VCC Core on the PC Motherboard: https://www.youtube.com/watch?v=uKybCG1SxyM
how to understand the VCC core from the 12V to the processor
0:02
assalamualaikum friends
0:08
, this time we will show
0:13
something on the PC motherboard, what is in front of us is a
0:19
Gigabyte PC motherboard
0:24
, this time we are not troubleshooting, we will just inform you
0:32
about VCC Core,
0:36
we often know this on a laptop,
0:41
how about a PC
0:44
, so VCC The core also
0:49
shows the voltage supply line to the processor,
0:55
we can see here some inductors, this is the
1:03
bridge between the power source from the
1:10
12V PSU
1:13
to the processor through the regulator
1:22
whose switching is done by this mosfet then
1:33
this controller,
1:38
this ic controller
1:43
is Motherbaord H61
1:48
the processor is a core i3
1:51
VGA so one here, the processor is
1:57
so here there is a VCC Core and here there is a VCC GFx
2:01
after 12V enters the mosfet
2:13
after the voltage is adjusted, then it enters the inductor filter
2:21
whose voltage is further smoothed by these elco.
2:26
If on our laptop motherbaord we see more there is an SMD Capacitor
2:40
there is a 330 uF, 470uF
2:42
if here using an Elco
2:50
560uF with a voltage rating of 6.3V
2:57
means that the voltage that appears here will be below.
3:00
Likewise, we see the VCC GFx
3:05
here, there is a 16V elco,
3:10
which smooths the voltage from the source, 12V
3:17
as we already know that the elco’s voltage rating must be
3:22
above the voltage that will enter
3:27
because the source is 12V so this is enough 16V
3:31
voltage then goes into the mosfet, which is controlled by the IC this.
3:35
Then the voltage needed by the chipset is
3:41
filtered using an inductor or the coil is
3:46
smoothed again using Elco, as the VCC Core
3:51
Elco functions to stabilize the voltage, reduce the voltage ripple. so later the voltage that goes
4:01
into this processor can be smooth. We know that the voltage on this processor fluctuates
4:06
, so if it’s not soft, the voltage is
4:09
rough, then the computer must be dumping, bluescreen.
4:13
problems caused by problems with the VCC Core are
4:21
bluescreen or dumping
4:27
or it could be a warning computer and can’t turn on the
4:31
black screen
Start Analysis of PC Motherboard Damage (https://www.youtube.com/watch?v=kkODZfwDRKE)
how to read and trace the PC mobo schematic
Also watch ANALISA KOMPUTER MATI TOTAL YANG SANGAT AKURAT – SECARA STEP BY STEP POWER YANG DIUKUR (https://www.youtube.com/watch?v=HWh7CJndCQY)
0:07
Assalamualaikum, in this video we will discuss about the PC motherboard
0:14
we will show the difference in reading the PC motherboard scheme
0:23
with the laptop motherboard
0:27
because we know on a PC some voltage
0:32
appears from the power supply unit (PSU),
0:37
different from laptops whose voltage source is one,
0:41
meaning the voltage level from the power source. only one
0:45
of the chargers is only 19V, from the battery it is only 10V
0:53
but on the PC
1:00
from the power supply several voltages appear,
1:10
especially 5V and 12V,
1:15
we can see in the schematic
1:20
we see at ATX
1:24
here we can see there are several voltage sources
1:33
from the PSU 3.3 V-
1:37
12V , -5V, + 5V, +12 V
1:47
so there is 3.3 V there is 5 V
1:54
12 V
1:57
there are three voltages that all appear from the PSU
2:03
so it’s not on the motherboard
2:07
so there are some differences in analysis
2:12
if we are repairing the CPU motherboard
2:16
then which we discuss where the
2:21
powersquence is from the CPU motherboard performance process starts
2:33
what we see here is the schematic of the ACER
2:46
motherboard, the ACER motherboard type H61H2 AM3 Version 1. 0
2:59
but here we only have a scheme that is almost similar to the LM3 model,
3:07
no problem,
3:12
by chance, this scheme has powersquency.In
3:17
this scheme, we can see the sequence of voltage emergence
3:21
and the work process from the start
3:25
here we can see shown in numbers
3:28
1 3 10 this is the sequence of voltage emergence
3:33
Of course starting from one, what voltage appears the earliest and works the earliest
3:44
on this motherboard. The ECSH61H2 used by ACER
3:51
is the build-up of ACER
3:54
ACER using the ECS motherboard
3:58
so the first voltage that appears is
4:05
1 PS_3VSB
4:09
so if we are analyzing the motherboard,
4:13
for example the motherboard cannot
4:15
we turn on according to the
4:18
voltage from 1 (PS_3VSB)
4:20
we can check here, where does the voltage appear?
4:25
Of course, from the power supply, where are all the sources from the power supply
4:27
points? in this line, to 5VSB,
4:36
we can check on the ATX port
4:44
on this port where the voltage appears or not
4:50
on what pin number we see first in the
4:54
5VSB
4:58
ATX power 5VSB scheme
5:48
here there is a 5V AUX code, appears on pin Number 9
5:57
this must appear the earliest
6:01
so if we look at the port,
6:09
then we can check the purple cable, the
6:14
AUX is 5V
6:26
on this cable, the voltage must be 3V or 5V first.
6:37
If we look at this scheme, it says 5VSB,
6:44
of course the appearance of 5 V
6:51
but why goes into 3 11
6:55
maybe this there is a certain process that can reduce the 5V voltage from the PSU to 3V
7:04
before going to the Super I / O IT8775E-EX
7:11
for details later, please look for it in the schematic
7:16
we don’t discuss there,
7:18
we only discuss the sequence
7:19
so the first thing
7:23
that must appear is the
7:25
voltage on the purple wire
7:30
here the voltage must appear first
7:37
then
7:41
the second one, so this voltage (No.1) goes to the Super I / O
7:50
IT8775E
7:53
chipset, which is the small chipset,
8:05
pin what number can we look for a discema
8:10
then after entering the I / O chips
8:12
we are looking for sequence number 2
8:18
RSMRST_L
8:22
so from this super I / O IC
8:26
the code
8:29
signal is RSMRST_L,
8:32
we have to find this on pin number 43
8:36
of IC Chips I / O
8:40
from this, pin Number 43
8:47
comes out the RSMRST code signal
8:51
must come out
8:55
then the third one
8:59
just enters This power Button
9:05
is connected to the I / O chipset
9:11
pin number 33
9:25
so in this scheme we can read at a glance, there are conditions that must be conditionally
9:34
conditioned first
9:41
before the Power Button button can be turned on
9:45
, first the voltage on this cable must appear
9:51
then on pin number 11 3VSB on the I / O chipset
9:57
which is a standard voltage, the voltage is approximately 3 V
10:00
then on pin number 43
10:05
of this chip the
10:06
voltage must also appear, the voltage will be sent to the PCH chipset
10:13
where the cooler is
10:16
sent here the signal
10:23
then pin number 33 of these chips must have voltage too
10:30
that is before the power button is turned on
10:33
so first this cable must have a voltage of 5V
10:37
pin number 11 of this chipset
10:41
there must be a voltage too
10:44
then pin number 43 and
10:47
then pin n Number 33 there must be a voltage
10:50
before the power button is pressed,
10:53
then everyone, of
10:57
course, next we do is press the power button,
11:02
how the power button works
11:05
from this signal, this diagram shows that
11:08
there is a downward signal, the box goes down again,
11:11
this shows that when the power button is pressed the
11:15
voltage is down (drops 0) the
11:17
voltage at pin 33 chips I / O is 0
11:22
when the power button is pressed
11:24
but when it is released it returns to approximately 3V
11:31
so if at pin number 33 when the power button is pressed the voltage drops 0 then it is released again 0
11:40
this indicates the power button it works
11:42
and the power button has to do with the I / O chipset, this is good, it
11:46
means that when the power button is pressed the I / O chipset knows that if there is a power button that has been pressed,
11:53
this is a command that must be responded to by the I / O Chipset
11:59
so that it
12:01
works next how, the sequence is number
12:05
PWRON 4 in this scheme
12:08
is the pin number 31 is visible signal
12:13
SIO’s Power Button down too
12:16
so after the power button is pressed, pin number 31 must decrease the voltage
12:24
this signal is sent to the PCH too (PCH chipset) and
12:31
so next,
12:33
so if this motherboard can’t be turned on,
12:36
it’s pressed it doesn’t respond
12:38
we check on pin number 33 of the I / O chipset
12:42
if when the power button is pressed there is no response here,
12:48
maybe the connection between the power button and the I / O chipset is problematic
12:57
, we can do this we can do the jumper, of course we will explore in more detail in this scheme,
13:02
but if the power button can be detected on the I / O chipset
13:07
but the laptop does not turn on, of
13:08
course we will Do further checking to step number 4, namely
13:13
pin number 31 of this I / O chipset
13:16
if pin number 31 does not respond
13:20
when the power button is pressed
13:21
even though pin number 33 responds
13:25
then it could be one of the causes is this I / O chipset is damaged
13:30
, friend all of
13:34
this is just the beginning we are starting to learn to detect damage to the PC motherboard. We will
13:41
meet again in an upcoming video
13:44
Assalamualaikum Wr. Wb.
Analisa VCC Core Yang Hilang (https://www.youtube.com/watch?v=wRVCIwauMqo)
trace VCC core from the 12 v source to processor. read the schematic
0:00
Assalamualaikum warahmatullahi
0:02
wabarakatuh sobat semuanya yang kita
0:05
akan ceritakan di sini adalah sebuah
0:08
kasus black screen yang terjadi pada
0:12
motherboard Asus
0:14
x42d dan ini Teknik ini bisa kita
0:17
terapkan pada motherboard model apapun
0:20
ya penyebab daripada black screen pada
0:23
motherboard ini adalah tidak munculnya
0:25
tegangan VCC Core yaitu tegangan yang
0:28
mensuplai prosesor kita biasa sebut vcc
0:33
core atau V Core
0:35
ya V Core yang pada motherboard ini e
0:39
tegangannya melewati coil ini dan
0:42
ini kita sering lihat ada dua coil pada
0:46
for Walaupun ada juga yang menggunakan
0:49
satu coil kemudian menggunakan filter
0:51
kapasitor kapasitor SMD ini ini dan ini
0:55
ada juga di
0:56
baliknya jadi setelah motherboard dinyala
1:00
kan kita cek dengan di coil ini enggak
1:02
ada di coil ini juga enggak ada coil ini
1:05
enggak ada coil ini enggak ada tidak
1:07
muncul tegangan jadi tidak tampil apapun
1:10
pada layar monitor baik internal maupun
1:13
eksternal lalu apa yang kita lakukan
1:15
tentu kita pastikan dulu bahwa jalur
1:18
vcc core ini tidak short sirkuit caranya
1:21
gimana caranya tentu prosesor kita Lepas
1:24
dulu kemudian kita cek resistansi di
1:27
coil ini dan coil ini juga tentu pada
1:30
kondisi normal kalau kita menggunakan
1:33
multitester analog tidak bergerak sama
1:35
sekali ya kalaupun bergerak sangat kecil
1:37
sekali atau kalaupun bergerak dia balik
1:39
lagi ke posisi nol karena di sana ada
1:42
kapasitor kapasitor yang agak gede
1:44
kemudian kita yakin bahwa jalurnya tidak
1:46
short eh maka kita langsung menuju ke IC
1:51
controller yang mengontrol smps daripada
1:56
blok vcc Core jadi ini adalah IC
1:59
controller
2:01
vcc core pada motherboard ini dari mana
2:04
kita bisa tahu tentu dari skema atau
2:07
kalau sudah hafal biasanya langsung bisa
2:09
deteksi ya kalau enggak ada skema kita
2:11
bisa lihat e data daripada IC modelnya
2:16
bisa kita lihat di
2:17
bodinya kita lihat data seet-nya nanti
2:19
kita bisa tahu IC itu fungsinya apa lalu
2:23
kita menuju IC titik mana yang paling
2:27
pertama kita cek tentu yang pertama kita
2:29
cek adalah titik vcc daripada IC ini
2:34
yaitu PIN yang eh terhubung dengan
2:39
sumber tegangan yang mensuplai IC ini
2:43
Nah setelah kita cek ternyata Eh pada
2:47
pada PIN vcc ini tidak muncul tegangan
2:50
vcc ada di PIN nomor 32 yang terhubung
2:54
langsung dengan Pin nomor dua kita bisa
2:56
tahu ini
2:57
di data seet pada data seet daripada IC
3:01
Maxim 17480g ini kita bisa tahu bahwa
3:05
PIN vcc ada di PIN nomor
3:08
32 jadi kita cek di PIN nomor 32 ini PIN
3:13
nomor 32 di sini tidak muncul tegangan
3:16
lalu dari mana tegangan ini bisa diambil
3:20
maksudnya sumber tegangan vcc ini PIN
3:24
nomor 32 ini dari mana kita bisa lihat
3:26
di boot view ini nah PIN ini terhubung
3:29
ke mana saja ya Nah ternyata PIN ini
3:31
terhubung ke ini ya
3:34
r8008
3:36
pc806
3:37
pr8021 kita lihat R ini terhubung ke
3:40
mana kita mulai dari sini nah Ternyata
3:44
kita tahu bahwa ini terhubung ke + 5 vs
3:48
kalau tadi yang
3:50
r1-nya ini terhubung ke vcc core option ini
3:53
kembali ke IC ya
3:55
jadi kita bisa lihat di sini ada
3:57
tegangan level tegangan Plus 5 volt
4:01
kodenya plus 5
4:03
vs inilah sumber tegangan yang menjadi
4:07
supply IC control vcc Core kemudian kita
4:10
cek di sini kalau di motherboard nya 10 20
4:15
30 di sini ya di sini PIN nomor 32
4:18
Ternyata kita cek di sini enggak ada
4:21
tegangan kemudian kita cek pada
4:24
resistor ini di sini plus 5 vs ini
4:29
muncul plus 5 vs ini ada tegangan 5 volt
4:33
ni di PIN satunya ini yang terhubung
4:36
langsung ke vcc pada IC control vcc Core
4:40
tadi tidak muncul tegangan di sini
4:43
muncul hanya 0 ohm sekian ini
4:46
menunjukkan bahwa ada masalah pada R ini
4:48
maka setelah kita cek kemudian kita
4:52
lepas eh resistor ini kita lepas
4:54
ternyata ada ada apa masalah pada pada
4:59
motherboard-nya ya pada apa
5:03
E di
5:06
pin-pin pada resistor tadi pada resistor
5:11
ini jalur-jalur yang di motherboardnya
5:14
kelihatan
5:16
seperti berkerak kayak gosong gitu
5:19
jadi posisinya di sini seperti di f view
5:22
tadi resistornya ini kecil sekali Nah
5:26
resistor ini kita cek di titik ini ada t
5:30
5 volt namun di sini tidak ada maka kita
5:34
lihat ternyata E solderannya yang
5:38
dimotherboard itu
5:41
berkerak maka kita lepas resistornya
5:44
kemudian kita bersihkan kita solder
5:46
ulang ulang kakinya demikian juga
5:48
resistor ini kita lepas kita ganti
5:51
ukurannya sesuai dengan eh di tadi dibat
5:56
view tadi ditunjukkan ukurannya resistor
5:59
ini 2,2 Ohm ya kita kita
6:05
ganti dengan resistor 2,2 Ohm kita
6:10
solder dengan baik kemudian kita cek
6:12
motherboard ini bisa kembali bekerja
6:14
dengan dengan baik kemudian kita cek vcc
6:17
core nya juga keluar kita cek pakai
6:20
pakai monitor juga normal muncul
6:24
gambarnya jadi pekerjaan selesai kita
6:27
coba simpulkan
6:28
ya J salah satu penyebab motherboard black
6:31
screen atau no display bisa dinyalakan
6:35
tapi pada tampilan enggak muncul apa-apa
6:37
dan laptop enggak bisa booting tidak ada
6:40
suara apa-apa itu salah satunya adalah
6:41
tidak munculnya vcc Core yaitu tegangan
6:45
yang mensupplay e prosesor setelah kita
6:48
cek jalur vcc core ini tidak short maka
6:52
kita langsung menuju IC controller vcc
6:54
Core setelah kita cek
6:56
ternyata PIN vcc pada IC VC core
7:00
controler vcc core ini tidak ada
7:02
tegangannya jadi IC ini tidak
7:04
mendapatkan tegangan kerja kemudian kita
7:08
telusuri akhirnya kita temukan bahwa
7:11
tegangan suplai IC ini 5 volt dengan
7:15
kode 5 vs itu tidak muncul gara-gara
7:19
resistornya rusak kita ganti
7:21
resistornya beres baik demikian sobat
7:23
semuanya semoga
7:26
bermanfaat ketemu lagi di video
7:28
selanjutnya nya wasalamualaikum
7:30
warahmatullahi wabarakatuh