How to fix Asus VG278 white screen

[@RoshGG]

Jeff, the fuse blown up was an 0603 smd ? thx for your help

[@jeffescortlx]

I didn't measure but that sounds about right.

[@RoshGG]

@@jeffescortlx we fix it !!! Thank you so much for making this video. You are a true hero. I can't afford buying a new one in my country, it's to expensive, so we risk it and it works.

[@jeffescortlx]

@@RoshGG This is exactly why I take the time to make these videos. Makes me very happy to hear someone was able to fix one and put it back into use!

[@romano8036]

@@jeffescortlx I got one on ebay, however, I don't think I'll ever gonna use 100 pieces that I bought lol. Thank you again, I am very appreciate your help.

[@_BELMONT_]

got a link to the fuses you used? thanks

[@kirbyyasha]

I am envious of your ability to find and repair faults like this, with what appears to be no repair schematics. I aspire to learn to do this with my own stuff.

[@jeffescortlx]

I've just gotten so use to never having access to schedmatics I've formed trouble shooting habits to work around that to figure stuff out. Chasing down shorts is pretty straight forward. Other repairs are more difficult.

[@kirbyyasha]

@@jeffescortlx I think watching videos like yours helps, because if I was presented that issue, I'd be lost. Checking for a short would not have come to me. I do it as a hobbyist thing, fixing old computers, so I got a long way to go.

[@nbrowser]

No bullshit...no 20 minutes explaining the issue...just a quick "This is what happens...this is the fix" in short order...Jeff, keep up the good work!

[@jeffescortlx]

Thank you. I appreciate videos that are straight to the point with minimal fluff. So that's how I make them. I typically take out mid-roll ads too.

[@ericknutson5558]

Chalk another white screen fix courtesy of Jeff's video. Fuse was blown and Q308 was shorted Gate to Source. Replaced both components and the monitor is back to life! Much appreciated.

[@jeffescortlx]

Awesome!

[@KyoHeiSuminoe]

@@jeffescortlx bro same problem on my monitor VG258QR white screen and then turn off white screen again then turn off can tech fix this? same issue with this video

[@jeffescortlx]

@@KyoHeiSuminoe it could be a similar design. It's worth a try.

[@KyoHeiSuminoe]

@@jeffescortlx yes here the link uploaded to yt kzbin.info/www/bejne/ZqDXkKqqoqiqocU

[@wtfiswiththosehandles]

I am pretty good with a soldering iron, but the tiny SMD always give me trouble. Especially desoldering is tricky for me. Watching your videos motivates me to practice more :)

[@rkan2]

Flux and hot air!

[@michaelcasella4774]

If Luis rossmann and Bob Ross had a baby it would be Jeff.

[@rickchowsr2532]

😂

[@hoyschelsilversteinberg4521]

This literally just happened to my monitor of the exact same make/model. I'll be taking mine apart and diagnosing just as you did here. Thank you so much for this video. I just subscribed!

[@hoyschelsilversteinberg4521]

Yep removed that mosfet and the short is gone. Fuse also blown. Ordered both parts from Ebay just now for $15.

[@refotografia]

Picked a HP w19b from the trash, also showing same white screen which led me to this video. I went looking for a fuse around the same area of the t-con board and found a burned one too. There was no short to ground and I could not find any other problematic components in that board. I didn't have another fuse to try, so I did a solder bridge and got image on it. Put it back together early this morning and spent last hour and a half using it, so far so good.

[@l_sander_l]

The day i got my IPC-7711 training at work, my screen has this issue. what are the chances... i guess i can put my soldering skills to the test

[@MonkeyDLuffy-cm4fm]

This video reminds me of cooking videos. You are ready to cook and you know 1005 you will follow every step then realise you don't have half of the ingredients lol.

[@JimboJet737]

Brilliant. Concise, no bullsh1t and no lengthy introduction. This is how to do tutorial videos. Thank you, will attempt this when I get the time and will let you know how I get on. Are there any old electronic items that I am likely to find the same transistor/fuse that I can rob? Perhaps from an old motherboard or laptop?

[@jeffescortlx]

You can try to scavenge the components, but there are hundreds or maybe even thousands different variations of transistors/fets.

[@zx8401ztv]

Well done :-D, A handy monitor saved from the dumpster of dooooom :-D Because so many fail, it makes me wonder if they selected an under rated mosfet on purpose. I would be trying to bodge a much bigger mosfet in there or near. I never liked the idea that transistors are supposed to be boiling, it's not a tube or valve. Don't forget to get the cat to do a final inspection :-D

[@jeffescortlx]

I agree, the engineer may have under sized the part or the purchasing department saved a buck on counterfeit parts. The cats are on time out from my office for misbehaving lol. Now they just sit at the door and meow.

[@zx8401ztv]

@@jeffescortlx Yep cats are like that lol, they will try to make you feel bad and wear you down. ' Please let me in, i won't do it again, i need to see yoooooo. ' They would have been good at tourturing criminals, the criminal would not stand a chance. Cats think they are missing something, shallow furballs lol. But we still love the little gits ha ha :-D

[@FixedUntilBroken]

your skills with monitors and tv's amazes me. You make them look easy... its not easy lol

[@jeffescortlx]

Keep in mind the magic of video editing. 😁 It can make a one day repair turn into a 7 minute video.

[@FixedUntilBroken]

@@jeffescortlx my success rate is very low with screens.

[@jeffescortlx]

@@FixedUntilBroken My luck is just as hit and miss. But the miss's don't turn into videos.

[@rkan2]

@@jeffescortlx You should upload the misses too! People might have tips too, though I know you don't keep stuff around.

[@Exilia4N]

this manual work for Acer KG271 Cbmidpx ! gj man! too many people have same problem with Acer monitors and nobody answer! nobody only you! thank you so mutch! repair it under 1 euro LOL sorry for my bad english :)

[@RoshGG]

I have the same issue, suddenly it just went all white and stop working. I have a friend who has this kind of knowledge so we're gonna try to repair it. Thanks for the video !!! love from Argentina

[@lucaripoli2717]

How's going? It happened to me 2 hours ago

[@sodderbridge]

If the fuse was marked "O", then it was 2.5 amps.

[@jeffescortlx]

Looks like it was. I'm pretty under sized at .5 amp. Although I used a resettable fuse. So far so good it's still chugging along. I can't imagine the LCD panel (not counting back lighting) to need more than 6 watts. So maybe it will be ok.

[@silva862006]

Jeff you are the truth!! Avid follower of your channel!!

[@aimbrock]

I had a 2002 Range Rover that used to do this during the winter months when the weather was rainy. The issue was somehow moisture ingress related but I never pursued it very far. When you started the vehicle the dash LCD would show only a white screen rather than the NAV display. It was a 4:3 LCD made by Toshiba with RGB Sync On Green signalling common on European cars of that era. It's a pretty common issue for that model. Do you have any thoughts on what it could be?

[@MP_7]

Thx nice video bro. Which flux are you using?

[@jeffescortlx]

Amtech 559 from Louis.

[@MP_7]

@@jeffescortlx ah the best ofc 😃

[@muhammadsarim2028]

Can you please lmk how did you open the screen

[@deankay4434]

TV, Laptop or car, Best Practices work. What do I mean? Confirm the complaint, next do some simple checks while getting a lay of the circuit(s). Do a good visual as you may see the possible problem like signs or hot areas or discolored spots, replace the obvious but check to see if the problem is still there and confirm the part you removed is good or bad. This helps with confidence to move forward as you said, “Something made the fuse open”. Follow the circuit, simple quick test as the DMM on diode setting produces some voltage as diodes have a 0.7 volt drop. The mosfet is used as a switch & 95% are “N” channel type. If the numbers can be read, chances are you can find it or specs to help get a different brand. If in doubt, always go slightly bigger in amps, voltage or both. I miss the days the diagrams was on paper and under the back cover. At least many print it on the PC board. Nicely done.

[@aminezakaria2734]

Awesome video. How did you figure out the Mosfet part number ?

[@jeffescortlx]

After I figured out the original shorted mosfet number, I googled it and found a Russian repair forum where someone else figured out a cross reference number.

[@aminezakaria2734]

@@jeffescortlx Thanks for the reply. I had another Mosfet blow up and the reference number was burned it's designator is (Q9) not sure if I can replace it with the one you suggested.

[@jeffescortlx]

@@aminezakaria2734 I wish I could help, but I don't know if that same one will work.

[@aminezakaria2734]

Your video helped me a lot already.Thanks a lot. Can you share the russian forum please?

[@jeffescortlx]

@@aminezakaria2734 monitor.net.ru/forum/threads/647496/

[@hoyschelsilversteinberg4521]

Just removed the mosfet and fuse and resoldered a working O Rating 0603 SMD 2.5a fuse and A09T 30v 5.7a mosfet. Still the white screen... hmmm... I'll have to get back to you on this. I wonder if I just got a bad batch of replacements... EDIT: Just replaced both components again (for the 3rd time), both components are working and I'm still getting the white screen. No short is being detected with the multimetre with the test pads. Struggling trying to find what else could be the problem here.

[@jeffescortlx]

Was the original fuse and MOSFET bad?

[@hoyschelsilversteinberg4521]

@@jeffescortlx yep correct. Same exact symptoms. Going to investigate further as to what can be the issue, I spent last night doing the same but couldn't find anything out of the ordinary.

[@hoyschelsilversteinberg4521]

@@jeffescortlx Yep, confirmed them both being faulty. Though I have just found out what the problem was. The problem for me was not just the board attached to the monitor directly but also the Power board from where the ribbon cable comes from. I was getting 7.6v instead of 12v. A blown 21h09 MOSFET just before ribbon cable from the Power Board is the culprit. I just ordered a replacement!

[@jeffescortlx]

​@@hoyschelsilversteinberg4521 good find!

[@TaylorGMoore]

Did this fix it? My Mosfet in the video was bad so I replaced it. Fuse was fine, measured 6.8V when it shouldve been 12 then came back and saw this comment​@hoyschelsilversteinberg4521

[@sjn7220]

Nicely done! A bit beyond my skill level of just replacing blown electrolytic caps.

[@jeffescortlx]

If you can remove caps you've got this repair under control too.

[@timothystanley8389]

Thanks for the video. I had the same problem and had to replace q308 and q9(because it was literally melted) with a a09t. I also replaced the fuse at f001, but i am still getting a white screen. Im getting no continuity issues at the screen pcb. Any tips for what else could be the issue?

[@jeffescortlx]

Have you confirmed that the power supply is working and that power is making its way to the places it's supposed to be?

[@byRaiKa]

Thank you, James Donkey it worked on JD27GM144 model monitor (same motherboard)

[@buzzerr1]

Tried it and didn't work! Replaced the fuse and Q308 and now the screen flashes white instead of solid white... Feels like an "almost" working. Tried my luck with Q303 as well and didn't affect the behaviour. Nice video! Really made it feel possible... for some. 😅

[@ndrewwb]

Thanks for making this video, dude! it's helped me to diagnose an LG 27GK750F-B that suffers from the same problem. They quoted me £230 for repair service but after removing said mosfet, all the shorts are gone! great stuff, man

[@jeffescortlx]

Sweet. It must share the same LCD panel. Glad to hear it helped!

[@Neighbor512]

Yes so far from what I'm seeing they use the same board

[@nhozdien5058]

I just experienced that today on my LG 27GK750F-B. Did it make a coil whine noise? I tried to get to the daughter board but stripped one screw.

[@ndrewwb]

@@nhozdien5058 yep! those were the symptoms on mine too. I think the noise comes from something vibrating on the main circuit board when that power rail goes into short circuit. For what it's worth, you might be able to work past that stripped screw if you carefully drill it down so that the head comes away and you can continue working from there. Mine failed again pretty quickly when I used A09T MOSFETs so I bought some 12H34s from aliexpress and those worked great for me. I've since doubled the recorded working hours on the monitor and I've had no problems at all :) Well worth the time if you can do it

[@nhozdien5058]

@@ndrewwb hey, thank for the reply. Finally got time to open the striped screws. Turn out, I wasn’t that lucky. I got at least 8 shorted capacitors, and the said faulty 12h34 mosfet 😢 Some of those cap is extremely tiny, like less than 0.5mm, and I don’t think i can replace those. Probably try out local electronic repair, if their quote is as high as LG from what you said, i will buy another used 240hz monitor from amazon.

[@aquarius9909]

Great video. Working on the same monitor. I had to replace Q9 on the main board ( was incinerated, could not read p/n ) . C334, C338, C806 were shorted too on the screen's pcb. Removing C338 ( tiny black component , measures 0 ohm ) there was no more short on C344 and C806. Replacing Q308, F001 as you did , I get steady 12V on the screens's pcb, and these voltages : 1.24V on L302, 0.86v on L304, 3.3v on L305, 0.0V on L308, 0.09V on L307, 11.92V on L301. It is obvious not all voltages are correct , and there is still no picture , backlight only. If someone has more info , please comment.

[@jeffescortlx]

What part number did you use for Q308?

[@aquarius9909]

@@jeffescortlx To be on the safe side, I used a more powerful SOIC-8 mosfet AO4406.

[@Tube634]

What did you replace q9 with? :)

[@aquarius9909]

A31E mosfet, SOT-23 package

[@Tube634]

@@aquarius9909 no results on Google. You have any link? Maybe a datasheet. Thanks! :)

[@rickchowsr2532]

Another great repair. Great job brother 👊🏼

[@XINbladeX]

I have the same problem but on a similar model in the PG278QR I have a medium level of electronics but this type of equipment is the first time I have seen it, could you help me guide me and I have looked for the damage and I can't find it, it is an ASUS model!

[@XINbladeX]

Do you have any method to contact you? I will pay you by PayPal if you help me... I am a cell phone technician and it is my first time that I see a monitor with this damage

[@jeffescortlx]

​@@XINbladeXwithout having the monitor in front of me it's going to be very difficult to troubleshoot.

[@XINbladeX]

@@jeffescortlx mmmm ok ok😭

[@FAMOLS1]

Mine turns white after a while of use. It's like its overheating. I turn it off for a while and then it's back to normal. Did your monitor behave in the same way?

[@him7884]

Hey, I replaced the blown fuse on my and the transistor, but still a white screen. However, the fuse doesn't blow when I turn it on? Have I perhaps messed up something when soldering?

[@jeffescortlx]

You might have a different issue going on.

[@izevap]

Same components as LG GK750F. I've been searching for a technician that will do this soldering service, but it's just so hard where I live... All of them want to exchange the whole PCB, but LG doesn't provide 'parts', only the full panel for 75% of the monitor value.

[@_lime.]

Thanks for the info. I have the same issue but I can't seem to get it fixed. It was shorted but the fuse wasn't blown. I replaced the transistor and it fixed the short. Replaced it and still no short so we're good there. Still just got the same white screen, so I also replaced the fuse in case it was damaged, but again, no dice, just a white screen. Any other ideas on what might cause this/areas to check?

[@jeffescortlx]

Where did you buy the replacement MOSFET from? What part number did you order?

[@oOWaschBaerOo]

@@jeffescortlx the issue on his device is the same like on mine, the shorted transistor caused another one to blow on the main pcb directly at the connector .. sadly i dont know what the replacement part is as it is unreadable ...

[@jeffescortlx]

@@oOWaschBaerOo sorry I can't be much of a help right now. I don't have the unit here and taking apart anymore to look

[@michaelbrunet532]

Hi Jeff! Thanks for this video. I've started opening my monitor but sadly the problem seems different. My fuse "beeps" but the 3legged thingny is all shorted to grown. Is it possible that id only have to replace it? (i think you said it's called a moset.)

[@jeffescortlx]

If the MOSFET shows any shorts between two legs you'll want to investigate and/or replace it.

[@ayyy_julio7249]

This just happened to me and I am ill-equipped to fix it as he did, also my warranty has run out. Do I have any options?

[@jeffescortlx]

Find a local cell phone/console/PC repair store.

[@minmin-yb8wc]

I'd like to find the same one as the newly attached fuse. What can I find out?

[@fabi_sr9b925]

I have the same problem with VP278 and i cant find the broken part...

[@pafunleal3849]

Dear Jeff Thanks for your generosity sharing your knowledge and experience with so many other folks like myself. God bless you! I have an ASUS VS24A with very similar problem - black screen, no logo, but when connected though a HDMI cable to a laptop, the computer recognizes the monitor, however no images are shown ASUS has suggested me to take it to an authorized shop but the cost was higher than a new monitor in Brazil. The problem started some 2 years ago when it went black and standby led was not turning on. I checked the power suply and replaced some inflated capacitors, a Mosfet 70Amps etc The standby light now turns on, backlight lamps are lit, etc but no images are formed I cheched the voltages goint to the ribbon cables tha connects to the monitor circuitry and the voltages there are 1.3xx Volts not 12V Without the schematicas (denied by ASUS) I have no clues as to what voltages should be supplied form the power supply board to the video card. There should be a 12V going through? Could you please offer some help? Thanks in advance and again congrats on the nice job

[@jeffescortlx]

Sorry I'm not familiar with that problem with that model. You will need to either do some deeper trouble shooting or try replacing the main board and or t-con.

[@HETPEZB]

*Great job like always!* Recently picked up TV that someone was giving away due to the half screen backlight was out. TV was used outside, therefore got some oxidation on the LED strips. Few solder points later I have a working TV with a free Netflix account (since the previous owner never logged out from the app :) ).

[@jeffescortlx]

Fixing free stuff is great!!

[@sjn7220]

Just fixed 2 Samsung tvs that were being tossed. One had a bad Wi-Fi card that I simply disconnected the other had some blown caps on the power supply board.

[@jeffescortlx]

@@sjn7220 I've heard about the Samsung TV with the wi-fi board that shorts out the 5v rail, but I haven't come across any my self yet. It's a nice feeling taking trash and making it useful again.

[@sjn7220]

@@jeffescortlx Yeah, I found this on the curb with a sign taped to it that said it turns off while watching. I though it might be bad caps but they looked fine. I noticed every time I went to the on-screen wifi settings the tv would lock up or turn off. I then looked at the wifi card and it was pretty warm to the touch and looked discolored. Disconnected it and now have no problem with it; have it hooked up to a roku. As you said, I find it super satisfying to fix broken things. I've even fixed many things I have no use for just for the joy of it. But, I'm only an amateur, educated on KZbin.

[@dad_breams]

thanks for the video! mine has the same issue, though the solution has to do with q9 transistor blown on the main board. any ideas why that is ? i ordered another replacement board and it blew again :(

[@jeffescortlx]

Since I don't have the board in front of me anymore I have no idea what q9 does. Sorry I'm not sure what's causing your problem. No short on the 12v LCD flex board?

[@dad_breams]

@@jeffescortlx ill have do some more digging. thanks !!

[@Tube634]

@@dad_breams i have the same problem. Found any solution? What transistor did you replace it with?

[@dad_breams]

@@Tube634 www.ifixit.com/Answers/View/636216/Identifying+and+Replacing+component+%22Q9%22+on+Asus+VG278Q not yet.... the biggest brains in the world are on it though LOL! i have yet to try what jeff recommended and look for shorts anywhere

[@Tube634]

@@dad_breams think it could be FMMT3905?

[@amiko1113]

How did you open up the monitor with out breaking the plastic

[@jeffescortlx]

I carefully pried it apart with a spudger tool.

[@Dex2R7]

I have a 27" Nixeus 240hz that has a white screen with only power connected. No start up logo. Is there a chance it could be the power supply? Or is it internal hardware damage for sure? If it's the latter I'm just going to scrap it since I got a few years out of it. If it could be a power supply then I'll replace it. The green light on the power brick shows solid green LED but I'm not sure if that's indicative of it working correctly. And it's the same price to buy a voltmeter as it is a new PSU.

[@jeffescortlx]

It is probably not the power supply. This sounds like an internal issue.

[@Dex2R7]

@@jeffescortlx I found my multimeter and the power brick is fine. Definitely an internal issue. Thanks.

[@alishoo_gamer6104]

i have same monitor i dont know someone to fix for me how m this fix cost is it worth to sell it for 40 USD OR should i try to fix it thank you

[@jeffescortlx]

Either option is a fine option. Have you looked to see if you have a local PC computer repair shop?

[@unidyn2]

Batteries for the Dyson V6 vacuum cleaner frequently have BMS board problems. If you could make a video fixing the BMS board at the component level it would be a big winner!

[@Phakepasco]

I have the same exact problem is it possible to use a bigger transistor I have a couple I could take off of something but I don't know if I can use a different size transistor?

[@jeffescortlx]

The physical shape and size isn't critical. You just need to make sure the characteristics/specifications and pin out are the same.

[@Gray-Wolf-Media]

I was wondering if you have ever worked on a Kenwood double din receiver with navigation? The reason I am asking is because there are a lot of us that have this unit and from what I can tell is the Garmin Navigation board is causing the unit to stay in standby mode. I have found where one youtuber has taken the board out and refloated the chips and it starts working after that.

[@jeffescortlx]

Sounds like the Chrysler radio.

[@MsExmen]

The fuse you replaced, how many volts does it have?

[@jeffescortlx]

The voltage rating isn't critical. It's a low voltage circuit.

[@JAJerry-ed7ek]

I have that kind of monitor sir Asus VG278QR has a problem with diaplay black screen but if u put on lights display apps it can see but blurd i thinks background diaplay is the problem

[@polynikos9]

I replaced AO9T that it shorted.I replaced fuse that it shorted but the same.White screen... I cant find any short somewhere else.... Have you any idea ???🤔

[@jeffescortlx]

Did you check the power coming up to and past the fuse?

[@polynikos9]

@@jeffescortlx 1.4v... How many must have? 19v?

[@jeffescortlx]

@@polynikos9 I'm not sure, I don't have the boards in front of me. But I think I remember a 12v power rail running to it .

[@carljean]

I have the same monitor, it has the same issue but kinda different. First I’ll be playing for hours, then when I switch something it turns white. Turn off monitor, then turn back on everything alright. Watching a video, games everything good. & turn white randomly. What can you tell me about that?

[@andrey8513]

Hi Jeff I have this issue but my Asus is pg278q and the board looks different. Would you happen to know how and where I can identify the spot for this little guy that I need to change?

[@jeffescortlx]

I don't have any idea, I don't think I've ever seen that specific board before.

[@sebastianturcu113]

Can you tell me what is on the Q9 position on the motherboard? Thank you!

[@jeffescortlx]

Sorry I don't know. The monitor is assembled and in use.

[@christianlee1287]

What are the specifications of the fuse that you used to replace the old fuse?

[@hoyschelsilversteinberg4521]

That fuse should be a 0603 SMD 2.5a. Has an O designation on it.

[@SanyaAndCars]

Can I grab the fuse and mosfet part from another monitor? Any old monitors use something similar?

[@jeffescortlx]

It's possible, but no guarantee you'll find something compatible at random. The parts are available through typical electronics vendors. More details in the description.

[@arcadealchemist]

my monitor will come on eventuall,y but it's like starting a banger, the monitor will attempt to turn on then blink off but over time it warms up and then finally will stay on I am assuming it's some if not almost all the capacitors running on dead. which i assume should be easy to repair but this is an assumpton, the screen does go white but not always. it mainly shows asus logo for a split second then blacks out for 10 to 30 seconds. then trys again each time the logo will stay on a microsecond longer till it blinks for 2 seconds then shows a desktop then after 3 more blinks it stays on desktop . I have the HE version of this monitor need to know how to tear it down tho.

[@jeffescortlx]

It's been a while since I've had one of these apart, but I think the bezel just snaps on. So you might just have to carefully use a spudger to unclip the bezel if you can't find any screws.

[@doomslayergaming4521]

Hi my HP 25x 144hz monitor got a similar problem but its not just white screen when you start mine was flickering and lines are appeared for 2 sec and goes back normal after 20 sec the screen turns white . if you know the problem please help me

[@kevinduprey9326]

Respect... I buy monitors from warranty providers with various issues and wish I had your skills... I fix many just by reseating connectors or cleaning... White screen is usually a no go for me... I've had a few Asus with no power and some with a wavy led back light mostly on whiter colors. Screen is fine just back light slightly pulses like a car lights with a bad alternator. Any ideas? Thanks

[@jeffescortlx]

Flickering backlighting is LED's that are failing.

[@ezurakuro]

Hey Jeff, I have the same Asus monitor as yours but my problem isn't a white screen. Instead the screen is very very dim to almost no display when I turn it on. Is it probably caused by the shorted MOSFET or any idea on how to fix a very dim LCD monitor?

[@jeffescortlx]

Probably has nothing to do with the mosfet. Check the back lighting LEDs.

[@ezurakuro]

@@jeffescortlx I just check the board of the monitor. The component on R805 has burnt. Do you perhaps have the schematics of the board or do you know what specific component is that?

[@jeffescortlx]

@@ezurakuro sorry but I do not have a schematic for this and my monitor is no longer taken apart so I don't know what that component is.

[@kennedyowallo]

Hi i have a Hp omen 27INCH QHD has rhe same proble can it fixed

[@jeffescortlx]

I don't know if that model uses the same boards.

[@fouryeartransform3042]

How did the casing come off though???

[@jeffescortlx]

Pry to unclip.

[@fouryeartransform3042]

@jeffescortlx i figured it out eventually. It's tough to be sure nowadays since most electronics have adhesive that requires heat guns. Big oof.

[@daemonjeep]

When he was checking fuse, did he say conti-nudity? Bahahahsha

[@not2intoutube]

Came here to say the same thing....

[@daemonjeep]

Mad skills! Well done sir!

[@pexuzz]

I got this problem and i wonder how should i fix it when im 15?

[@jeffescortlx]

Find somebody with some soldering experience.

[@xxroboxrebornxx4590]

Hi I have an LG 240hz display that has the same brand of panel, so the same kind of T-CON board (27m14-c05) and it has this issue. The fuse on 12v was never blown and still reads just okay but the same q308 mosfet is the problem causing shorts to ground. I have changed out the damaged 12h34 for a A09T like in the video, once its removed all shorts are gone but when the display is turned on the mosfet suffers a drain + source short and blows, with the white screen problem repeating itself. I've tested the blown mosfets after removing them and the gate doesnt have a short, just the drain and source. I also tested other components around the P303-19 for shorts or damage but everything seems to be reading just fine so I dont know why it keeps on blowing. i also have tested the monitor mainboard without the panel connected and the 12 volts reads good. may I need to try a different type of mosfet? and do you have any recommendation? thank you

[@jeffescortlx]

It's possible the MOSFET's you have are counterfeit.

[@julienmichel4066]

Hello i got the same problem (but with Asus VG278) iam trying to test freewheeling diodes.

[@jeffescortlx]

@@julienmichel4066 freewheeling diodes? Have you checked the MOSFET?

[@sinusshephard5314]

i have a acer xb271h that has a white screen but no blown fuse.

[@romano8036]

Hi @jeffescortlx, I have Asus VG278 monitor with the same problem. Would like to try to fix it too. Would you please let me know if FUSE 2.5A 32V SMD 0603 and MOSFET N-CH 50V 220MA will fit here. Thank you.

[@jeffescortlx]

N-CH yes, but 220ma sounds way too low. Specs are in the video description.

[@romano8036]

@@jeffescortlx Thanks for quick reply, The reason I bought 220MA - I was searching for original 12H34, because I wasn't able to find AO3400 in US, only China and the N-CH 50V 220MA was the first in the search result and it looked similar to the one you dismounted. Sorry for bothering, but if I try 220MA nothing bad gonna happen? Thank you very much again.

[@jeffescortlx]

@@romano8036 Digi-key, mouser or newark should have something compatible stocked in the US. You want a around a 5 amp mosfet. a .22a will blow instantly. I believe I found a ebay seller of the AO3400 that shipped fast.

[@romano8036]

@@jeffescortlx Jeff, I don't know how to thank you. I have kept my broken monitor for over a year, I was applying for manufacturer warranty and they never responded. I was about to throw my 2 years monitor into garbage, but thankfully I've noticed your video. Also thanks to you I've learned how to solder for the first time, I really didn't expected it to work but now I have a monitor that works like nothing happened. Thank you very much man!

[@jeffescortlx]

@@romano8036 I'm glad to hear you got it back to working!

[@MixedRiceKing]

Can you give some pointers to a noob (soldered on a few pcb for fun type of noob) for a project like this? Like where to start, required tools + equipments, skills needed (how to trace a short circuit) etc? much appreciated

[@jeffescortlx]

The answer to that question would be a bit much for a reply in the comment section. But a brief summary would be to continue to research and keep watching videos. KZbin is a good resource for this kind of stuff.

[@NekkoRaindrop]

Hey Jeff, had the same white screen issue. Brought it to an IT friend to help me swap the mosfet but its still showing a white screen. The fuse was good so we didnt replace it. Part number on the replacement I got from mouser is 833-SI3400A-TP. Any idea what I may have done wrong?

[@jeffescortlx]

Was the original MOSFET not shorted? You might have a completely different issue going on.

[@NekkoRaindrop]

@@jeffescortlx Showed that it was shorted when he removed it.

[@jeffescortlx]

@@NekkoRaindrop sounds like you're on the right track, but need to see if something else failed open from the shorted MOSFET.

[@NekkoRaindrop]

@@jeffescortlx How should I go about searching for another short without removing them from circuit? Utilizing a voltmeter on diode mode along the tracks connected to that original shorted MOSFET? Sorry, my knowledge of this is extremely limited but having a starting point to research helps a ton.

[@jeffescortlx]

@@NekkoRaindrop use general trouble shooting techniques. Diode mode and continuity can help you find shorts. Resistance mode can help you find opens.

[@aleks0v714]

What kind of chip fuse do you use?

[@Neighbor512]

So if the fuse has continuity is it good? I just picked up and LG with the same control board doing the same white screen

[@jeffescortlx]

Yes continuity at 0 ohms is a good fuse.

[@Neighbor512]

Ok thanks I got a fast one pulled in buying 2 of these white screen monitors.

[@Lil_Dotty]

Can the transistor short out even though the fuse is still good?

[@jeffescortlx]

It's possible, if something else in the line acted as the fuse, or if for some reason the conditions are right and the power supply can't make enough power to blow the fuse. Check the transistor with diode mode on a DMM and see if it's fishy.

[@AV7Edits]

Hi can you pls do ikon computer white screen 😢pls I have online class and I can’t do it cuz of white screen 😢

[@jeffescortlx]

Sorry, I don't have one of those.

[@AV7Edits]

@@jeffescortlx oh it's ok I found a way to fix it

[@AV7Edits]

Thank you for replying

[@jeffescortlx]

@@AV7Edits Glad to hear you got it taken care of.

[@moebuilds]

I have the same issue, where. I could get those replacement parts from locally in the US?

[@jeffescortlx]

Mouser, digi-key, element 14/Newark or eBay.

[@zacharymccray533]

whats your shipping address my monitor is still broken please fix

[@jeffescortlx]

I'm sorry but I only take in repairs for clusters.

[@ahmedhassan-dy7nf]

Is there an alternative to the transistor؟

[@jeffescortlx]

Probably. But I haven't tried to cross reference it. Details are in the description.

[@ahmedhassan-dy7nf]

@@jeffescortlx A09T is not available with us in Egypt. If there is an alternative, you can say it on it

[@jeffescortlx]

@@ahmedhassan-dy7nf did you try looking for AO3400?

[@rkan2]

Continudity? :D

[@TheDefpom]

Nice repair.

[@jeffescortlx]

Thanks! I like your channel good work!

[@itjaredbtw1854]

do u know how to fix a DISPLAYPORT HDMI DAMAGED 3IN BLACK LINE cause thats the problem that i have

[@jeffescortlx]

Where is the black line? How is it related to the port?

[@jamesneutron332]

I just swapped the parts and it still doesn’t work. I am on the verge of just tossing it away now. Must be numerous problems that could cause it. :(

[@jeffescortlx]

Was the original fuse blown?

[@saras5909]

Sir ..pls..help My monitor panel white then black... I can't find prob...

[@darksim73]

Mine did this. Am I supposed to do this myself 😂?

[@multivitamin4965]

Anyone know another substitute equvivalent of mosfet? I dont have the a03400 a09t in my country...

[@jeffescortlx]

Did you try eBay? That where I got a set of them.

[@Cutekitty._.]

Bro,what i can do when my monitor screen is white and menu isn’t working Only white screen

[@jeffescortlx]

Have you tried looking up on KZbin for a video that shows you how to fix that?

[@KyupalNgYoutube]

so sad :( got same issue but didnt fix mine i tested the fuse and its still working and the mosfet is also working but still in white screen :( can you please help me

[@jeffescortlx]

Sorry I don't know what is wrong with yours.

[@lebaonam8022]

Thank i change a09t done. But i use 4 day and it problem same . And i replace again but not work. It still whitesreen. Can you help me?

[@jeffescortlx]

Did you check the fuse?

[@lethanhtung1056]

@@jeffescortlx yes i change new fuse but same

[@jeffescortlx]

@@lethanhtung1056 might want to try a different mosfet.

[@lethanhtung1056]

@@jeffescortlx i find done it problem in mainboard . Few min i give you sreenshoot

[@lethanhtung1056]

have you got shematic mainboard ?

[@annierenard5954]

very good video , as usual , thank you

[@alexissixela6914]

What modle fuze should i use?

[@alexissixela6914]

will try one off of a IED

[@MyGamingThumbs]

Wow this has plagued so many people!

[@Mannymannythings]

Do you offer repairs for these

[@jeffescortlx]

When you factor in shipping both ways it's not really economical to send it in for repair.

[@coronnation8854]

I have zero knowledge about this kind of stuff, but I refuse to pay Asus a couple hundred to fix their trash. What resources would you recommend for me to get started in aquiring this skill-set?

[@jeffescortlx]

This might be a bit much for a beginner. But if you have a local computer repair shop that can solder they should be able to handle it.

[@christianlee1287]

Is the fuse 0603 smd code O

[@jeffescortlx]

"O" is 2.5 amps according to a previous comment.

[@christianlee1287]

​@@jeffescortlx Thanks for answering my comment. I also want to try to fix my monitor with the same model, and I just want to make sure the parts that I will be buying are correct. I think the original mosfet is P5002CMG, but I can't find it in online shops, so I'm going to use the ones that you used to replace the mosfet.

[@ix600x]

I have yellow dead pixel how to fix

[@jeffescortlx]

You can't fix a pixel. You have to buy a new monitor if it bothers you too much.

[@يوسفالعمري-ن6ك]

From where i can buy the parts ?

[@zixboYt]

Can I just send u my tv n u can check out what’s wrong with it?

[@ashishkumarsingh1339]

thanks a ton , my friend ;) it works

[@unitybeing777]

God Bless you, Sir.

[@operationdabardos1236]

How did u open that. Monitor?

[@jeffescortlx]

Pry tool spudger and careful patients.

[@operationdabardos1236]

@@jeffescortlx thanks just quick one I av two of these Monitors one with Gsync problem one with white screen it posible to change Gsync board all I need one working for me

[@KyoHeiSuminoe]

same problem bro My Monitor ASUS same issue with this