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...
Announcement
Collapse
No announcement yet.
Badcaps Electronics Repair Forum & Schematic Search
Collapse
Collapse
Please log in to your account to view your subscribed posts.
Directory | Topics | Posts | Last Post | |||
---|---|---|---|---|---|---|
Badcaps Capacitor & Electronics Repair Forum | ||||||
Frequently Asked Questions (No Posting)
All new members, PLEASE READ HERE FIRST! Posting only allowed by established members.
Topics: 45
Posts: 733
|
45 | 733 | ||||
Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
Topics: 236
Posts: 41,859
|
236 | 41,859 | ||||
Document & Software Archive | ||||||
Common Parts Library - Datasheets
Share or download datasheets or application notes for electronic components and other parts. Contribute your knowledge or ask questions. Before using please read our Terms of Service.
Topics: 1
Posts: 4
Last Post:
ncp81208 datasheet
|
1 | 4 | ||||
General Topics | ||||||
General Capacitor Questions & Issues
Questions and answers for identifying whether your device has bad capacitors. Also post general capacitor-related questions and issues here.
Topics: 3,185
Posts: 32,696
Last Post:
Lenovo Yoga No primary Screen
|
3,185 | 32,696 | ||||
General Computer & Tech Discussion
Have just a general computer question, post it here. This can be anything from an OS issue, hardware issue not related to capacitors, upgrade question, or whatever basic tech-related issue is on your mind.... This is also a good place to share your tech projects!
Topics: 4,496
Posts: 74,832
Last Post:
best cheap/free scores 1.1
|
4,496 | 74,832 | ||||
Troubleshooting Hardware & Devices and Electronics Theory | ||||||
General Electronics Technical Discussion
If you have a general question concerning basic electronics theory or component function & usage, here's where it goes.
Topics: 3,971
Posts: 44,325
|
3,971 | 44,325 | ||||
Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Technical discussions covering any type of desktop motherboard, video/graphics card, controller card, or whatever other desktop peripheral you need help with. Any and all brands and models welcome. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 6,809
Posts: 37,294
Last Post:
HP 400 G9 MINI bios
|
6,809 | 37,294 | ||||
Sub-Forums:
| ||||||
Troubleshooting & Designing Networks
Post your computer network questions, ideas, gripes, and so on in here. This can be any type of network, whether its cabled, wireless, or whatever. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 501
Posts: 5,444
|
501 | 5,444 | ||||
Troubleshooting Laptops, Tablets, and Mobile Devices
Technical discussions covering any type of laptop, notebook, netbook, tablet, or smartphone. Any and all brands and models welcome. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 31,875
Posts: 303,929
|
31,875 | 303,929 | ||||
Sub-Forums:
| ||||||
Troubleshooting Computer Displays
Technical discussions covering any type of PC/computer display, whether it be CRT, LCD, or anything else. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 5,322
Posts: 75,705
|
5,322 | 75,705 | ||||
Troubleshooting TVs and Video Sources
Technical questions about your defective television, projection screen, LCD/plasma, or any other type of video device. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 27,447
Posts: 374,706
Last Post:
Samsung ue46f5000 standby light flashing
|
27,447 | 374,706 | ||||
Troubleshooting Power Supplies and Power Supply Design
Technical discussion for power supplies. This covers PC supplies, and any other related power supply issue. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 4,180
Posts: 65,230
|
4,180 | 65,230 |
by CapLeaker
05-02-2024, 07:31 PM
|
|||
Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices
Technical questions about your defective laser or ink printer, plotter, copier, scanner, and other imaging & printing devices. This section also includes digital cameras. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 301
Posts: 1,665
Last Post:
Epson l3110 dump
|
301 | 1,665 | ||||
Troubleshooting Audio Equipment
Technical discussion on audio equipment troubleshooting and installation. This can be anything from a home/car stereo, guitar amp, and so on. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 2,322
Posts: 27,447
|
2,322 | 27,447 | ||||
Troubleshooting Appliances and other Household Electronic Stuff
Technical discussion on household appliances & other household electrics & electronics; including troubleshooting and installation. This can be anything from a washer/dryer, dishwasher, microwave oven, other sordid kitchen electrics and so on. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 223
Posts: 3,903
|
223 | 3,903 | ||||
Troubleshooting Game Consoles & Other Weird Devices
This can be anything from game consoles to arcade games to anything else that doesn't really fit into any of the above categories. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 1,002
Posts: 10,871
Last Post:
PS5 EDM-020 Beep but no light or fan spin
|
1,002 | 10,871 | ||||
Equipment Usage, Soldering, Techniques, and Reviews
Technical discussions concerning soldering techniques, usage of test equipment, how it works, what's best, and some pointers in using it all.
Topics: 1,376
Posts: 19,385
|
1,376 | 19,385 |
What's Going On?
Collapse
There are currently 388703 users online. 3347 members and 385356 guests.
Most users ever online was 1,342,976 at 10:51 PM on 04-26-2024.
- montassar ,
- Lulinha ,
- shoaibahmzzz2 ,
- pallino8888 ,
- Dmelektro ,
- ibro99beck ,
- nurses46 ,
- omobabanida ,
- altanohi ,
- drguru ,
- jentoris ,
- Adrian647 ,
- Taler85 ,
- Eric assenga ,
- donquishoot ,
- tatone ,
- tho97 ,
- shaqfu36 ,
- kas49 ,
- Netby ,
- paten ,
- arifbilal ,
- youcefinfo ,
- Yunior valdes ,
- alas3376 ,
- Paul20 ,
- Noursa ,
- rogfanther ,
- ajbernasko ,
- hanvxvr ,
- Aboud11 ,
- P4W3L ,
- hussein alghalibi ,
- admac ,
- tronix ,
- azanwaqas771 ,
- bmt_hr ,
- Tiav ,
- d_j_ufuk ,
- Kuroneox ,
- jerdanty ,
- petehall347 ,
- lti ,
- ibuprofeno ,
- Emanuele ,
- jmserwis ,
- Amayed ,
- Seda-Tech ,
- Norbert Csaba Bernad ,
- AL._.EX ,
- sajid bashir ,
- sinidi48 ,
- Ghamidi ,
- Dolapo1608 ,
- ajeep2001 ,
- AHMED-ABOOMER ,
- Alexis01 ,
- spendary ,
- rihtimteknoloji ,
- JoeFlash ,
- omar mokhtar ,
- Jenky77 ,
- canuri ,
- AMEN ,
- lotas ,
- St3ffMan ,
- Stevedb ,
- bitmosco1 ,
- linonovoa06 ,
- Cut.Sak ,
- Til ,
- jawal37 ,
- isaaclazar ,
- Davi.p ,
- sosit ,
- Mohamed18 ,
- Touqeersiddiqui ,
- mustafa hani ,
- mgp0695 ,
- haji ,
- techno_m ,
- Filrain ,
- Supporte ,
- Evg_001 ,
- simtech2006 ,
- junior moreno ,
- alberhash ,
- Denisgan22 ,
- Amaranath Udayanga ,
- lparker ,
- shmyzdrek ,
- kestral ,
- trannhan238 ,
- Lötkolbchen ,
- Magnusa2 ,
- Shakil3720 ,
- thereedcloud ,
- baadcaps ,
- KaminoReal ,
- Ukdigger ,
- smileikys ,
- zlyzet ,
- patryk006 ,
- crixmaniaco ,
- dcastro77 ,
- José Luis González García ,
- inflex ,
- sedinfo33 ,
- micro-man ,
- sebto ,
- adamgouadma ,
- interpc ,
- fahri01 ,
- evserv ,
- NConstantinou ,
- s-stratos
Badcaps Statistics
Collapse
Topics: 102,230
Posts: 1,269,201
Members: 492,778
Active Members: 16,426
Welcome to our newest member, tho97.
Latest Topics
Collapse
-
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?...1 PhotoToday, 09:56 AM -
by youcefinfoHi,
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-
Channel: BIOS & Schematic Requests!
Today, 09:43 AM -
-
by labelloHi 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 reply5 Photos
-
Channel: Troubleshooting Audio Equipment
Today, 09:41 AM -
-
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!...-
Channel: BIOS Requests ONLY!
Today, 09:36 AM -
-
by CPRMattI 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!Today, 08:36 AM
-
by b4rdockhi, 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...-
Channel: BIOS & Schematic Requests!
Today, 07:55 AM -
-
by SerbentasHi,
[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"Yesterday, 07:16 AM -
by Al-UmarPlease 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 thatToday, 07:46 AM -
by claws77my laptop has a weird power-on issue.
Once the laptop has been powered on, it can restart/ wake just fine on battery power or Adapter, ONLY If i have not closed the LCD.
If i am running on battery and have closed the LCD (even momentarily). it will not power-on/ wake-up on battery power no matter the battery percentage.
but once i open the LCD and connect it to the adapter (even momentarily) it will wake up gain and I wont experience any issues till i close the LCD.
i do not know where to look for repair.
thank you all for any advice.04-30-2024, 04:36 PM
Tag Cloud
Collapse
Trending
Collapse
-
by benwatersonHi 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,...Yesterday, 03:25 AM -
by youcefinfoHi,
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-
Channel: BIOS & Schematic Requests!
Today, 09:43 AM -
-
by labelloHi 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 reply5 Photos
-
Channel: Troubleshooting Audio Equipment
Today, 09:41 AM -
-
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!...-
Channel: BIOS Requests ONLY!
Today, 09:36 AM -
-
by CPRMattI 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!Today, 08:36 AM
-
by b4rdockhi, 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...-
Channel: BIOS & Schematic Requests!
Today, 07:55 AM -
-
by Al-UmarPlease 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 thatToday, 07:46 AM -
by ChapitaHi 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-
Channel: BIOS Requests ONLY!
Today, 04:01 AM -
-
by Ismail-U50Please 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...-
Channel: BIOS Requests ONLY!
Today, 06:52 AM -
-
by Caspar LoveWas 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 advance3 Photos-
Channel: Schematic Requests ONLY!
Today, 03:44 AM -