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"videoThumbnail Основные элементы материнской платы
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ремонт ноутбуков Харьков
ремонт телефонов Харьков
с чего начинать диагностику ноутбука?
как диагностировать ноутбук
как диагностировать поломку ноутбука
ноутбук не включается
что такое мультиконтроллер
что такое биос
что такое BIOS
как проверить BIOS
как проверить биос
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  • ruRussian
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00:00:00
hello dear viewers and guests of
00:00:01
our channel today we continue our
00:00:04
section on electronics repair for
00:00:08
beginners lesson 2 how we decided to make it a
00:00:14
clear example on the motherboard
00:00:17
la la 96 32
00:00:20
what we want we want to talk about the
00:00:22
main components modules blocks and
00:00:26
in general the structure is typical the structure of a
00:00:29
laptop motherboard and typical
00:00:31
faults, what is responsible for what,
00:00:33
tell us about, so to speak, convey our
00:00:38
experience in repairing quick diagnostics
00:00:40
using a laboratory power supply and
00:00:43
other things, let’s start with the code in the form of a
00:00:47
motherboard in our hobby on Intel’s
00:00:51
interest in the hop casal de platform, then it’s
00:00:57
like either Oshe 75 or 70 I don’t remember exactly,
00:01:03
well, look, the main thing is that on
00:01:07
the board there is a multi-controller juice from under
00:01:10
the process and outputs under the Ufa card or
00:01:17
sata
00:01:18
USB video output and output to the mat, let’s start
00:01:24
from the beginning first, what do we look at when
00:01:28
diagnosing if the laptop just stops
00:01:30
responding, look for use, the
00:01:32
consumption is standard, in all
00:01:35
laptops it’s approximately the same if
00:01:38
the consumption when turned on is from what
00:01:42
ampere, you need to look at digging something
00:01:45
with a percentage
00:01:46
if the consumption is somewhere around
00:01:49
three hundred to four hundred ampere this is a
00:01:52
northbridge server or in this case hal
00:01:57
but it’s worth carrying typical malfunctions
00:02:00
that can be determined by
00:02:02
connecting it to a laboratory
00:02:03
power source are the
00:02:05
basic systems for compiling well,
00:02:08
every laptop from Arby
00:02:10
bios it should be installed here
00:02:15
bios and there is this 25 series
00:02:19
spi flash memory capacity they begin with
00:02:25
megabytes and end at 8 16 816 the
00:02:30
maximum capacity of the bilas flash drive
00:02:35
which applied in this
00:02:37
case, we need to say, the development of a
00:02:40
laptop bios answers that bios is
00:02:45
such a way to
00:02:46
write a program code ready in which
00:02:50
information about each of the units
00:02:53
installed on the motherboard is written, for
00:02:55
example, there is a processor and 5 or the
00:03:01
same series line 5 3 and other things that is,
00:03:05
by juice it means bios stitches
00:03:08
information about these processors and how they
00:03:12
need to be flashed and they are ready and so on, that
00:03:14
is, the main function of the BIOS is
00:03:17
that it sends
00:03:19
pulse data packets to each of the devices
00:03:24
and polls them when the question is
00:03:27
successful
00:03:28
bios gives permission to boot to
00:03:33
boot the operating system if, for
00:03:36
example, diagnostics, what is it
00:03:39
if, for example, your laptop does not start,
00:03:43
but there is some kind of problem with use,
00:03:45
we can use Suvorov to look at
00:03:48
which packet of impulses stops
00:03:51
and with the help of this determine which one we have in
00:03:55
which one we have modules malfunction or
00:03:59
connect a post card postcard and immediately
00:04:02
translates these packets of pulses into post
00:04:04
codes that are already written in the technical
00:04:07
documentation, you can find them and understand
00:04:10
exactly which of the modules is not working and
00:04:13
then dig in one direction or another
00:04:17
what is not working, for example today was
00:04:19
laptop being repaired there was a post code 17
00:04:22
this is a yang civilization of nasty memory
00:04:26
RAM or memory here
00:04:30
the problem was in the chip
00:04:32
this is a clear example of a video chip
00:04:37
disabling the video chip transferring the board to you
00:04:40
payment worked everything went well
00:04:43
given so Probius told the multi
00:04:47
controller dante controller in this one this is the
00:04:51
main function this is where the input
00:04:55
and output ports are given since it has a built-in
00:04:58
DAC and ADC, it controls the charger am only
00:05:05
behind the spring, charging the battery control, the
00:05:10
input shoulders are also black
00:05:13
relatively and controls in this model,
00:05:17
as far as I remember, it also shows a cooler with a cooler
00:05:21
cooling before the power supply,
00:05:25
the temperature leaves me information about temperature and
00:05:29
it controls the turnover and grottoes and in
00:05:33
general the fuller
00:05:34
hop itself in this series performs the function of the
00:05:39
south and north since the processors of the
00:05:47
series three and five have a built-in
00:05:50
intel hd
00:05:55
graphics adapter epic processing
00:05:58
information from the responsible process of
00:06:00
the Thai well in In principle, it was felt by us in the
00:06:04
main systems that each
00:06:08
narrow controller has its own firmware, so to speak, which is
00:06:10
stored either in the multi
00:06:13
controller itself, if it comes with a multi
00:06:16
that allows you to save binary code,
00:06:19
that is, they have their own memory
00:06:21
or built-in
00:06:24
built-in memory with the multi controller,
00:06:27
it is written through the keyboard port
00:06:31
you can access the memory that is
00:06:34
built into the controller module and write it down
00:06:36
or clear the mi controller or there are
00:06:40
those that have either the 25
00:06:44
series or 2 4 series separately and a promo, that is,
00:06:49
it is installed next to the
00:06:51
multi control, as if the first thing you need to
00:06:57
pay attention to is
00:06:59
when Diagnostics plus crite
00:07:02
is looking for a place where there is a shimko on
00:07:07
duty on duty on the yarn, that is, 5 volts 33,
00:07:11
how to find it without you say for the circuit in
00:07:19
place for one example on this board on
00:07:25
this board in we find two chokes on
00:07:29
which the voltage should be 5 volts and
00:07:32
33 this is when they are turned off, discarded, they are
00:07:34
always located nearby and you
00:07:38
can measure on them how to measure about
00:07:42
them saprykin measure the voltage on them
00:07:47
voltage standby voltage and now
00:07:50
you can see by tying the data of the
00:07:55
chokes where the switch voltage is located
00:07:58
and
00:08:00
with the help you can even use the laptop circuit itself
00:08:05
just a datasheet the standard
00:08:09
binding of this shim, in principle, all this is
00:08:12
151 there 123 we drive in we look for a datasheet there
00:08:18
is an example as an example of the binding and this
00:08:22
example, linked with some minor
00:08:25
modifications, can be found here, well,
00:08:28
basically this is a typical example and from them
00:08:30
you can determine whether this noise works or
00:08:33
not and themselves
00:08:35
so that the standby voltage appears, and
00:08:40
also the main unit is the charger, this
00:08:44
also often happens that they break, they fly
00:08:46
out when they break, either the
00:08:48
batteries are not charged or they do not pass through or
00:08:53
open the power keys, they do not open the
00:08:56
power keys to power everything is he,
00:08:59
so what else can be said here these
00:09:02
for these purposes, you can measure the power in
00:09:07
this case, the power of the video card and the
00:09:09
power of the processor, percentage of the processor,
00:09:13
when in case the processor is powered from 2
00:09:16
shoulders and one shoulder is the
00:09:18
power of the video card, also feeding the chokes
00:09:22
next to the
00:09:24
positive memory; on it, you can measure the
00:09:27
power of the RAM and find out the
00:09:30
performance of
00:09:31
the bus which are responsible for powering the
00:09:34
RAM,
00:09:35
well, you can measure the input chokes, let’s
00:09:38
go through and why do they pass 19 volts to the
00:09:42
circuit itself, and the only other thing that happens is how to
00:09:47
diagnose a malfunction, forgot to
00:09:50
ask questions,
00:09:52
visited, that is, this bus on which the
00:09:57
bios is located, the BIOS power supply is measured and it
00:10:02
should be approximately 3 and 3 volts
00:10:05
because depending on the modification of the flash drive itself,
00:10:09
if the power is on, it means that the bios
00:10:14
is working, if there are already some
00:10:17
problems with other blocks, you need to
00:10:19
look at the diagram to understand and dig
00:10:22
further, well, vds are built here in the
00:10:27
hop
00:10:30
moisture from this is correct to say odds
00:10:37
this is such a protocol, it’s not even about this,
00:10:41
this is a type of communication, a type of
00:10:52
information transfer using a protocol, yes, it will
00:10:56
most likely give out, you can call it a protocol,
00:10:58
this is the transfer of
00:11:01
information over a low level signal to a
00:11:04
signal with low
00:11:06
but logical values, that’s what else
00:11:10
happens that you come across during a thunderstorm
00:11:15
you don’t use Wi-Fi, but you use
00:11:16
lan cables, the controller, which
00:11:19
is different lan, and the coil, the development
00:11:25
coil, the decoupling
00:11:27
transformer, how big the jerboa is,
00:11:31
is in short and the mother does not start
00:11:35
yet, data in these motherboards is
00:11:40
hysterical and half serviceability is either a
00:11:43
hop or a driver that is responsible for
00:11:45
powering the video card and the work process is also
00:11:51
obligatory, you can look at the datasheet
00:11:53
to measure the signals there are no such, as it
00:11:57
were, asks questions of the year what
00:12:01
signals should be on cartoons
00:12:02
what signals should be on the BBC
00:12:04
what
00:12:06
bios and what signals should be there and
00:12:08
there is no such strict classification
00:12:11
signals or voltages that are
00:12:14
suitable for all motherboards, depending
00:12:17
on their element base, that is, if
00:12:21
they have a bus like this, they have their own machine,
00:12:25
they have others, if the controller
00:12:28
is such a micro multi controller, as an example,
00:12:34
zucchini in it, the voltage signals are like this,
00:12:37
if
00:12:40
there is another one too, there is no other one such a strict
00:12:43
classification in which you can write
00:12:45
a list and look at the voltage, as if
00:12:49
all this information is available in the circuit
00:12:53
that can be found on the Internet
00:12:55
for types of well, for each of the pla
00:13:02
noise, we also mainly
00:13:05
check the keys field-effect transistors for a
00:13:11
short circuit or not a short circuit
00:13:14
the circuit was on a short strawberry
00:13:16
some will change the
00:13:17
selection of analogues for field-effect
00:13:19
transistors we will attach links under the video
00:13:22
as if well and in principle what can be said
00:13:27
in general so the introductory information for the USB
00:13:35
ports is responsible for this series well the computer of
00:13:39
Allah which costs hop from will be if it does not
00:13:43
work one does not sports
00:13:44
and power 5 volts are there, but the plus and
00:13:49
minus do not work, that is, the signal signals are
00:13:51
all problems of the bids x mix, also for the sound
00:13:55
the sound for the sound part the driver is responsible for the sound of
00:13:58
course, what type of
00:14:03
card is it installed, the
00:14:04
sound picture is installed and other things, well,
00:14:08
basically on today, everyone,
00:14:13
like and subscribe, we will try to
00:14:18
release some videos every week with
00:14:20
reviews and repairs, etc. We have a
00:14:23
lot of work right now, we physically can’t
00:14:27
cope with this idea to run a YouTube
00:14:31
channel, we will try to keep it down so don’t
00:14:35
leave, thank you everyone, like
00:14:37
all the best

Description:

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