Neilson

This is proof that diy can be challenging at times, but when you finally get it right it feels great!

Alfa Tech

When you replaced the board for the first time, you may have accidentally shorted the circuit to the ground by placing it on the metal back side of the screen. This caused the power adapter to go into protection mode and disable the power output. Another thing to note is that the plastic case at the back is responsible for holding the metal case in place, which is why there are no screws.

Ray of Light 62

The dual complementary MOSFET driving the backlit is the part you needed to replace. It looks like a chip with either six or eight pins.
The designer make it working at 80 °C; if one places a 4 °C/W heatsink on it, it will no longer fail and the next piece in line to fail is the main rectifier capacitors.
Thanks for the video…
Anthony

    Máté Szűcs

    Any specific source? What you call dual complementary MOSFET is a real thing, but a dcdc converter will use a dual N FET, not a complementary pair…
    Also at 3:46 you can see the backlight driver board and it has one switching fet or LDO and 2 caps and an integrated chip with the FETs and pmic in one single ic.

Lawrence Job

3:03 I’m 99.999% sure the other board would work. Most of the subtle model name things are geographic changes or case changes (adjustable stand); they’re usually the same inside (possibly binned differently)

Anth

I think the engineering involved in making products work until just after the warranty runs out should be a story within itself.

Connor Nolan

That “spend 3 hours troubleshooting cables” thing is so real. I helped a buddy build a PC a few years back, and it didn’t boot. Half an hour later, I figured out that the power button in his case was busted

    David Cassidy

    Only took half an hour? You’re some kind of troubleshooting speed-runner 😂

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