Laptop HP250-G5 mainboard LA-C701P

[alex26]

I have a problem with an HP laptop model 250 G5, mainboard LA-C701P. The integrated PU2 is ok, being replaced, but the problem is with the 3.3v LDO voltage, the 5.5V LDO being ok. On pin 15, instead of 3.3V, I have 3.16V and a consumption of 150m, the integrated only supports 100mA, it gets very hot. I injected 3.3V on pin 15 and the consumption remained at 150 mA and there is nothing hot under the thermal chamber. I disconnected the resistance towards pin 125 from the integrated UK1 and the consumption dropped to 0, and I assumed that the consumption is from the integrated. I replaced it with...

[ianbak]

Hi,

I have an HP 255 G8 that runs for as long as its battery holds charge but won't accept AC power.

I have partially diagnosed the problem and the issue seems to be that there is no ACDRV output from the BQ24735 to turn on the two input MOSFETs. The 24735 has a VCC of 19.57 V, the ACDET input is at 2.93 V and the REGN 6V LDO is outputting 5.98 V, so everything looks good - but ACDRV is stuck at 28 mV.

I've already replaced the 24735 and both input MOSFETs and nothing has changed.

I'd appreciate some suiggestions as to what to try next.

[mekvit]

Model number: Dynabook T552/58HR

Serial number: 5D014496Q

Motherboard number : DK10FG-6050A2509901-MB-A02

Problem: Delay POST and hangs on windows logo when graphics driver is installed

I have done everything possible, it has no graphics, bios bin I downloaded from this site didn't work. Please I need a clean bios. Thanks.

Below is my bios bin file.....

[Ismail-U50]

[B]Gigabyte GA-P55M-UD2 bios[/B]
Not display
attached Backup[B]Gigabyte GA-P55M-UD2 bios[/B]
Not display
attached Backup...

[lwc198]

Hi all,

Could someone help me reset the password from this laptop

HP Elitebook 850 G5
SN: 5cg8418xbb
2FH34AV

Thank you...

[gizaha]

Hello. I have problem with Dell psu, outputs are ok but it does not give power ok signal.
It has a secondady board with wt7527s to check inputs. It doesn't give PGO because it doesn't take enough PGI.
It takes PGI from a voltage divider.

I draw a schematic for you to understand.
My first question is why 5v use two transformer pins, while 12v uses only one.
My second question, is pin 2 in transformer weak? After resistor, diode and voltage divider, result is 0.7v instead of 1.2v, so wt7527s does not output PGO....

[RetroComputingGrotto]

I've had a set of speakers come in with the fault of [B]not powering on[/B].

I could hear something wrattling around in the speakers so we played a game called [B][I]Guess What's In The Speakers![/I][/B] and this is what we found:

[ATTACH=JSON]{"data-align":"none","data-size":"custom","height":"517","title":"Behringer MS16 Speakers","width":"401","data-attachmentid":3274461}[/ATTACH]

1 random loose nut and part of a BIC Biro pen.

After...

[DeniS182]

Hi all,
I have here gaming laptop asus ROG with motherboard problem. Only orange LED is on, battery charging. 3.3V is on power button and on bios chip. 5V also present. All resistances on coils looks fine instead of GPU coils, only 0.5-0.6Ohms to ground. I don't know if gpu is dead. Can samoone help me to diagnose this problem? Thanks.

Have someone schematic/boardview for this board?

GX701GX REV. 1.6

[URL=filedata/fetch?id=3274440&d=1716210813][ATTACH=JSON]{"alt":"Click image for larger version Name:\tIMG_3026.jpg Views:\t0 Size:\t2.99...

[Ismail-U50]

Please help me repair my bios file not display
Model No: GA-P55M-UD2
attached file is down...

[thesame]

The unit had a battery replacement , it used to work with a 2200 mah battery that i have found swollen, i have replaced it with a 1500 mah battery( i couldn't find one available at 2200mAh), tested working, after 2 months of beeing used in the car always plugged to the charger the owner sayed that it's not charging, the battery had 3.3 v instead of 3.7 , i have installed a new battery of 1500mAh, the unit powers on , shows 1% battery and it only draws current when the display is on and only shows the charging icon when i first plug the cable in then it stops after 10 or 20 seconds,and if i turn...

[danito]

Dell Latitude 5590 ST FH1MNQ2
DDM80 LA-F411P REV 1
pwb mp3pg rev A00
Can you help me?
Thx...

[mustangank]

casper f650 f15kr_dsc rev 2.0

bios file not working;...

[digtalhd]

Hi everyone.
I need BIOS for my Sony Vaio VJPG11C11N
S/N: 4377769
Thanks!

[hamzafox]

hello please help i have dell inspiron
model p130g
screen size 14
cpu core SRG0N I7-1065G7
gpu [B]Nvidia N17S-G3-A1 (GeForce MX330)[/B]

note idon't have a backup
I tried many files to no availhello please help i have dell inspiron
model p130g
screen size 14
cpu core SRG0N I7-1065G7
gpu [B]Nvidia N17S-G3-A1 (GeForce MX330)[/B]

note idon't have a backup
I tried many files to no availhello please help i have dell inspiron
model p130g
screen size 14
cpu core SRG0N I7-1065G7
gpu [B]Nvidia...

[jm1234]

Hi,
I'm troubleshooting a power supply board and one opto coupler seems shorted. It's a through-hole, marked with 3 lines:
1223
816A4
W
I'm not sure what replacement to buy for it. It resembles LTV-816 ([url]https://www.tme.eu/sk/en/details/ltv-816/optocouplers-analog-output/liteon/[/url]), but I'm not sure it's 100% that. The data sheet shows multiple sub-types like 816M, 816S, but 816A is not there.
I do have other functional pieces on the same board, so I could do some measurements on those, but I'm not sure what to check.
Any idea appreciated.Hi,...

[Aditya11ttt]

Anyone has software to convert allegro to Board view Cad

[bamboofuto]

Hi,

Does anyone have schematic for Dell Latitude 3420 (Cyborg L14)
i need part number for the circled component

[ATTACH=JSON]{"alt":"Click image for larger version Name:\tDell Latitude 3420_LI.jpg Views:\t0 Size:\t1.90 MB ID:\t3274232","data-align":"none","data-attachmentid":"3274232","data-size":"custom","height":"973","title":"Dell Latitude 3420_LI.jpg","width":"730"}[/ATTACH]...

[woji]

Hello, please could someone help me find or share the EC firmware for the MSI Katana GF76-11UC laptop?
The firmware can also be extracted from the BIOS image, but I can't find any information on how to do that.
Thank you

[mon2]

Attached.

[ATTACH]n3274113[/ATTACH]...

[timmerfrans]

[SIZE=16px]Specs:
E14 Gen 3 with AMD
20Y7-CTO1WW
Onboard RAM defect

[ATTACH=JSON]{"data-align":"none","data-size":"medium","title":"hax.jpg","data-attachmentid":3274078}[/ATTACH]

Hey all, I am trying to disable the onboard RAM on this 8 core AMD Thinkpad. I've hooked up the CH341A at 3.3V (not 1.8V because yolo). The chip I'm reading off of is a Winbond 74m25jweiq 32MB chip. I can't select the 74xx chip in any of the CH34 programmers I've tried so I just select a different Winbond...

[luckydip]

Working on this macbook, showing 5v 0A from charger - dead. Board is clean - no liquid, owner said he left it charging and died. Some voltages:

[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.png","data-attachmentid":3274001}[/ATTACH]

After looking at board closely found L8430 damaged/blown open circuit so replaced it. No change, still 5v 0A - I'm thinking over current on L8430 (PP3V8_AON_MPMU_ISNS_VIN) killed U8100?

Tried connecting to another macbook but not in...

[sewsulle]

Good Afternoon,
This is my first post here so I apologize if I miss something.

I'm working on an A1708 that draws 20v and 0a with the board removed.
When installed in the machine, it takes 20v and 0.1a. The fan spins up and the trackpad clicks.

Some measurements:
PPBUS_G3H: 13.13v
PP3V3_S5: 3.3v
PP5V_S4: 5.1v
PP3V3_S0: 0.6v

Any help would be appreciated. Let me know if more measurements would help.
Thanks in advance

[chickenhawk88]

I was wondering if you guys know anyone that sells Super IO chip ITE IT8390-256 flashed with your specific laptop. Im debating to see if this available out there vs buying chip and programmer myself. Right now the chip plus programmer is about $60. But i still need the file that goes on chip. The laptop is RAZER BLADE 15 RZ09-0369.

[Ariel Ruiz]

Hi, I will appreciate if I can get some advice on my problem.

- I have an Acer Aspire A315-41-R8J9, with Ryzen 5 APU (no GPU).
- The laptop can be started (blue led on) but it shows no picture (blank screen), and it looks to be somewhat active, as the fan spins, and processor gets hot.
- I visually inspected and tested some components, with no obvious issues.
- I disconnected not-essential peripherals.
- When testing PL401, I got sparks, smoke smell, and the Acer logo briefly showed in screen but then shut down.
- I tried to re-flash BIOS from USB (Fn+Esc),...

[GraphicMan]

as the title says, i noticed a faint noise/hiss when there is nothing playing that i dont think i have had with this unit before ever, i have not changed its location
what makes it more weird, this noise is gone almost completely if my hand gets within 5cm or less close to it (close to the panel)!!
out of curiosity what does that mean?
thanks

[lostone]

Hello, I came here after finding some similar questions asked on other monitors and hope someone here can help me get an ancient Viewsonic VP230mp (23" 4:3 LCD) back to working condition.

First a little background, I have a background in computer and electrical engineering, and I'm smart enough to know I know nothing about LCD displays and how they work. For this topic I'm as green as they come.
When the display is turned on the viewsonic logo displays in the uppper left for 2 seconds then the screen goes black, the power LED is green (on) and when a computer is connected...

[victor-r]

Samsung Monitor Ls22A300B , Please, I need the Bios file that works for this monitor.
thanks

[Oficinadopc]

I'm trying to enable this Asus X512DA. This model came without backlit and I ordered a keyboard with backlit. As I've been searching on the internet, It seems that the bios as to be modified at the offset DD to 7E. Since I don't have enough knowledge to the task, is there anyone who can make it for me? I attach the original bios file.

Really appreciate the help...

[artesano1969]

Well, I think this is the first time I'm sharing something here, I hope it will help anyone that, like me, is trying to repair one of those damm ASUS motherboards filled with iRog chips. I've written a manual following my experience and findings on fixing a dead ASUS Rampage IV Extreme (R4E).

The ZIP file contains the guide and (almost) all the software I've used in the project. But I think it's worthy because it took me a lot of time to find out a cheap way to work with these chips from Explore with a bare CH341A programmer, and the original EP Console program is really hard to find....

[code9523]

Hi everybody I need some help. I have two sticks of ddr5 and one of them spd got corrupted. The stick of ram only works if installed as second will never boot alone. By checking it by thaiphoon burner it says CRC error detected but motherboard's spd reader can reead it's info. I tried to reflash spd from second working stick by using OC Tool but it says: some blocks are write protected and will not flash it.

Please help me find a tool to flash the spd back to it.

Thanks!

[Prott]

Hello,
I am getting a bit desperate with this one and would appreciate any help.

I came across a NUC 7i7 that initially had a short on the USB header "rail" (one of the decoupling capacitors). But, besides that, it displays a weird behaviour - if I don't attach anything to the m.2 slot it works great (boots into windows, etc.). However once I plug in an m.2 drive the computer won't display anything on the screen.

There's no picture, but the computer is still working (I can turn on/off numlock, etc.). This behaviour remains the same even if I disable...

[Bimad99]

Hello everyone,

i need a working bios for an HP elitedesk 705 g2 base model sff machine, the problem is the machine turns on but there is no display.

SERIAL NUMBER : CZC615CDTY
BOARD MODEL NUMBER : 798073-001 REV 0C
THE BACKUP DUMPS ARE ATTACHED DOWN BELOW.

And this model has three SPI FLASH ICs, two 64mb (U19 and U68) and one 8mb (U11), i need clarification which one is the main bios chip ???!!!...

[Pragmatiko]

Hi all, did you solved? I have same identical problem but I have PP5V_G3S 5V

PP1V_PRIM 0V
PP1V2_PRIM 0V

led of Mac Mini is blinking...

[sauce]

Hi,

I bought a faulty A2289 for myself.

The USB-C meter was stuck on 5V.

After remove the board the U3100 was corroded and also around but quite light.

So I clean the U3100 and see R2834 in bad condition and its value was not good.
I replace it and not the USB-C meter shows 20V, the fan is spinning, CPU is hot but nothing else no picture.

The USB-C meters shows a very low current with all connected. It starts at 20v few mA and then stays at 20v 100mA.

How mush current the board is supposed to take without nothing...

[trepachka]

Hello, I have this HP Pavilion X360 14-ek0033dx laptop with bios lock. I am unable to change drive boot order because of it.
Please, help me remove it.

Model: 14-ek0033dx
S/N# 8CG2272ZB5
ProdID 67W83UA#ABA

Original BIOS file is attached. Thank you....

[abajor]

I was wondering if there is a knowledge base on troubleshooting HDD failures and when it might be viable to try certain repair/recovery techniques.
I recently got a WD20EARS 2TB Drive from a customer in hopes of retrieving data. The drive reads as zero size, I can't hear any head activity but it does appear the platter is spinning I can feel some gyroscopic action picking up the drive.

As a shot it the dark I bought a donor board and swapped the rom chip. Same issue zero byte drive.

I'm assuming that the armature is no longer functional internally so no data can...

[PITERPENY]

Hello ! The system installs but cannot boot and the screen of death appears.

macbook works in safe mode
after pressing the power button, the system starts to boot after 27 seconds, which is a very long time

[elecrep]

could anyone help me with Asus gaming laptop tmt yaml 19 94v-0 schematic + boardview.

[nike486dx]

Long story short: bought a 8” generic windows tablet (based on Atom x5-z8350, bios chip model is Gigadevice 25LQ64CVIG, uefi vendor is AMI Aptio) for some experiments, and it came with bios lock! I dont have any decent 1.8v programmers at hand nor do i have knowledge in modding uefi firmware, so decided to play safe: dumped the bios with AFU utility, which i attach here. I am hoping to get it unlocked. Also included hwinfo screenshots with general information, the board itself looks generic without any markings.
...

[Matt Synco]

I am looking for the boardview file for the G531GW Reb 1.6 that I can load into a boardview software to diagnose some shorts found on a board and where they lead to. Any help would be greatly appreciated.

Thanks

-sin

[Olles4]

Hello people. I trying to repair my Sencor TV. No standby light, not tuning on what i found there is 6V where 12V should be and 8V where 16V should be. Any suggestion?

[Olles4]

Hello people. I trying to repair my welding machine oerlikon citomig 180mp hpf and there is a little board with blown stuff.The problem is i cant identify the value of the blown resistor and diode. Any suggestion?

[madjid911]

Hi friends,

I have a macbook pro A1706 820-00923-A that won't start no signs of life, no liquid, checking the voltages I found PP3V3_S5 was shorted, I removed all the processor coils, but when I 'injects a voltage it is the processor which reacts, can you confirm to me that this is definitely coming from there please?

I have 20V on the usb-c connector, and 13v stable on ppbus_g3h.
I saw that a track had burned out on PPVIN_2V7NAND_LB after resistor R9350
I injected voltage on L7660 pin 1 in short but only the processor reacts

Thanks for your...

[Comps&Cons]

Re-Posted
Hi to all.
I hope this helps someone.
Complete firmware from all EEPROMs on this LG Display
I'm posting this here on its LG PCB title to make it easier to find...

[Arenz]

Hi,

Here's the schematics and boardview for the T14 gen 3....

[bogdan2390]

I have original dump BIOS which is attached.
I wrote another dump on the chip found on this forum and now can enter bios as user mode, but it still has an administrator password and cant change settings in BIOS. How to remove it? Thanks....

[Luke11037]

Trying to recover the BIOS on a asus vivobook 14 M3401QA as i believe it to be corrupted however I am struggling to make a recovered bios image myself. Attached is the bios dump from the laptop.

Laptop specs:
CPU - Ryzen 5 5600H
Model - M3401QA-KM065W
SN - MBN0CX33Y50447B...

[BSamvelov]

Hi everyone. I used Acer Travelmate 6292 with BIOS v.13112, Santa Rosa 1436 (VGA Bios version). This BIOS supported title letters for creating password on HDD.
A week ago an element on textolite burnt and I cant turn on laptop.
I thought that title letters support different types of BIOS.
I tried my new laptop lenovo and my friends old Acer and to regret nor mine nor his laptop doesnt support title letters in
Standart HDD 2,5 inches.
How can this problem be resolved?
Lots of BIOS versions of different types of laptops support title letters in password?...

[duranayar]

Hello. If anyone has it and can measure 2 resistors next to the battery integrated circuit, I would be very grateful.
...

[YellowJacket]

Greetings, everyone!

Would need some help with this mini PC, the issue is - after turning on, PC starts, but there is no picture on the screen, no reaction on LED in external keyboard. Tested with another known good RAM. All voltages are present. Looks like BIOS issue to me, right? I tried binary from this site --> [URL]https://www.gigabyte.com/Mini-PcBarebone/GB-BXBT-1900-rev-10/support#support-dl-bios[/URL] ( version F9 ), but still same behavior. Note, I flashed only BIN file from that archive. Although, it says "1.0" in the linked site, but I have board with 1.1 revision....

[trunguntilyou]

Need bios,, original bios, full power, no image
s/n: MP2F034V...

[AlexVG]

Hi,
I have Microwave BOSCH CFA634
It runs, but after 10 -15 seconds stops working.
Sometimes it shows error E1006.
I can't find this error explication.
Some people say it's communications error between main and display module.
Probably somebody has an experience with this issue?
Can you help me please?
Thank you an advance....

[petehall347]

i am now being pushed for a list of the best tools for the right price to allow me to rebuild 80v battery packs and the like .someone i do work for has threatened to buy me the kit . so things like automatic cell testing kit with many bays . tab welder and suchlike to enable me to get right on it . and supplies that will be needed like new tabs and single cells .

[Ross Kohler]

I'm working on a board that is used to control the charging for a lithium battery. I've tracked the source of the fault to this IC, I believe it's the charging controller but I can't find a datasheet to confirm that. Does anyone know what IC this is?

The text reads:
OAS
TI 24I
AV7V

I struggled to tell if the 'I''s are 1's or just 'I''s. See image attached. Any help would be greatly appreciated!

Thanks!

[ATTACH=JSON]{"alt":"Click image for larger version Name:\tWhatsApp Image 2024-05-18 at 00.19.50_93eaec75.jpg...