Lenovo Yoga No primary Screen

[Noursa]

Hello

I'am a beginner in electronics repair and i got some trouble to find what's goning on a computer. It is a lenovo yoga C940-15IRH laptop and the screen doesn't work anymore, but that work on an external one

the screen seams to be hard to unbuild properly so i want to test it by other way

how can i be sure if the signal is really send to the screen ? i did some check on screen connector on LCD1 got 19v and on MiC1 connector on the other side of the screen (dunno if it's for the screen itself or other thing) got a lot of 3.2v pin

did u...

[MeetingIncapable]

Hello,

I am new to repairing computer electronics, so excuse any mistakes I make.

A friend of mine had a broken graphics card (MSI Radeon RX 5700 XT MECH OC) and gave it to me. It does not power on or show any signs of life.
I identified what looks like the remains of a blown capacitor at the bottom of the board (see picture).

I wanted to replace the capacitor, but I have two questions:[LIST][*]Does this repair have a chance of working? or is a blown capacitor a sign something else is wrong?[*]How do I determine the rating/value of this capacitor?...

[youcefinfo]

Hi,

I need Bios for Dell Optiplex 3050 Micro.

[B]sevice tag number:J9JNDN2[/B]

does anyone have?

thanksHi,

I need Bios for Dell Optiplex 3050 Micro.

[B]sevice tag number:J9JNDN2[/B]

does anyone have?

thanksHi,

I need Bios for Dell Optiplex 3050 Micro.

[B]sevice tag number:J9JNDN2[/B]

does anyone have?

thanks

[labello]

Hi guys my friend gives to me this thing, it works but the selector on of music is broken , I tried to do some research on Internet to change it but I didn't find anything. I hope that someone can help me to find it thanks all for the reply

[joaopedrogallo]

Hi there! (I hope i'm doing the right way to ask this)

I'm working on a Dell INSPIRON 15 7559, with service tag CZ4X2J2.
Im sending both BIOS and EC .bin file and ask if someone can Clear ME it for me.

I guess it's only BIOS to be cleared, but I'm sending both.

It's taking too long to show the DELL logo.
I took this files from another original Dell motherboard which stopped working.

Best regards!
Thank you in advance!...

[CPRMatt]

I have a PS5 in my shop that beeps when the power button is pressed but the light does not turn on and the fan doesn’t move at all. I tried replacing the power supply because it had some roach bodies in it but the rest of the device had no signs of infestation, and it does the exact same thing. Then I tried replacing the HDMI chip (MN864739) because I saw somewhere that it could be the culprit but still no change. Does anyone have any other suggestions or things I should test on the board or is it likely dead? Thanks!

[b4rdock]

hi, friends can heko unlock this [B]Vostro 13 5310[/B]

ST:4GV8MG3
have password and computrace active


regardshi, friends can heko unlock this [B]Vostro 13 5310[/B]

ST:4GV8MG3
have password and computrace active


regardshi, friends can heko unlock this [B]Vostro 13 5310[/B]

ST:4GV8MG3
have password and computrace active


regards...

[Al-Umar]

Please can someone tell me the chemical that can be apply to dissolve glue that used to hold the type C chip and SSD storage chip MacBook 2017 touchbar on the board.
Please i need a prescription of that chemical. i will be very glad if someone can help me out on that

[Ismail-U50]

Please can some one help me repair my bios
On but not display, it blinking 2 orange 7 white light by the power side led

Dell Inspiron 7306 2-in-1
Service Tag: 626BS93
EX: 13192253895...

[ZockeX]

Heya! I have a Google pixel 6 with some important data on it, and since it's the new Google SOC I'm not really sure if it's possible to solder the storage to a new board.

If anyone has or knows how to get a Boardview of the pixel 6 (not pro) that would help me immensely.

Best regards, Alexander Dorn.

[Chapita]

Hi team,

I bought a lenovo thinkbook 14-iil with a core i 5 processor, Radeon graphics chip, board number: DALVACMB8DO - REV D from an auction. It does not have a bios chip and my guess is that someone disoldered it, so I am planning to buy a new replacement bios chip but I do not know how to reprogram the chip, can someone assist please

[Caspar Love]

Was wondering if anyone would be able to help with something for a friend. They're looking for a circut diagram for the power supply of a motherboard for a Acer Swift Go 14 laptop, model number N23C6 laptop. I've attached some images of the board and was hoping if anyone could direct me to something that would help?

Thanks in advance

[claws77]

please provide schematics and board files
google search for part number shows some other laptop versions sf314-XX also use this daughter board.
part number 448.0E706.0011

[Issa malik]

Hey everyone, I've had a dead hp g62-b55se for a while that wasn't fixed and i would like to take a look at it... board: 615382-001

[rheyntau]

help pls..need schem and boardview for this laptop
HP BOARD # LINDEN-6050A3147201-MB-A01 (A1) ..

thank you in advance...
(sorry for my bad english)

[jrutla2]

Hello BadCaps Forum! I'm new to the group and hope you guys can help me with something. I have a 2017 Apple imac A1419 board # 820-00609-A that i'm trying to identify a capacitor failure on. The capacitor is a tantalum 68 C79. See pic attached. I've tried to figure this out using the web and unfortunately can't find the information. Can someone tell me what the Capacitance value, voltage, etc is for these 68 C79 caps are? Where could i pick up a replacement? Thanks in advance!!...

[smaniak]

Hi I have a touch screen monitor. It work fine for many years, but now It shows its age!
When I turn on the monitor, white lines appear on the display. They jump for a few seconds and then the display goes off.
Can you give me some pointers on where to start with the diagnostics.
There was a trail of dried light brown liquid on the board that the display connects to, as if a capacitor had leaked, but I couldn't find one. I cleaned the circuit board and resoldered the legs where this liquid was, but to no avail....

[Felipe_Serra_83]

As the title says. For programming with [B]CH341a MiniProgrammer[/B]

Thanks all!As the title says. For programming with [B]CH341a MiniProgrammer[/B]

Thanks all!As the title says. For programming with [B]CH341a MiniProgrammer[/B]

Thanks all!

[Sergio Kub]

Hi there,
I have a Mac on the bench that wouldn't turn on, it didn't have PPBUS_G3H voltage.
I replaced the IC U7000, ISL6259 and the green light came on, the cooler turned on and showed the video, but I noticed that PPBUS_G3H is at 9.45V and the U7000 is heating up a lot.
I took resistance measurements for the earth and did not find a short circuit.
I measured the resistors connected to the U7000 and found no different value.
I searched the Forum and didn't find anything like this.
Can anyone give me any advice about this problem?
Thanks in advance.

[LunarEklipze]

I can't seem to flash a new BIOS normally with the .exe file provided by Lenovo, so I'm looking for help. Every time I try I get an error message that reads "New BIOS region (1000000h) does not match with current (C00000h)"

I've extracted the .bin files from both the UB1/UB2 chip (8MB) and also from the UB3 chip (16MB) using a flash programmer although I am not sure if both need to be flashed or just one. Can I get help getting working .bin files from the latest BIOS version for each chip respectively to see if that works? I've extracted the bios.fd file myself and then...

[the Benninger]

Dear friends of the community, I hope you can help me in this case, this notebook came to me with the fault that does not turn on, when the source is connected it indicates that it is charging, when you press Power 2 or 3 seconds pass, when it only steps once on the Power LED, that's all the fans do not turn on it does nothing more than charge the battery.

I've already tried a BIOS from another post on the same forum and unfortunately it keeps doing the exact same thing here's the data:

avell A62 LIV
RTX2060 (6Gb)
SN: AVNB2051108
MoBoSn: GK7MR0R11T02203710291...

[Bloopeta]

Samsung UE55JU6800K with no image on screen.

I have had this TV many years without fault, however aprox 6 months ago I fitted a new set of backlights as some of the lens caps had fallen off.

Was working fine, until 3 days ago, when watching TV the screen just went blank (still illuminated)
I turned the TV off and left it around 12 hours, and when turned it on again it seemed to work perfectly again. After around 45 mins the screen went blank again.
Left it off overnight and turned it on, and the Smart TV logo came on as normal, then screen went blank.
...

[spleenharvester]

I've had this [URL="https://www.panasonic.com/global/energy/products/eneloop/en/lineup/charger-bq-cc63.html"]Eneloop charger [/URL]from new, and it works fine but has always made a really irritating ticking sound roughly once per second when more than one battery was inserted. I found the noise to be coming from the OB5222AG PWM DIP-8 IC. I tried replacing it with an identical part - the problem persists but rather than a ticking, it now sounds like a squeal. The problem is there are no spec sheets for this IC [I]anywhere[/I] and no information besides it being a PWM IC, so I have no...

[lwc198]

I have tried different ways to do it myself but failing

Its a Elite DragonFly

SN: 5CG1120KDW
Product number
6FW22AV

Any help would be appreciated...

[dalish]

Hello everyone. I am looking for MSI Raider GE78HX 13VH-051UK board schematics. Does abybody have it?

Many Thanks

[Serbentas]

Hi,
[B]820-02382 [/B](MacBook A2485 16" M1) not detecting battery. Battery sign has cross. However it works from battery but not charging and reporting incorrect data like charge remaining.
Any one any ideas please? Also fans are high/full speed

Hi,
[B]820-02382 [/B](MacBook A2485 16" M1) not detecting battery. Battery sign has cross. However it works from battery but not charging and reporting incorrect data like charge remaining.
Any one any ideas please? Also fans are high/full speed

Hi,
[B]820-02382 [/B](MacBook A2485 16"

[mohi@rolyana]

Dell 3446 laptop power on but no hdd or dvd/rw show help

[battery.12v]

Hello guys, Asus G512LI, came with 3.3V drop down immediately .... 5V was stable ... after search and work found that +3VSUS_MUX is the issue (caused by U4701A TUSB1146RNQR) , left off the ic .. 3.3V came up again stable ... after power on laptop turn on for 3 seconds and power off ... VCCcore raise 0.9V for 1.5 seconds and drop down all other voltages do same thing ... Ram voltage , Gpu voltages, concerning VCCGT 0V all the time

[benwaterson]

Hi All

Been a while since I have been here, and a bit rusty.

I have the above laptop motherboard that was working and now the charging circuit is faulty.

Have 19v in fine until it hits PU4403 - not shorts I can see and thermal cam reveals nothing.

I have swapped out the ISL9538 and also the two mosfets (PU4403 and PU4405). Have 2.8v at the power switch, which pulls low when pressed - charging light comes on and goes straight off

Below are measurements (pin names are per the datasheet for the ISL95338 (couldn't find one for ISL9538,...

[unimatrix93]

Dear forum,

I'm stuck with this old TV unit.
PSU: 17PW04-1
MB: 17MB62-1
Symptoms:
- Blue LED constantly blinking when connected to AC.
- Only sigh of life is beeping when touching the capactive buttons on the front.

Diagnostics so far:
Checked the PSU output voltages:
12V present
5V present altought its only around 4.2V
3V is present measured 3.4V.

I check TP 202 which is for the short circuit protection: 0.606V on diode mode

Since I met with some vestel models before with similiar symptoms...

[Pasglop]

Good morning
I am encountering a problem on an Asus X421EA card which no longer starts; I checked the voltages, the 5v and 3vd are missing, has anyone encountered this problem, I have been looking for several hours without finding the source of the problem. Thank you!

[clrscr]

please help me unlock password bios panasonic CF - SV1RDLVS
SN: 2BKSC68044
THANKS!...

[huzo]

First of all i haven't found the board number other then FLESSY2 G4227A A4227A etched under the DC in connector...

The problem is laptop does not charge the battery...Laptop works on battery and work on charger, but doesn't charge the battery... when off, it pulls 0.13A ,when turned on it pulls around 0.500A and has spikes 0.6-0.8 A when booting, i found that ISL9238H is the charging regulator and i replaced it with ISL 9538H and it's all the same...i checked all the passive components and all seem to be ok...

Anyone have an idea what to look for next? The battery...

[andresi]

cant display, can someone repair my bios?...

[hairulole]

Hi everyone, im looking for Asus X409MA rev 2.0 boardview. Is anybody have it? I had found Russian language website which is i couldn't understand. Hopefully somebody can share it with me. Thank you very much at first.

[wolfrose]

I received a .cad file for my laptop but don't know how to open it.

Any suggestion ?

[Xrious]

Got a TH-55FX600 that is showing no signs of life.

Outputs from the P board look good, but no 12V on the A board.

Very similar to [URL]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-tvs-and-video-sources/110001-panasonic-tx-65fx623e-identidy-ic[/URL] but where Tibd has 3.3v on the EN pin I have nothing, no voltage at all.

Looking at the diagram for the IC I can see the enable is W_OPCTRL9, but I can't find a source for this, can anyone help please?

Stu

[ATTACH=JSON]{"alt":"Click...

[Josuerepara]

Does anyone have a 2twtt$ja bios. it's 1mb pls

[maleksa]

My Zoom R16 would not turn on. I checked for voltage rails and I found that 2 out of the 3 inductors had voltages.

L19 read 3.3v
L10 read 4.5v
L11 had no voltage readings

I need help in identifying IC10 which could be the problem. Really appreciate any help on this.
...

[Kuroneox]

Sorry for the inconvenience, I have a problem with an Asus, it turns on, it tries to start or the image freezes or it restarts, it doesn't let me put a system on it or put a disk with a system on it, it restarts them all, by chance I would have the Bios for this model

Asus Vivobook 16
Model x1605v
Model motherboard x1505va r2...

[VoicesFYC]

Good Afternoon Gang Would Any of you Wonderful techs By Chance Have Any Schematics And BoardViews for the Zen AiO ZN240IC Mainboard? any and all revisions happily accepted please Thank You greatly !

Daniel.

[gjgib]

Hello, need help identifying a DIODE that's right at the start of DC_IN line in this small IO BOARD. (DR1 08530-2 48.4AQ03.021).

[URL=filedata/fetch?id=3263943&d=1714682294][ATTACH=JSON]{"alt":"Click image for larger version Name:\ts-l1200.jpg Views:\t0 Size:\t45.5 KB ID:\t3263943","data-align":"none","data-attachmentid":"3263943","data-size":"thumb"}[/ATTACH][/URL]

I have the [B]boardview[/B] for this small board [URL="https://www.badcaps.net/filedata/fetch?id=3263942"]08530-2.rar[/URL]...

[shukys]

One member post a photo of a boardview for this model it means it is available, unfortunately he is banned so can't text him, tried to find everywhere but no luck...

[mrgumshot]

Hi all,

I've got a Lenovo ideapad gaming 3 15IMH05 with a black screen issue. I've tried a BIOS file which i saw in another post and changed some things in a Hex editor.
So i transfered the DMI info from my original BIOS to the one i got from the post. Flashed it to the chip and the laptop was booting again but very slow post.

After a couple of boots it went back to black screen again. Tried to flash the same BIN file on it which i used before but its staying at the black screen now unfortunately.

I hope someone can help me out. Attached is my [B]ORIGINAL...

[CyTECH ELECTRONICS]

I'm middle of doing this console and just wanted to ask about a component if someone seen one of these.It looks like a fuse or a coil but I measure nothing no resistance or anything.It's related to the hdmi section and connects ground to an ic.I'm a bit confused at this point.Anyone can confirm what it is?Please only need advice from who actually worked with one of these.Thanks

[tyl85]

Hi, i have a lenovo V15-ADA
with broken onboard ram, i desoldered those ram chips and now i got Black screen, obviously you say 😂

Can someone disable the integrated ram by bios? this is original dump and motherboard details
thanks in advance...

[corrize]

[FONT=Calibri]Hello,[/FONT]
[FONT=Calibri]I have different sort of those little BGA chips (step down DC-DC, power management battery, …) I replaced 10 on differents mobile devices (no schematics) but I noticed often they can be dead but never shorted. I see some signs : burn marks, resistance drop by comparison with good board (40 KOhms to 1 KOhms for example)… but not easy to be sure of the diagnose. Because I can't access on all tracks (balls) with the meter.
Sometime, I know only after replacing chips.[/FONT]
[FONT=Calibri]Do you have tips for diagnose please ?[/FONT]...

[jaroslav.psenicka]

Hi all,

I have a Lenovo Yoga 13 Panasonic here, when powered[LIST][*]both fans spins (the sconds starts with a bit of a delay), no image neither on HDMI nor the display[*]most voltage rails seem OK (see image below, red labels)[*]resistnace to ground mostly seem OK as well (blue labels)[/LIST]the only suspicious is the 0.0V rail (2nd from left, top row)[LIST][*]the resistance to ground is rather low (1.9ohm)[*]when injecting the voltage (1V), it consumes around 200mA, seems OK to me (?)[/LIST]also tried new BIOS, no change
I can't find a schematics for the board - can some of...

[sertac545454]

[B][URL="https://www.asus.com/tr/motherboards-components/motherboards/prime/prime-b650m-a-wifi-ii/"]PRIME B650M-A WIFI II[/URL][/B]
I NEED THE BIOS DUMP FILE. BIOS CRASHED
[B][URL="https://www.asus.com/tr/motherboards-components/motherboards/prime/prime-b650m-a-wifi-ii/"]PRIME B650M-A WIFI II[/URL][/B]
I NEED THE BIOS DUMP FILE. BIOS CRASHED

[obelix24]

I have one strange issue with Macbook Pro 13" A1706 (touch bar) 4 TB ports
Issue is that all 4 ports are working but on one port only one side (when i rotate connector 180 degree there is nothing (ampmeter is not turned on at all) and charger (original apple) is put to protective mode, I have to unplug USB from the power brick to enable it again.

I've tried multiple USB-C ports (one one side all ports all sides work when i reconnect it to other side both ports work but one only on one side)

There is no issue problem on the board (no liquid damage, no damaged...

[MarkIV4]

Hi everyone, I hope I'm posting this in the right place. I'm new to this forum and I'm hoping you can help me out.

My Samsung Galaxy Book suddenly stopped working and won't turn on at all. I noticed that the component in the attached photo looks burnt out. I think it's a voltage regulator, but I can't find any information about this IC online. I've searched using the code on the chip, but I haven't been able to find a replacement....

[erico]

First of all, ive veen reading these forums for some time and its always veen very helpful, so i thank you all for this amazing comunity.

I have a lmq-2 13268-1 motherboard from a lenovo x1 carbon 3rd gen. And the MX25l12873f (U49) bios pin 8 is not getting voltage.

So far these are my diagnostics:

When given 19v trough power adapter, consumption reads 0.003 amps for about 5 seconds then nothing.

When power button pressed same result, and i get three green blinking lights from the pwr btn led. But foesnt turn on.

If i plug the...

[barber]

我有一张华硕tuf-gtx1660-o6g显卡，自用突然不显示黑屏，好奇我想修一下，想找个板视图，有没有好心人可以给我一份，谢谢！板号CG165PI R1
I have an ASUS tuf-gtx1660-o6g graphics card, and suddenly it doesn't display a black screen for personal use. I'm curious and want to fix it. I want to find a board view. Is there any kind person who can give me a copy? Thank you! Board number CG165PI R1

[LarrySabo]

This laptop powers on, keyboard lights for 1-3 seconds then powers off with charger LED flashing. I have the boardview and U3050 (9661A) or connected components have a short. I'm cautious about injecting voltage to locate the short so a schematic would be helpful. Attached is picture of the area....

[garretofriviaaaaa]

Hello, Basically a customer tried updating his mini PC using a USB stick but it bricked the computer. I've tried flashing a new chip with a CH318A programmer using neoprogrammer and a ROM file from minisforum's website. From what I have read on the forum here, there isn't a readily available guide on how to serialize an existing bios to the motherboard. I have a dump from the original BIOS chip, I did an additional one and did the fc /b command to make sure no discrepancies were found. The machine model number is Minisforum UM780 XTX, machine serial is MC495UU78XQQMQA0089, Board Serial is F78SD784048A1050804....

[Mufasa]

Hello everyone,
I was wondering if anyone has a source for slg5ap1445v...

Thanx in advance

[MicroSMD Lab]

Hello, I have a bricked Eluktro laptop, can't seem to find a bios dump. I would like to have the ME cleaned please. The bios download from the Clevo repo has a file with a ".12" extension that is the same file size as the original bios but it is "configured" as opposed to "initialized" according to ME analyzer. I tried it and the laptop still did not boot.
Can anyone help me clean ME or repair this bios please? I attached both files....