Re: Request: GA503QS Schematics/Boardview
Request fulfilled offsite. Uploading for future google searches
MOD EDIT: Bios moved -> [url]https://www.badcaps.net/forum/showthread.php?p=1246558[/url]
.Re: Request: GA503QS Schematics/Boar.../url]<br />
.Re: Request: GA503QS Schematics/Boardview
Request fulfilled offsite. Uploading for future google searches
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down1nit
Member
Last Activity: 04-20-2025, 12:57 AM
Joined: 10-25-2016
Location: Oakland, CA
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Last edited by SMDFlea; 06-13-2023, 01:13 AM. -
Asus GA503QS Bios
Request fulfilled offsite. Uploading for future google searches...Last edited by SMDFlea; 06-13-2023, 01:11 AM. -
Re: Razer Blade 15 (2020) missing components
I found this thread searching for 'razer "schottky"' since my schottky diode near the battery connection on my customer's Blade had a similar "poof" event. There were no other issues. Other than the traditional battery = spicy pillow. Razers and their batteries huh?
The diode I ended up ordering was NONE since I was able to find a diode with printed markings of [I]x[/I][B]24[/B][I]x[/I] something on another donor board I had. They are quite common apparently. Searcher from the future: you might have...Leave a comment:
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Request: GA503QS Schematics/Boardview
Device: Laptop
Brand: Asus
Model: ROG Zephyrus G15 GA503 / GA503QS
Board Number: GA503QS_MAIN_BOARD R2.3
Request: everything (BIOS, FZ, PDF, ZIP, etc)Last edited by down1nit; 06-12-2023, 11:48 PM. -
Re: NB3029_MB_U_V4 Schematics Request
Amazing. Do you happen to have the boardview? It's like apple, no masking at all.Leave a comment:
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Re: NB3029_MB_U_V4 Schematics Request
Thanks flea, I typoed the board number in the content as well.
Board Number: NB3029_MB_U_V4Leave a comment:
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NB3029_MB_U_V4 Schematics Request
I have a single blown SOT-23-5 thingy in the EDP circuit for this device. [URL="https://www.badcaps.net/forum/showpost.php?p=1241661&postcount=63"]SMDFlea probably ID'd[/URL] it but I would like to not explode this thing just in case
Device: Laptop
Brand: Lenovo
Model: Ideapad 5 Pro 16ACH6
Board Number: NB029_MB_U_V4
Request: Schematic and BoardviewI have a single blown SOT-23-5 thingy in the EDP circuit for this device. [URL="https://www.badcaps.net/forum/showpost.php?p=1241661&postcount=63"]SMDFlea probably ID'd[/URL] it -
Re: IC Marking Codes and Datasheets #2
Good grief that was fast. Yeah I think you nailed it! I've requested the schematics with another resource, I will post here if I get no love.
Badcaps is the best. SMDFlea is #1Leave a comment:
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Re: IC Marking Codes and Datasheets #2
Never had to ask before, but this IC a SOT-23-5 is marked with
[U]K[/U]2N18
Pin 1 has ~600mA
Pin 2 is GND
Pin 3 seems NC
Pin 4 is 1.8v directly next to a 100K resistor to gnd
Pin 5 is 3.3
It's on the EDP circuit, possibly BKLT or EDP PWR? One cap blew and pins 1-2 are shorted on the bad device
One website says it's a RP400N301B (smdmark)
The board is labeled with NB3029_MB_U_V4 and the FRU is 5B21C22573
The machine is a Lenovo Ideapad 5 Pro...Leave a comment:
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Re: Asus GU502DU - CPU fet dead, now no battery charging
You're all right mate. It's a set up you've read hundreds of times, you were looking for the familiar or unfamiliar. [I]I [/I]actually should know better, I'm not really new at this and I am embarrassed (but proud to have made an example for google searchers).
The adapter is absolutely part of the "equation" of board repair, in that it's sometimes variable.
Also I just read that sometimes the onewire resistor is in the tip, sometimes it's in the transformer box. This true? Guess I was lucky...Leave a comment:
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Re: Asus GU502DU - CPU fet dead, now no battery charging
This was it. Hopefully my experience will allow other techs to find this circuit which was clearly printed, but ignored by me. I put a blob in between pins 1 and 2 on PQ6004 and the (third) battery is now charging at 3 amps and climbing. Reformatt, thank you. This is the first I've seen this circuit, I suppose my shop is not as high volume?!?
mon2 I love you.
Thank you as well. You asked me to plug in the adapter and I did not. Apologies. I do not have an adapter...Leave a comment:
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Re: simple BIOS question !!
W25Q256JV
or
W25Q128JV
should be the markings on the chip. Perhaps labeled on the masking as UC5 or UC6 respectivelyLeave a comment:
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Re: Asus GU502DU - CPU fet dead, now no battery charging
Reread what they said, yeah, on my 4th battery right now. Also, found a used BQ24780s and it has the exact same symptoms as the OG BQ did.Leave a comment:
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Re: Asus GU502DU - CPU fet dead, now no battery charging
I tried a couple other bq24780s from dead boards, they showed different symptoms that I didn't like so I put the original back on.
I'll toy around with different chips, wouldn't be the first time a chip was partly broken internally. Thank you.Leave a comment:
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Re: Asus GU502DU - CPU fet dead, now no battery charging
Got it, that makes sense. Good to check.
SRP - ~40M to ground
SRN - ~40M to ground
.471 on diode mode SRN/P
As much as I know how to check them. The resistances across pins are all megaohm range. Gates, sources, drains all seem fine in all directions. Diode mode (red on ground) shows .397 on AC_BAT_SYS which is right after PQ8902, which seems low-ish?...Last edited by down1nit; 04-11-2023, 10:02 PM.Leave a comment:
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Asus GU502DU - CPU fet dead, now no battery charging
I normally am able to search and repair by myself, but not on this one. Nice Asus laptop had a short on one of the dual fets feeding the cpu, lucky customer! The board works, boots ok, but the battery does not charge. I don't have a Laptop Battery Analyzer yet so I ordered a replacement. Now I'm 3 replacements deep and I'm out of ideas.
Here are the measurements around BQ24780s that I know to get. this is on my bench supply set at 19.5 and the latest, best battery I have:
ACN/P are both 19.5 and
ACDRV is 25.46
ACDET is present at 2.654
ACOK is... -
Re: Dell XPS 9310 LA-J144P REV 1.0 bios fix
No worky. I love you though.
Flashed using a xgecu II. Seems to do the same as before. Dell logo comes on, it goes away briefly, comes back, does the 6 white, 3 amber about 4 times in a loop and powers off again. Pulling plenty of current when off so it's charging battery ok.
I have tried all the ways I know how of performing a recovery (i think i've only had ONE dell bios recovery go to plan), ctrl-esc, fat32 on a 8gb usb 2 drive, ntfs just in case too, bios_img.rcv BIOS_IMG.rcv etc.
Is there an...Leave a comment:
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Dell XPS 9310 LA-J144P REV 1.0 bios fix
XPS 9310 gets image of dell logo and powers off after the 6, 3.
Service tag: 2C1B3F3
I tried my hand at it with FIT and ME Analyzer but was not successful... -
XPS Slooooooow charging after blown diode.
XPS 9360 | LA-D841P
Schottky blew on dc in. I repaired the traces, replaced the diode, checked diode mode, and tested with no batt. Powered on just fine first time. For good measure tested all the other passive components that lead to the power IC and all seems fine. Tested with battery and the battery is now charging, adapter is recognized, but the battery charges only 2% per 20 mins or so. Urf. Gave it time since it could have been sitting for months for all i know.
Same slow charge rate. Replaced the power IC since it's visibly in line with the exploded diode...
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