IdeaPad Gaming 3 15ARH7 - No Power or Charge

[grimacelord]

Hello,

I've been working on this laptop for a few hours and I am stumped. Still learning this kind of troubleshooting. Hoping someone can help.

[U][B]Computer Information:[/B][/U]
Model: Lenovo IdeaPad Gaming 3 15ARH7
Motherboard model: NM-E211 Rev: 1.0
Schematic, Boardview, & FlexBV Free - Attached


[U][B]Problem:[/B][/U]
The computer does not charge the battery or power on also does not power on with power adapter only. Battery have no charge on it at all (reading mV on battery charge). When connecting the power adapter...

[larSS]

Hello everyone! Please, help me to find out missing elements and their value. I think there should be 2 resistors or 1 capacitor and 1 resistor. Place near the FBVDDQ coil [ATTACH=JSON]{"data-align":"none","data-size":"medium","data-attachmentid":3262143}[/ATTACH]...

[flusher]

Hi there, if anyone could have a quick look I am missing 3 components on bottom side of PCH
Mobo does not post (reset pulled down, no vcore etc).

Thanks in advance

[kaydee]

I recapped the power supply recapping the Power supply with Toasty's sketch (replaced all Shotgun, as well as "Other" caps besides C4+C5+C37). Somehow the PSU turns automatically on when I insert it in the socket. Did anyone else encounter this problem?

I would be really thankful for some advice.

Best,
Koray

[salawayon]

anyone could share a schematics or boardview for the said model? No LCD Backlight is the main issue. tried already with other lcd.
UX21E REV 3.1

thanks...

[kaydee]

Hi there!

I took my time to identify the soldering points for the capacitors. This should be used as a reference with no guarantee!

Best,
kaydee

[the Benninger]

HI Folks, I have a problem randomly a BSOD screen appears in the event viewer indicates KernelPower failure, discard the source/memory and SSD, only the battery is in bad condition, it will be possible that the battery is causing this BSOD event , I mention it because the times he gave BSOD he happened to have the battery installed, and last Friday it ran all day without the battery installed and didn't generate any events
At the moment I am checking the mosfets and voltges in general everything seems to be perfect on the main board



Vostro 14 3468
CPU: Core...

[evilkitty]

I like to get one on mouser/digikey along with a order i plan to place
i have 2 breadboards one from ebay w/ horrendous contact resistance (to the point on NC)
and another from ali-express that feels like i am going to break my micro controller putting it into the thing

any suggestions? (note that i am not spending $50 on a 3m board)

[obelix24]

Hi All,

i got one Macbook a1534 boardnumber 820-00244 that is taking only 5V 0,2A

I've tried to replace 3x CD3215B01 chip but it's still behaving same ....

On the board there was blown L4804 so i've replaced it.
when power is connected 5V 0,2A
PPBUS_G3H - 0V
PP20V_USBC_XA_VBUS_F - 5V

I've tried to remove F7040 as mentioned here
[url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/102582-macbook-a1534-820-00244[/url]

...

[GeryMix]

Hello everyone!
I have a surface pro 4 (1724) with corporate management set up (in this case, I understand it's called SEMM). In the operating system installer (Pro version), after connecting to Wi-Fi, it asks me to enter the company system. If I don't sign in, it won't let me continue (similar to enterprise enrollment on chromebooks). This can be avoided if I install the Home version instead of Pro, and then upgrade to the pro version, but this is not very elegant. I would like the machine to be as it should be in factory condition. That's why I would like someone to remove this restriction...

[bxox0000]

Hi. I could not find a more related and active thread for Alienware 15 R1. Currently have BIOS password locked so cannot modify and save changes. Service tag: 3V69L32, Express Service Code: 8415323390. Please help me. Thank you for your time and effort!

[unimatrix93]

Dear forum, I would like to ask some help identifying the backlight circuits resistors to limit the ampere to the backlight leds.
The power supply is a BN44-00852 and I want to decrease the backlight to increase the lifetime of the LEDs.
The TV is pretty much always on, used for CCTV cameras.

I suspecting R9838 -> R9841 resistors but I'm not sure. Thanks in advance!


[ATTACH=JSON]{"alt":"Click image for larger version Name:\tsamsung_bn44-00852_psu_sch_full.png Views:\t0 Size:\t443.0 KB ID:\t3261858","data-align":&qu...

[pc boy]

Hi everyone. An HP X2 1012 G2 came the other day. The problem was that the device drained the battery while off. I checked and saw the current is 0.2 before start. I went and checked parts on the MB and saw that the JHL6340 IC that is responsible for controlling Type-C gets hot. Everything worked fine and I checked charging and data of type-C both were OK. I went ahead and replaced the JHL6340. Now it does not get hot, no current before start, charging is OK, but the data of type-c is lost. I mean any type-c device like flash memory or hdmi adapter etc. do not work. I tried another jhl6340 and...

[Titanite]

Hi!

I'm looking for the Boardfile for the HuaQin NB2672 PCBA (Acer Swift 3X S3X SF314-510G), specifically the Allegro .brd of it and not the .cad.

Attached the schematic of it in case anyone needs that.

Cheers,...

[GeorgeR]

I have an Lenovo l340 that has two missing caps on the motherboard. How can I find the value of the caps so I can replace them.
thank you in advance.

[sohail5307]

Device: LAPTOP Brand: DELL
Model: PRECISION 7560
Board: GDB55 LA-K621P
REV: 1.0(A00)
Request: BOARDVIEW and/or SCHEMATIC...

[Rob Thomas]

Hi Ladies & Gents,

I am currently playing with and old Hikvision DVR for which I do not have the password. Is anyone able to help with the password on this or able to provide a bios flash image without a password?

I would be interested in learning how to find where the password is stored in the bin file so that i know how to do this sort of thing for myself.

DVR Details are:

HIKVISION DS-7204HQHI-SH

DS-80197 Rev 1.0

Serial Number: 556775917

Bin file from the bios chip (Winbond 25Q128FVSG) attached....

[SGVsbG8sIHdvcmxkIQ]

Hi,

BIOS update bricked my laptop - after restart the was a prompt to Proceed with ROM flash or Abort. None of 2 options worked - upon restart the same prompt shown.

I downloaded [[I]BIOS update[/I]].exe file from Lenovo Support > extracted [[I]firmware descriptor[/I]].fd file > renamed it to [[I]correct crisis file name[/I]].bin.

With crisis file on USB drive the Proceed with ROM option launches recovery - after displaying the current and the new BIOS version, the process terminated immediately with validation error:

[I]Not allow flash....

[longnvu]

Received a M16 GU603HE-211.ZM16 SN: M8NRKD03147131E that the owner tried to flash the bios himself. Laptop will not do anything. I've uploaded the bin file from the bios chip.

Any help would be appreciated....

[90Ninety]

So I purchased a faulty GPU on ebay Palit RTX 3060 .. It had a broken fan ( it did not spin at all )

Long story short , is the PWM control of the Card seems to be intermittantly faulty

Long story
I replaced said fan , seemed to work for a while , until randomly the fan starts spinning at 100% ( around 3.2K RPM ) for no rational reason ( temps and performance are ok ) . Now fan spins , though several times a day the fan decides to run at 100% for several minuites a time .. Then resumes normal operating ..

bear in Mind the card can be cooled sufficiently...

[parahandler]

Hello! I've had a bit of an issue with my X395, I think during a BIOS update recently, something interupted it; I'm not sure exactly what but it no longer posts.
- Powers on
- Power light/Charging lights
- CPU heats up, fans whir up
- Black Screen
- No sign of life.

I've done the LCD test, so I know the display functions.

I feel the BIOS is somehow in a corrupt state, I'm not looking for a PW removal or anything like that, but rather how a path in which to install a working BIOS. I have the CH341A to dump/write, so I've attached a copy of...

[artasdmc]

Hey. I've read plenty of discussion on AVforums, reddit, LTT, and etc.
Has anyone succeeded with VRR? Anyone managed to use a different TCON board for possible VRR?

My B7 has 16K hours and basically no burnin still, very slight on yellow, unnoticable in regular use.
The bummer with it that it's HDMI 2.0b, so can't even fully utilize the panel, at it looks pretty much identical to the C3 that I've recently fixed by replacing liquid damaged components (Besides T-Con board, as the replacement one gave me vertical banding. Mobo came with release firmware, even updated to 3.20...

[rumpumpel1]

I have a ThinkPad T460p that keeps restarting instead of shutting down. The culprit is the LAN: if it is disabled in the BIOS, the problem is solved. I have already replaced the LAN chip (WGI219LM) twice, done CleanME, flashed another BIOS. Unfortunately all without success. What else can I check?

[Jeroentje]

Hi

I try to repair a asus Asus X571GT (DA0XKTMB8C0) no power no lights.
I saw a burned (small hole in it) chip (JW10F) proberly a TPS22976DPUR, I removed it, now with power connected the laptop turns on and direct off again, power led and fn will light up.
I found on a donor lenovo board a G2898KD1U (wa9y), looks the same ..
Result is still the same, turns on and direct off again, first attempt is with backlight on all other direct attempts are only the power and fn led.

Could it be the chip is to diffrent to make the laptop work again ?

...

[fredyjbi]

Please help sir, I included a schematic of the T490 nm-b901 completely dead, after I checked, I lost the voltage -PWRSHUTDOWN 0v which should have been 3.3v, which was produced by the BD4179MWV chip, thank you

F9502 20v
UTE1B
pin 44 TE_BAT_VOLT 12v
oin 43 3SW_OFF# 19.8v
pin 45 VREGIN20 19.8v
pin 47 VCC3SW 3.3v
pin 55 SHUTDOWNIN# 3.3v
pin 54 TH_DTCT 3.3v

-PWRSHUTDOWN missing 0v resistance 380k
R9512 pin 2 3.3v pin 1 0v resistance 380k

[url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-el...

[ongobongo]

Hi guys,
I have another problematic laptop here, a Dell Latitude 7420 2-in-1 with touch display.
Motherboard is Compal LA-K371P Rev.3.0.
The laptop has a strange display problem, see attachment for more details. This problem is not windows related, as soon as you start the display has those lines even in the Bios. If i attach an external monitor, the lines do not appear there.
I was able to get my hands on a second display, but the problem persists, so it seems to be something different.
any ideas?...

[hani55]

PLEASE BROTHERS I NEED DUMP BIOS

SN SVT511059

MAINBOARD :CP562910-Z3...

[PC-maniak]

Hi, I'm asking for help identifying the component.. the markings on the smd are totally destroyed and boardview didn't help me much.. I didn't find the schematic ....Thanks!

[jm1234]

Hi,
solder joints on heat sinks - how much do they matter? Could poor joints on heat sink cause issues if they are not properly joining to hot ground?
I'm looking at power source module of Panasonic plasma TV and I see many of these having visually poor quality, but could they matter? In general I would guess no, but I saw a video where someone was stressing out the importance of tightening the screws when fastening the power source board specifically for the ground to be connected properly.
Thanks

[Siddig]

HI
NEED BIOS DUMP FOR:
[COLOR=#e74c3c]SAMSUNG NP900X3E-K01US AMOR2-13-MONO REV:1.0[/COLOR]
THANKSHI
NEED BIOS DUMP FOR:
[COLOR=#e74c3c]SAMSUNG NP900X3E-K01US AMOR2-13-MONO REV:1.0[/COLOR]
THANKSHI
NEED BIOS DUMP FOR:
[COLOR=#e74c3c]SAMSUNG NP900X3E-K01US AMOR2-13-MONO REV:1.0[/COLOR]
THANKS...

[stj]

just got a late 90's one.
just a warning to others.
unless you intend a complete teardown and rebuild - dont buy one.
because to remove the main board that fills the case and goes under the tube thats what you need to do!!
even the fuse is under the tube!

oh - and it had a RIFA in it....

[Patan]

Need help here...
I'm new on the forum and I'm not professional in electronics so i ask sorry in advance for eventual errors...
As title says, i have a LA-H323P dead.

Now, little background.
The computer was working fine, just seems that the cable of screen was dying because it had the classic color problem, sometimes green, sometimes violet, sometimes perfect, but anyway working.
When i opened it the battery was so fat that was seriously near to explode.
So i removed the battery... and turned on the notebook... that was, again, working perfectly fine....

[LouisLP]

Hi, I have bought a non working PS4 pro. The seller said that the PS4 was working, he changed thermal paste and now BLOD for 5-10sec.

While inspecting the board (NVA-001) I found this component that was damaged (see photos).

I was wondering if someone knows what component it is…

Thanks

[matsnst]

hi.

i'm searching for a Boardview for an MacBook Air 15 (M2) - Model A2941 820-03160-A

thanks

[corrize]

[FONT=Calibri]Hello, do you know what is this chip or where I can buy it please ? This is a main chip managing voltages : battery voltage in input and outputs are other lower voltages needed by camera.[/FONT]
[FONT=Calibri]I have 6-7 boards with this dead chip, but I cant find replacement parts. There is no brand, the number matching with nothing. The top is brilliant and conductive material (yes and it is ground). It's not a plastic like other chips.[/FONT]
[FONT=Calibri]In anothers nikon camera, there is this same chip, with differents numbers like 23250.[/FONT]
[FONT=Calibri]Do...

[trepachka]

I am trying to convert a HP EliteBook 840 G7 notebook from a non-touch to a touchscreen. I purchased a complete touch LCD assembly with a screen/back cover/bezel/video cable and swapped it out with the original non-touch LCD assembly.
The screen works but the touch does not. I know the new LCD assembly is completely functional because we tried it on a similar touchscreen EliteBook 840 G7 and the touch works there.
I contacted the seller and he said screen conversion like this will not work due some difference in the motherboard for non-touch and touch capable EliteBook 840 G7.
...

[anikin73]

Hi any kind soul have this board view and can share ?
I have h110 plus. But I need a h110i.

thanks

[bohaboha]

Everything works as it should except that it is too dark screen image and the backlight is blue is it normal with bleu backlight ?
What Can I Do To Get Brighter Image...

[harp]

I noticed that in schematics is used random triac simbol, where on gate side is T1 or T2. I know it pass current in both direction, so generaly it is not important, but ask for consistency to learn correct. Why is developed this two way of marking if symbol is standarized?...

[bonsale]

Hi!

I've got a few identical HP EliteBook 1030 G4 laptops. Most of them I succeeded flashing, but a few went wrong. Therefore they're BIOS is now corrupted. Here is a dump of a correct/working bios (no password, fully working, exact same ram, display, LTE, WIFI etc etc).
I tried cleaning the ME region myself (see attached file), but i think that's wrong, because it doesnt start with the correct amount of zero bytes...

Of course, just flashing those binaries on a different laptop will result in HP Endpoint Security controller problem and resetting the bios after...

[abajor]

Having this very weird issue.
The owner of this laptop complained about screen being intermittent when opening and closing, and has been using the laptop on a thunderbolt video connection since the screen failed.

I swapped with a working screen from an A2141 waiting for parts.

The Os exhibits this weird behavior where it boots to to 1/3 the status bar, then it makes the boop sound. It's at the log in but for whatever reason the desktop isn't loaded.

The laptop boots fine into recovery mode. I updated from Monterey to Sonoma and the laptop still has...

[Japanac]

Need [B]schematic,[/B]there is no picture or sound on the HDMI connector,everything else works normally.Need [B]schematic,[/B]there is no picture or sound on the HDMI connector,everything else works normally.Need [B]schematic,[/B]there is no picture or sound on the HDMI connector,everything else works normally.

[Francisco.s]

Hi, have a MSI motherboard 16J91 with no image and only consumes 22 mA when power on.

There is no voltage at pin 8 of bios chip in stand-by, but as soon as I push the power button, pin 8 and all other pins of bios voltage rises to 3 volts, but no pulses are present.

No voltage on PM_SLP_S5# or other PM_SLP.

KB9028Q has been replaced and programmed without any issues, but pulses in bios still missing. (measured with dso)

Can pch be blocking bios pulses?

Thanks for your help....

[tnap1979]

my g513rc was doing a windows update and it had a bios update in it, the system rebooted, was doing something rebooted again, and hasnt functioned properly since..
ive researched reparing my bios, i have a ch341a black with 1.8v adapter, ive made 4 seperate dumps at different times for redundancy...
i have a feeling my bios is corrupted and preventing my system from booting..
does anyone have a g513rc bios dump i can test ???
or is anyone willing to help me out in another section with fixing my dumps ??

[survivalbloke]

I downloaded a BIOS file from Lenovo and once I extracted the actual BIOS from the executable, it is 16MB in size, but my IC(Winbond 25Q80DV) is only 8MB in capacity. I have read you can trim the BIOS file with a hex editor but I can't find any instructions on specifically what you will remove.

[J Peltonen]

I cant create a flashdrive for unlock .bin because i cannot install software to make one cause its laptop i bought online but its locked to root dont own admin user for OS which blocks my intend to install any setup to start unlocking bios without having dells tool in pre installeded folder so can someone share me unpacked client to dell laptop what is to make biosflash for usbstick??

[zaliuk]

Hello, could someone spare me a Schematics for ms-7b58 rev 1.0 board MSI Z370 Gaming M5, got shorted two rails - 5v. and 3v., trying to find the cause.
Thanks in advance ...

[ballu]

I need schematics and board view for these models. Please anyone got these files.
Thanks

lenovo miix 310-10icr boardview
lenovo miix 320-10icr boardview
lenovo d330-10igm boardview

[SMDFlea]

Compal LA-E292P...

[rayshine03121408]

Good Day Masters! Anyone can repair my BIOS Bin for ASUS TUF FX506?

Model: ASUS TUF FX506
Board Model: DABKXBMBAD0 REV.: D
S/N: L8NRCX03B357346

Thanks in Advance Masters!...

[pietrek1133]

Hi, Lately I bought an Razer Blade 14 laptop, from 2016 (RZ09-01652). Unfortunetaly, someone probably practiced soldering on it and there are few lost components: L1, U5 and PU7. Model of motherboard is Betty_R4 MB V3.0 20151216. Could someone check the names of the components for me? Thanks in advance.

[прямо]

Anyone is familiar with a TRIAC circuit?

I came across this schematic, and I built it, but I can't seem to figure it out why I'm getting a low AC voltage output at the TRIAC terminals.

With 230V AC hot side at the TRIAC MT2, I measured 60V AC between MT1 and neutral side when the comparator output LED indicator is on, and 20V AC when it is off.

Same result if 230V AC hot side is at MT1, and I measured between MT2 and neutral side.

My heating element doesn't work with 60V AC. It's not even getting hot and the thermocouple amplifier output is a...

[NConstantinou]

please someone help to identify part PQ512 . IT IS A SMALL mosfet and is burned out
thanks

[PacoGT]

HELLO I need the bios file por this amd hp, the motherboard is on buy no video, and no voltajes in the processor
i think que bios is bad or corrupted
if you have the bios file backup thanks
and my backup here [ATTACH=JSON]{"data-align":"none","data-size":"full","data-attachmentid":3260720}[/ATTACH]...

[rayshine03121408]

Hello Masters! Anyone can repair my old BIOS Bin?

Model: ASUS ROG GL502VT-BSI7N27
Board Model: GL502VT Rev.: 2.0
SN: GAN0CV11V376425

Thanks In Advance!...

[DynaxSC]

Hi Folks

I got an ASUS ROG MAXIMUS Z690 HERO mainboard with missing components on the backside near the HDMI output.
Unfortunately there is no documentation available nowhere for that board, I did also not find any similar ASUS board design. Even Russians nor Chines have anything available here (nor BV, nor schematics), so only way to discover the parts is from a real physical board.

On the picture left the area where the missing componets are is shown.
On the right picture the detaileed view is shown.
It seems that a double mosfet is missing, probably...

[Gecko-EC]

Good Day to All,



I hope there is someone that can assist me with my GPU. Is does not startup at. Zero fan spin. GPU not heating up at all. I have checked all fuses and voltages that I can find. The one problem (if it is even a problem) is a reading that I am getting off a mosfet. Between Pin 1 of L1014 & Pin 4 of Q4026 ( PS_VDDC_UG5_R) gives me a reading of around 645-650 ohms. Between Pin 1 of L1012, 1013, 1015 and corresponding Pin 4 on Q4020, 4023, 4029 all give a reading of 7.73kohms...

[Adrole]

Dell inspiring 3582
tag 9cwq1w2
serve code 20371598354