Lenovo ideapad 5-14alc05

[dimis7]

Re: Lenovo ideapad 5 14alc05

Sorry, guys.
Board has short circuit in 1,8 power line.
It's not a bios.
One of the indutor became too hot. It has strange voltage: 0,846 from one side and 0,766 from other.
Heat pipes hot too.

Your BIOS chip is probably 1.8v device.
Did you use an adaptor to read it?
Like this one.


If not maybe you burn it with CH341A programmer... Or even worse you burn something else in the same rail...

BTW i fixed mine. It was a shorted cap + shorted audio codec chip.
The BIOS in post #22 is working.

[Frostya]

Re: Lenovo ideapad 5 14alc05

Yes my chip is 1,8v device, and i have the adapter for it.
The indutor was hot before i have tried to read the BIOS. So i'm sure, that it was broken before me.
Last two night before dead, lenovo drain all battery till night. Short circuit progressed to total.

[dimis7]

Re: Lenovo ideapad 5 14alc05

Sorry, guys.
Board has short circuit in 1,8 power line.
It's not a bios.
One of the indutor became too hot. It has strange voltage: 0,846 from one side and 0,766 from other.
Heat pipes hot too.

Yes my chip is 1,8v device, and i have the adapter for it.
The indutor was hot before i have tried to read the BIOS. So i'm sure, that it was broken before me.
Last two night before dead, lenovo drain all battery till night. Short circuit progressed to total.

According to service manual (link here) the PL602 is on 0.75V ALWP rail and not on 1.8V rail, so your problem in not there...

[Frostya]

Re: Lenovo ideapad 5 14alc05

According to service manual (link here) the PL602 is on 0.75V ALWP rail and not on 1.8V rail, so your problem in not there...

Thank you for advice.
Will look at the board more carefully.
Power pin of bios has only 0.028 of 1.8, and look like almost shorted to the ground.
Wiil try to find power supply for 1.8 at board to check it health.
Thank again for manual!

[giorgiodi]

Re: Lenovo ideapad 5 14alc05

Good morning guys, I have this Lenovo ideapad flex 5 14alc05 laptop, the problem seems to be the bios, I would like to reprogram it, this could be fine

https://www.amazon.it/TECNOIOT-CH341...zcF9hdGY&psc=1

in the bios I attach the photo it says
winbond
74m12jws10
2115,

this is it okay? There it says 24 25 Series EEPROM Flash can you give me some clarification?

[peste]

Re: Lenovo ideapad 5 14alc05

Good morning guys, I have this Lenovo ideapad flex 5 14alc05 laptop, the problem seems to be the bios, I would like to reprogram it, this could be fine

https://www.amazon.it/TECNOIOT-CH341...zcF9hdGY&psc=1

in the bios I attach the photo it says
winbond
74m12jws10
2115,

this is it okay? There it says 24 25 Series EEPROM Flash can you give me some clarification?

look at the board (on both sides).. do you have another bios chip??

[giorgiodi]

Re: Lenovo ideapad 5 14alc05

look at the board (on both sides).. do you have another bios chip??

Hi, I completely disassembled the mobo, there is nothing behind it, just this as a bios chip

[dimis7]

Re: Lenovo ideapad 5 14alc05

Good morning guys, I have this Lenovo ideapad flex 5 14alc05 laptop, the problem seems to be the bios, I would like to reprogram it, this could be fine

https://www.amazon.it/TECNOIOT-CH341...zcF9hdGY&psc=1

in the bios I attach the photo it says
winbond
74m12jws10
2115,

this is it okay? There it says 24 25 Series EEPROM Flash can you give me some clarification?

Hi! This programmer should be compatible with your BIOS chip but you also need the 1.8v adapter / converter or you risking damaging your chip!

https://www.amazon.it/GeKLok-CH341A-...27&sr=1-3&th=1

From the service manual the chip is the same as Winbond W25Q128 and software for this programmer is compatible with this chip.

I read / write mine in circuit using the SOIC8 / SOP8 clip.

[onwork]

Hello everyone. I need a bios for Lenovo ideapad 5 14ALC05

There was a problem with a black screen; all the symptoms pointed to a problem with the BIOS firmware. One firmware from the forum (like post number 2) helped and the computer turned on But now it asks for a password. Unfortunately, the old BIOS firmware was not saved..
Sn R912XTAM
MTM 82HU00AYFR
MO R(N0B1525009
LC56-14A SVT 203021-1
448.0md08.0011
thank you in advance

[onwork]

Please help me fix the BIOS. After flashing the firmware, the computer turned on and after rebooting the capslock and esc buttons are lit. Notebook Flex 5-14ALC05 Laptop (AMD)(ideapad) - Type 82HU ,s/n R912XTAM ,MTM 82HU00AYFR

LC56-14A SVT 203021-1 448.0MD08.011 MO R9N0B1525009 Unfortunately, the old firmware was not saved( Thanks in advance

[kalilinux25]

Please help me fix the BIOS. After flashing the firmware, the computer turned on and after rebooting the capslock and esc buttons are lit. Notebook Flex 5-14ALC05 Laptop (AMD)(ideapad) - Type 82HU ,s/n R912XTAM ,MTM 82HU00AYFR

LC56-14A SVT 203021-1 448.0MD08.011 MO R9N0B1525009 Unfortunately, the old firmware was not saved( Thanks in advance

please try freshh no dmi

[onwork]

unfortunately it didn’t work. there is no reaction now

[kalilinux25]

unfortunately it didn’t work. there is no reaction now

Maybe you have other issue not bios

[Lukosiukas]

Good day, im insearch of help. Could someone verify or rebuild bios ?

Lenovo ideapad 5 15are05
FLMA0 LA-J701P
REV 1.0
SN MP1SKQ37
MTM 81YM008WLT

[SMDFlea]

Good day, im insearch of help. Could someone verify or rebuild bios ?

Lenovo ideapad 5 15are05
FLMA0 LA-J701P
REV 1.0
SN MP1SKQ37
MTM 81YM008WLT

No, not in this thread, it`s for the 5-14alc05 as it says in the thread title. Use the forum search engine to find a 5-15are05 thread and post there....

[elniñodelcautin]

I need to change the EC (NPCE386PB0DX-GP) because it is shorted. Does anyone know if it is programmed or is it programmed only with the bios? Since I couldn't find any file for the EC, please help

[SMDFlea]

I need to change the EC (NPCE386PB0DX-GP) because it is shorted. Does anyone know if it is programmed or is it programmed only with the bios? Since I couldn't find any file for the EC, please help

It might have an external eeprom chip, https://www.badcaps.net/forum/troubl...64#post3515964 , in the schematic for that board is has an NPCE386PB0BX

[nisham]

ideapad FLMA0 LA-J701P
S/N MP27F9HX

NO DISPLAY
HELP PLEAE

[peste]

don't post pictures unless asked....

[Dacmen88]

Hello all. Can anybody help me with finding .bin for thi mb but 3.0 revision.

[SMDFlea]

The bios is the same regardless of the motherboard revision.

[hoaca388]

ideapad FLMA0 LA-J701P
S/N MP27F9HX

NO DISPLAY
HELP PLEAE

ideapad 5-14ALC05 Laptop - Type 82LM