Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
You're absolutely sure? What will happen if I needed a 1.5A and this is a 1A, is it going to blow up or something? Should I order some 1.5As as well? There was a guy with the same issue as me that ended up replacing his with a 3A. It was an ASUS Rog series gaming laptop though.
Thank you, -J...
coldfuse
Member
Last Activity: 04-23-2015, 03:39 PM
Joined: 02-15-2015
Location: Jacksonville, FL
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
Well, I am looking for a 0603/1.6x0.8mm Surface Mount Multilayer Ferrite Bead. Not sure of the rating. I'm thinking 1.5A (correct me if I'm wrong) based on what I saw marked next to the fuse for the backlight built into the screen. The webcam, and mic both run on the same ribbon as the ribbon to inverter card, therefor we can assume the pins for the led backlight for the screen are on a separate inductor considering everything else is working fine. I would definitely send some complaints to the manufacturer if they weren't....Last edited by coldfuse; 04-22-2015, 08:17 PM.Leave a comment:
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
On the component? My brother went in there to bypass it using some wiring and when he went to heat up the contact points the component sucked right up into the tip & since the component is so low down to the board the heat coming off from the tip of the gun was causing the board to bubble up. Such a touchy task....Leave a comment:
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
Here we go! Now I just need to identify this here component!
Is this an SMD Ferrite Bead/Inductor/Choke? Someone that is having a identical cause and issue on an ASUS ROG claims theirs is an SMD Ferrite Bead.
I have included two images of identification markings for the PCB and one image showing the blown obliterated component....Last edited by coldfuse; 03-04-2015, 07:33 PM.Leave a comment:
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
Budm, new, the screen has been replaced (which got me a new inverter board, as well) and the problem still persists. I need to start identifying parts on the MOBO. Can you look at my MOBO pictures and help me identify the parts? I'm hoping the faulty part will be in the vicinity of the inverter slot, though I have seen some boards that have faulty parts that effect the circuit to the backlight all the way across the MOBO. Thank you, -JLast edited by coldfuse; 03-04-2015, 03:01 PM.Leave a comment:
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
[B][U][CENTER]Update:[/CENTER][/U][/B]
[CENTER][B]F1:[/B] Top/3.27-3.29vDC Bot/3.23-3.29vDC
[B]F2:[/B] 0/0vDC Both bridged and unbridged[/CENTER]
There we have it, no power is passing through F2, which is for the WLED, even when bridged.
Something to note since the screen has cracked, I no longer see the screen when shining a light at it. I don't think this would matter, but just a note.Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
[B][U][CENTER]Update:[/CENTER][/U][/B]Last edited by coldfuse; 02-17-2015, 09:04 PM.Leave a comment:
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
I see, well I will have to try this sometime next week as I have to order a new screen. When removing the screen, the adhesive between the frame and screen was so strong, that upon sliding a card between the frame and screen, to break the bond of the adhesive, part of the screen ripped up with the adhesive. Is it still possible to run these tests in the event that has happened?
I appreciate the extra info. Worse comes to worse, I now have a screen with an inverter card that I can test with without the fear of...Last edited by coldfuse; 02-17-2015, 06:48 PM.Leave a comment:
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
Alright, here's an update. I just spent about roughly 4 hours reading and replicating tests that were used in diagrams, logging some real experience at the same time which I plan on putting a lot more time into. I was off quite a bit on what I thought I knew, I guess I just trusted the person who briefed me a bit too much on this subject than I should have. So, I will continue to update this thread throughout my journey.
I'm now using my Fluke 78 MM and I have to say, it's so much better than my cheap MM. It...Last edited by coldfuse; 02-16-2015, 05:07 AM.Leave a comment:
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
Ahh, I see. So, the issue must be an isolated one on the motherboard. Just because there are fuses on the inverter board attached to the screen, does that nullify the need to put a fuse on the motherboard between the power supply and the inverter board?
If there is a chance, can someone help me identify where it is on the mobo or what is causing this issue?
I didn't trace it using my multimeter, I just took a look at the markings on the board and got a generalized idea of what the route was, I'm...Last edited by coldfuse; 02-16-2015, 01:18 AM.Leave a comment:
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
From what I understand if something reads 1 and is a fuse, then it is bad. But if it reads .(something) it is good if it reads back what the ohm reading is when you touch the two leads together. Please correct me if I am wrong. I am using this multimeter.
Fuse F2 does test .1 on the 200 OHMs scale. So this is a good fuse? What about F1 if it registers .2? The brown cap doesn't read anything, it just sits at 1.
Using my fluke leads on my MAS830B, I'm getting .4 on Fuse F1 and .3 on Fuse F2. I'm not using...Last edited by coldfuse; 02-16-2015, 12:47 AM.Leave a comment:
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Re: ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
Ahh okay, I appreciate the correction. As a correction to my image I posted, it does not register anything when testing using OHM 200.
As for Fuse F2, it does not show continuity above 1 ohm. Only .1 @ 200 setting.
As for Fuse F1, it registers .2 @ 200 setting.
I just fixed my posts with the readings I'm getting, as I put the wrong information up originally.Leave a comment:
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Budm,
I could use your expertise and exposure, as I see you have assisted previous threads pertaining to this matter. I would greatly appreciate it. Thanks, -J
[url]https://www.badcaps.net/forum/showthread.php?p=531082#post531082[/url]https://Budm,<br /> <br /> I could u...st531082[/url] -
ASUS UX51VZ-DH71 - Back Light SMD Fuse Identification
[CENTER][U][B]Model: UX51VZ-DH71...
Motherboard: 60-NWOMB1A01-B07
WLED Screen: LP156WF4(SP)(B1)[/B][/U][/CENTER]
[LIST][*][B]Description of issue:[/B] Back light for LED Screen does not receive power.
[*][B]What caused the issue:[/B] After fixing a no sound issue on the laptop, during reassembly, I mistakenly reconnected the battery, before reconnecting the inverter ribbon cable back to the inverter slot.[*][B]Notable occurrences:[/B] Corners of the inverter slot, and ports on the right sparked once. I immediately unplugged the battery, and took a break.[*][B]FunctionalityLast edited by coldfuse; 02-15-2015, 11:12 PM. -
Re: New Members - please post your introductions here
To whom it may concern,
I go by J or on this forum, Coldfuse. Feel free to call me either.
A tid-bit about me, I'm currently a college student obtaining his AA to transfer into a Bachelor program for my Bachelors of Computer Science. I've always had a natural itch for technology and that's what has driven me my entire life to dive deep into the hive.
What has brought me here was fairly enough is search for a solution for my current predicament, a suspected blown Backlight Fuse on a board...Leave a comment:
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