Badcaps.net Forum
Go Back   Badcaps Forums > Troubleshooting Hardware & Devices and Electronics Theory > Troubleshooting Laptops, Tablets, and Mobile Devices
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 11-14-2021, 08:31 AM   #1
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Lightbulb Notebook TERRA MOBILE 1541H

Hi all members, I'm Antonio and I write my first post from Italy. I will explain my problem: I have a notebbok TERRA MOBILE 1541H with cpu i7 4712mq with motherboard Clevo 6-71-W2W50-D02 which, when switched on,black screen. has start LED on, working CD-DVD, hard disk that can be heard spinning, fan stopped and CPU which naturally heats up. So what's the problem? Corrupted bios or burnt motherboard?
antppe is offline   Reply With Quote
Old 11-14-2021, 04:29 PM   #2
Sephir0th
Badcaps Veteran
 
Sephir0th's Avatar
 
Join Date: Oct 2020
City & State: Wangerland
My Country: Deutschland
Line Voltage: 230VAC 50Hz
I'm a: Hobbyist Tech
Posts: 290
Default Re: Notebook TERRA MOBILE 1541H

Open the Laptop, visual inspection, Voltage at all coils present? If yes, I'd indeed start with BIOS Firmware.
Sephir0th is offline   Reply With Quote
Old 11-15-2021, 12:24 AM   #3
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

Ok. Thanks for the reply. As soon as I have free time check.
antppe is offline   Reply With Quote
Old 11-20-2021, 03:41 AM   #4
speggio91
Member
 
Join Date: Apr 2020
City & State: Italy
My Country: Italy
I'm a: Knowledge Seeker
Posts: 33
Default Re: Notebook TERRA MOBILE 1541H

I don't know if it may be useful, but i attach the service manual of a similar models.
Attached Files
File Type: pdf W25CSV_ESM.pdf (4.37 MB, 8 views)
File Type: pdf W25CSW_ESM.pdf (4.35 MB, 8 views)
speggio91 is offline   Reply With Quote
Old 11-20-2021, 06:38 AM   #5
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

This is photo motherboard . On the two chips near the PCH there are just a few numbers and that's it.
Attached Images
File Type: jpg s-l1600 (1).jpg (198.0 KB, 5 views)
File Type: png Immagine 2021-11-20 133539.png (51.2 KB, 6 views)

Last edited by antppe; 11-20-2021 at 06:43 AM.. Reason: insert photo
antppe is offline   Reply With Quote
Old 11-20-2021, 07:24 AM   #6
speggio91
Member
 
Join Date: Apr 2020
City & State: Italy
My Country: Italy
I'm a: Knowledge Seeker
Posts: 33
Default Re: Notebook TERRA MOBILE 1541H

Quote:
Originally Posted by antppe View Post
This is photo motherboard . On the two chips near the PCH there are just a few numbers and that's it.
check these two chips, there should be the name of them on the pcb.
If they correspond to U15 and U16 then they are Main bios and EC.
Even if the name doesn't mach the schematics, try to check with a microscope or a magnifier the code over the top so you can identify what is it.
Attached Images
File Type: png PCH_Region.png (1.33 MB, 5 views)

Last edited by speggio91; 11-20-2021 at 07:39 AM..
speggio91 is offline   Reply With Quote
Old 11-20-2021, 01:11 PM   #7
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

The abbreviation on the one highlighted is 2940S - A
423QB
the other has the initials 20N03
3M01
Attached Images
File Type: png Immagine 2021-11-20 200237lilo900.png (607.2 KB, 5 views)
antppe is offline   Reply With Quote
Old 11-21-2021, 08:31 AM   #8
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

https://www.alldatasheet.com/datashe.../EN25QH64.html

https://www.alldatasheet.com/datashe.../EN25QH32.html
antppe is offline   Reply With Quote
Old 11-21-2021, 08:47 AM   #9
SMDFlea
Super Moderator
 
Join Date: Jan 2018
City & State: York
My Country: UK
I'm a: Knowledge Seeker
Posts: 8,999
Default Re: Notebook TERRA MOBILE 1541H

Quote:
Originally Posted by antppe View Post
The abbreviation on the one highlighted is 2940S - A
423QB
the other has the initials 20N03
3M01
Those aren`t U15 and U16 ,the 20N03 is a mosfet.Look for U15 and U16 in white silkscreen
SMDFlea is offline   Reply With Quote
Old 11-21-2021, 09:01 AM   #10
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

I found these on the EN25QH32 manual
EN25QH64
antppe is offline   Reply With Quote
Old 11-21-2021, 09:07 AM   #11
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

only these two are 8-pin
antppe is offline   Reply With Quote
Old 11-21-2021, 09:10 AM   #12
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

only these two are 8 pin
Attached Images
File Type: png Immagine 2021-11-21 160409fefrf.png (189.3 KB, 5 views)
antppe is offline   Reply With Quote
Old 11-21-2021, 09:28 AM   #13
SMDFlea
Super Moderator
 
Join Date: Jan 2018
City & State: York
My Country: UK
I'm a: Knowledge Seeker
Posts: 8,999
Default Re: Notebook TERRA MOBILE 1541H

Quote:
Originally Posted by antppe View Post
The abbreviation on the one highlighted is 2940S - A
423QB
the other has the initials 20N03
3M01
Post good clear readable pictures of both chips ,and the silkscrren around them
SMDFlea is offline   Reply With Quote
Old 11-21-2021, 10:53 AM   #14
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

Here are the pictures you asked for
Attached Images
File Type: png Immagine 2021-11-21 175059kkkkkkkkkkkkkkkkkk.png (166.6 KB, 2 views)
antppe is offline   Reply With Quote
Old 11-21-2021, 11:13 AM   #15
SMDFlea
Super Moderator
 
Join Date: Jan 2018
City & State: York
My Country: UK
I'm a: Knowledge Seeker
Posts: 8,999
Default Re: Notebook TERRA MOBILE 1541H

Quote:
Originally Posted by antppe View Post
Here are the pictures you asked for
pictures of the chips on the motherboard
SMDFlea is offline   Reply With Quote
Old 11-21-2021, 01:08 PM   #16
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

This is pictures of the chips on the motherboard
Attached Images
File Type: png Immagine 2021-11-21 200641 foto.png (266.1 KB, 6 views)
antppe is offline   Reply With Quote
Old 11-26-2021, 12:29 AM   #17
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

With the phone they do not come well, this is the same as the card that is in my possession
Attached Images
File Type: png Immagine 2021-11-26 072004ppp.png (1.12 MB, 3 views)
File Type: png Immagine 2021-11-26 071924llloopopo.png (1.70 MB, 3 views)

Last edited by piernov; 11-26-2021 at 03:47 AM.. Reason: google translate
antppe is offline   Reply With Quote
Old 11-26-2021, 07:08 AM   #18
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

I think these are better
antppe is offline   Reply With Quote
Old 11-26-2021, 07:10 AM   #19
antppe
Member
 
Join Date: Nov 2021
City & State: Pagani
My Country: Italia
I'm a: Knowledge Seeker
Posts: 22
Default Re: Notebook TERRA MOBILE 1541H

These in the photo are the only 8-pin chips that could contain the bios
antppe is offline   Reply With Quote
Old 11-26-2021, 10:04 AM   #20
SMDFlea
Super Moderator
 
Join Date: Jan 2018
City & State: York
My Country: UK
I'm a: Knowledge Seeker
Posts: 8,999
Default Re: Notebook TERRA MOBILE 1541H

Quote:
Originally Posted by antppe View Post
I think these are better
The third picture,those are the bios chips.Gigadevice 25B32 and 25B64
SMDFlea is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums 2003 - 2022
Powered by vBulletin ®
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 08:12 PM.
Did you find this forum helpful?