Questions tagged [motherboard]

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1answer
68 views

Can a static shock to a motherboard damage a hard drive that is connected? [closed]

Hypothetically, could the shock spread through the board and follow the wires and damage a hard drive?
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1answer
72 views

ESD damage to old system [closed]

I was doing a capacitor check on an old xbox motherboard. I always knew that you could damage a motherboard by touch but at the time either my mindset was off or overconfident in its supposed rarity. ...
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1answer
87 views

Can a pin to DDR4 be as thin as household tinfoil? (0.016 mm)

Edit: I think using the term "bus" might be wrong here. A "bus" needs to be large enough to facilitate an entire DDR4 stick's bandwidth to the Northbridge. The connection to each ...
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1answer
63 views

How to take this board off the undercover without breaking it?

I have this ECU on the below picture, I tried to pry it apart from the undercover with a screwdriver, but I dont want to put too much pressure so I don't break it. Any idea how to separate it? Also, ...
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0answers
51 views

MOD PCB with pads on bottom only - Danger of short circuit while reflowing?

I want to design a MOD PCB (daughter board,) to transform from QNF package to QFP package to use it on a existing/mother-board (just a reminder of the packages): Picture taken from here. My MOD PCB ...
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2answers
82 views

Does the JTAG port have enough bandwidth to monitor the state changes of all cores on an x86 machine, or even one at a time?

Based on my related question on Info Sec SE I want to know if I could track all changes to register state (and perhaps memory too) on multiple cores of an x86-64 CPU. Some of my research so far ...
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0answers
41 views

Motherboard of my printer that burns out

I'm asking for your help because I have some problems with electronics! I am designing a 3D printer with LCD technology. For this printer I use a NanoDLP motherboard and a 24V 250W Tiger Power supply (...
1
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1answer
94 views

What is the power voltage pin outs for a Playstation 5 PS5 power drive connector on the motherboard?

I ripped off the drive power connector from the motherboard on a PS5 and looking to get this repaired, but I need to find the power pin outs in order to fix it. Where can I find the voltage pinouts ...
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4answers
161 views

What could be generating this waveform in an EMC Compliance test?

We are having trouble with a CISPR-11 (EN55011) Radiated Emissions Class B compliance test in one of our solutions. The troubling part of it is basically an industrial motherboard (with a commercial ...
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0answers
101 views

PWR ON motherboard with Touch sensor TTP223 and Transistor

I have a TTP223 touch sensor, a BC347 Npn transistor and 10Kohm resistor. I want to make a touch button as substitution for my pwr physical button on the case of my pc. On the motherboard I have 2 pin,...
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2answers
65 views

Can I replace a board fuse like the one in the picture with a radial one?

The fuse on one of my commercial printers blew. See picture below. I am planning on replacing it but cannot find an exact fit. The closest I can find is another 400mA / 72v fuse that is labelled as &...
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1answer
51 views

What's the component name/part number of a motherboard audio jack?

I've de-soldered a triple 3.5mm audio connector thing from a dead motherboard and would like to use it for a small project. However, I have no idea what it's called, there's no part number on it, and ...
2
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1answer
65 views

Motherboard power-up issue [closed]

I am not entirely sure this is the place for my question but it is the closes i found. I am not an electrical/electronics engineer and this is my first attempt to what i am trying to do so please be ...
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2answers
42 views

Quick Question - What is the TPM Connector Size?

Anyone know the connector size for the TPM port? I wanna take the 5vSB power from it. If it helps its a MSI B450+ Tomohawk. Thanks! P.S. I have searched but TPM means too many things! Edit: WHOOOOOPS! ...
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1answer
51 views

How does a motherboard convert the input voltage to the 12V of the PCI? [closed]

Has it a DC/DC converter inside? Are the 12V guaranteed to be 12.0V sharp?
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0answers
97 views

Help identifying components on Sony PS Vita 2000 motherboard

I need help identifying 2 components from a Sony PS Vita 2000 motherboard. One is a chip with code AG8 only (has 5 pins each side). The other one is like a 4 pin resistor. No resistance between 2 pins ...
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1answer
60 views

Can anyone help to id the component from la-d933p motherboard?

The component is placed on dell laptop la-d933p motherboard And is connected to AON6992 mosfet
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0answers
52 views

Generic tablets and single board computers

I've been pondering the idea for a while now in regards to a project I've had in mind. Essentially, I was wondering how I would go about obtaining generic tablet/phone motherboard designs? Would I be ...
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0answers
79 views

Winbond v/s ITE chip

My ASUS motherboard has both a winbond 25q64fvsig and a it8995e-128 chip. In a repair shop in a country I was at the time, they flashed the wrong ASUS BIOS version. I tried flashing the right version ...
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2answers
445 views

What is this black tape on my laptop's keyboard?

I am trying to replace the keyboard on my 2019 Samsung Notebook 9 Pro. I had to pull off a layer of black tape on the old one to get it out. The tape was glued to the bottom of the keyboard, right ...
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0answers
56 views

Simple question about flow of electricity

I wanted to modify my power-on switch on my PC and decided to add few switches and LEDs before it powers up. Its more of an aesthetic modification but I have encounter one problem which is, shown in ...
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2answers
80 views

Is unplugging computer power cable from PSU the same as electricity outage?

I am not sure if they are the same, but something puzzling just happened. My dell precision workstation 2007 has been fine ever since, with many, many power outages over the years. But there is a time ...
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1answer
78 views

Which insulating tape and when?

There are quite a few tapes out there, from the plain black electrical tape to different color variations to Scotch 33+, 77, 88 to Kaptons (polyamide), I have also seen some velcro type wraps which ...
1
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1answer
89 views

Idea for a PC bios beep buzzer

Hi I want to make a buzzer for my PC motherboard. Similar things like this: https://boip.in/home/rajiekart-pc-motherboard-internal-speaker-bios-alarm-buzzer-1-pcs-pack?gclid=...
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0answers
68 views

Can I repair this motherboard damage? [closed]

I accidentally knocked a SMD electrolytic capacitor off the motherboard of an ASUS laptop I was stripping down to clean. It looks like the copper pad came off with one of the legs. So My questions are:...
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2answers
179 views

What motherboard components can I safely conformally coat and will this prevent condensation damage?

I plan on building and installing a small computer in my car for multimedia purposes. Since the only space I have for it is under the passenger seat and since the temperatures vary between -20 to 35+ ...
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2answers
349 views

How to solder speaker wires back to pcb (Switch)

I have a Nintendo switch lite with the connector for the speaker broken off. I am looking for the best way to fix this. Is it possible to solder directly to the motherboard? I am just looking to ...
1
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1answer
64 views

How do I connect this crane machine motherboard to my power supply? What connectors do I need for the power supply header pins?

I bought a DIY crane machine online and I'm trying to work out how to set up the power supply. The power supply they provided in the photos looks setup like this, where elements are screwed into the ...
0
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1answer
82 views

Component ID: SMD resistor(?)

tl;dr: how to procure a SMD replacement if all i know is the 3R3 marking and sizes (square 6.5mm sides, 2.9mm tall), with no extra information on thermal, etc. One component on my motherboard fried to ...
0
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1answer
177 views

Need help identifying IC from Intel Mini PC PCB - top marking "1930 3614564"

I was looking into a blown up Intel Mini PC PCB (PIPO x8) and saw that a capacitor and a nearby IC were blown. I have no clue what the IC is or was for. Luckily I had a photo before it blew so I know ...
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0answers
72 views

Can stripped hole in a motherboard be repaired?

I was doing an SSD upgrade and the fan is held to the motherboard by screws. When I went to re-install the fan, the hole/nut in the motherboard seems to be stripped. Can this be repaired? What do ...
0
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1answer
41 views

Motherboard panel header current

I'm looking to build a little pcb that boots my main PC over wifi with a ESP32. Because yes, no wake on lan or other fancy methods available. Looking through motherboard specs, I couldn't find a ...
3
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2answers
128 views

How can I create one PCB that I can plug-in to two different places in a mother PCB?

I believe there are many answers to this question, but I would like to have one that works best in KiCad allowing me to run the rule check for all the involved schematics. What have I tried: On top of ...
0
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1answer
29 views

Connecting different Sensors / Actuators

I have a fairly general problem in understanding, I guess, "bus systems": Take the following scenario: We aim to create a motherboard-type of board, it shall use some kind of CPU that is able (...
0
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1answer
208 views

How would you connect a LVDS display to a laptop motherboard supporting natively a different display?

I'm planning a project of building a 4:3 laptop based on existing (modern) components. As 4:3 displays are not manufactured anymore the idea is to take one from a old laptop, like a thinkpad T60. Then ...
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2answers
95 views

How can I discharge static electricity from my body?

I am planning to install a PCI Express Wifi-adapter in my PC. In order to do this, I would need to open my PC. I'm worried that if there is static electricity in my hands it could fry the motherboard. ...
0
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1answer
227 views

Voltage Regulator giving wrong output [closed]

I'm attempting to fix my desktop motherboard which is damaged by power surge, and I noticed that the +3.3VSB is giving 1.6 volts. There are few voltage regulators around the board, I checked them ...
0
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0answers
55 views

Motherboard with 4 pin and fan with 3 pin

This is my first question and I'm a little tired to do more and more research. So I decided to ask and please let me go straight to the point: The fan connector of my motherboard has 4 pin and the ...
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2answers
293 views

What is the role of discrete resistors and capacitors in a motherboard? [closed]

I know the basic function of resistors and capacitors. I know filters, oscillators, one-shot, differentiator/integrator, ADC/DAC, power supplies, etc. But in a motherboard why are there so many ...
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2answers
384 views

How to clean DUST stucked due to moisture on pins of chips ICs of motherboard circuits

Which chemical can I clean my old motherboard with, whose electronics components chips pins like ICs capacitor transistors diodes have dust stocked their color has been changed to black yellowish ...
3
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1answer
2k views

Can Computer Motherboards Work Fine Even With A Damaged SMD Capacitor/Resistor?

I'm asking this because when I was replacing my laptop battery, I accidentally hit and broke/disconected one SMD capacitor off the board, then I turned my laptop on, it made some weird electrical ...
0
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1answer
68 views

Resistor causing problems when in series with LED

I am wanting to dim the light on my computers power light, its just a 5mm LED what i am guessing gets 5v from the motherboard to power it The problem I am having is that when adding a 100R resistor ...
0
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3answers
835 views

Can I somehow control a PSU-powered fan using a 4-pin fan output on the motherboard? [duplicate]

I have a 12V 29.4W 3-wire Delta Electronics fan that I want to power using an EVGA 750 G3 PSU and control via one of the 4-pin fan terminals on an MSI MSI Z390-A PRO ATX LGA1151 motherboard. Not ...
0
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1answer
369 views

Beginner questions on some SMD components in phone motherboard

I'm trying to understand smartphone motherboard components and have a few questions that might be easy for some of you to answer. Please refer to the attached image for the question numbers: Are ...
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2answers
2k views

mATX motherboard JFP1 header: Does not require pull-up or pull-down resistors, right?

As per some of the mATX motherboard specifications, the JFP1 (Front-Panel connector #1 jumper), the purpose of the various pins is as per this graphic: As per the description of the pins, I get the ...
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3answers
428 views

Identify components on computer motherboard - cylindrical and cube shapes

I'd like to know what components are the ones with blue numbers and the big ones behind them: The latter components I'm talking about:
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2answers
385 views

How to identify a PCB connector type?

Is it possible for someone to identify these backplane (motherboard) connectors, the ones in brown color? The daughter cards which plug-into these connectors are 3U size cards. This is an outdated ...
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1answer
38 views

Where does a wire labeled "3G" must be connected in turbo x notebook? [closed]

I got angry and punched my Turbo x notebook and it shutted down. When I opened it again I got the famous error 0xc00000e9. So I thought that possibly a cable is disconnected or the hard drive is ...
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2answers
1k views

Using 5V motherboard pin

I want to create an electrical circuit that powers up the computer when a sensor is activated. This sensor is in parallel with the power switch button. As far as I understood from reading on ...
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3answers
253 views

ESD mats & motherboard safety

Let’s assume bog standard two layer ESD mat with static dissipative top and conductive bottom layer, with resistance to ground somewhere between one mega-ohm to one giga-ohm and with both a mat and ...