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Search: Posts Made By: caspian
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-05-2021, 05:29 AM
Replies: 9
Views: 302
Posted By caspian
Re: ASUS UX360UA Turns On No Image

Now, more tests have to be done on this laptop to find more clues. such as DVD drive and HDD activity.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-04-2021, 03:11 PM
Replies: 4
Views: 361
Posted By caspian
Re: Hp 250 g2 audio video out of sync

you should do more tests on this laptop to find more clues.
what does happen if you use linux?
what does happen if you exit the video player and start it again after a few minutes?
Forum: BIOS Requests ONLY! 01-04-2021, 12:59 PM
Replies: 0
Views: 122
Posted By caspian
Bios Dump for Asus K56CB DIS

I have not tested this Bios dump but I guess it is for Discrete mainboard.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-04-2021, 12:54 PM
Replies: 9
Views: 432
Posted By caspian
Re: Asus K56CB-XO488H not detect Nvidia GT740M

https://www.badcaps.net/forum/showthread.php?t=91747
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-04-2021, 10:07 AM
Replies: 9
Views: 302
Posted By caspian
Re: ASUS UX360UA Turns On No Image

Disconnect the internal display and HDD, then test HDMI.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-04-2021, 06:10 AM
Replies: 1
Views: 160
Posted By caspian
Re: Unable to dump Bios from A1466

applying voltage in chip programming is done by the programmer device. you must not apply voltage separately.
desolder the IC and place it on the programmer to read it.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-04-2021, 05:57 AM
Replies: 9
Views: 302
Posted By caspian
Re: ASUS UX360UA Turns On No Image

how much is the resistance to GND on the 0-volt coil?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-04-2021, 05:48 AM
Replies: 13
Views: 494
Posted By caspian
Re: Hp 15-bw069sa la-e841p

It seems to be a Bios issue which is not compatible with the OS you installed. Try another version of Windows or reprogram Bios using a different version. Maybe you should install Win7.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-04-2021, 01:51 AM
Replies: 13
Views: 494
Posted By caspian
Re: Hp 15-bw069sa la-e841p

Boot the laptop using a Live Linux DVD and check what will happen.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-03-2021, 02:47 PM
Replies: 12
Views: 434
Posted By caspian
Re: Problem MSI 17631 Core power

The mainboard does not power up the core power without CPU.
It is possible that some other voltage/signal be missing too.
It is also possible that this CPU be defective. If you test another CPU on...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-03-2021, 12:49 PM
Replies: 12
Views: 434
Posted By caspian
Re: Problem MSI 17631 Core power

How much is the low resistance exactly?
It is possible that this mainboard has another problem too at another voltage/signal.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-03-2021, 10:41 AM
Replies: 8
Views: 387
Posted By caspian
Re: z5wah la-b161p

You need an external Flash programmer. Desolder the Bios IC and reprogram it using the programmer.
There are many videos and tutorials on the net that teach Bios programming an external Flash...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-03-2021, 10:38 AM
Replies: 12
Views: 434
Posted By caspian
Re: Problem MSI 17631 Core power

How much resistance (to GND) is on VCC_Core with and without CPU?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-03-2021, 10:15 AM
Replies: 8
Views: 387
Posted By caspian
Re: z5wah la-b161p

have you reprogrammed the Bios chip?
Usually, two or three different Bios dumps should be tested to reach a conclusion whether the issue is Bios or not.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 01-02-2021, 11:36 AM
Replies: 2
Views: 156
Posted By caspian
Re: asus gl502 keybpoard print wrong keys even on usb keyboard

How does it work if you boot the laptop using a live bootable CD or another installation of Windows?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-31-2020, 04:45 AM
Replies: 8
Views: 495
Posted By caspian
Re: Laptop motherboard theory

The circuit for LID switch usually resides on the Power-Button board which is not explained in the schematics.
An accelerometer in a laptop protects hard drive from damage. If the laptop is being...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-29-2020, 03:43 PM
Replies: 4
Views: 317
Posted By caspian
Re: Acer on keyboard some keys doesnt work

test the laptop in the cases mentioned in this page:
https://www.badcaps.net/forum/showthread.php?t=91524
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-28-2020, 04:17 PM
Replies: 1
Views: 234
Posted By caspian
Re: ASUS X554LJ white power led blink

you should test the laptop in various situations.
When the laptop starts normally, does the OS work fine?
When the laptop starts normally, what does happen if you turn it off and try to turn it on?
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-28-2020, 02:35 PM
Replies: 2
Views: 244
Posted By caspian
Re: Certain keys not working even after keyboard replacement

all the cases that you mentioned are still possible. you can narrow down this issue, if you find more clues.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-27-2020, 12:44 PM
Replies: 8
Views: 387
Posted By caspian
Re: z5wah la-b161p

Find the PLT_RST signal on the mainboard and measure its voltage.
Forum: BIOS & Schematic Requests! 12-27-2020, 05:38 AM
Replies: 1
Views: 201
Posted By caspian
Re: Mainboard GA-G31M-S2C

Here is Bios dump for this mainboard.
the Embedded controller is IT8718F on this mainboard.
How can I find the EC firmware inside this dump file?
I mean at which hex address?
Does the EC firmware...
Forum: BIOS Requests ONLY! 12-25-2020, 10:13 PM
Replies: 28
Views: 865
Posted By caspian
Re: lenovo ideapad y560 laptop serious problem

As a first try, reprogram only 25Q32BVSIG and test the laptop. As a second try, you can ask a local laptop repairshop to reprogram the old 25Q16BVSIG IC for you using a different programmer.
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 12-25-2020, 01:19 PM
Replies: 2
Views: 201
Posted By caspian
Re: aSUS k55vd no backlight

If D4602 is removed, I guess the followings may be possible:
- Backlight gets on earlier than expected at startup.
- Backlight stays on when the OS tries to turn the screen off after 20min of...
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 12-25-2020, 02:06 AM
Replies: 2
Views: 321
Posted By caspian
Re: IT8718F replacement on GA-G31M-S2C

Thanks,
According to the schematics, no external flash is connected to IT8718. The bios chip is only connected to ICH. Then, where is the EC firmware saved?
Forum: BIOS & Schematic Requests! 12-24-2020, 02:08 PM
Replies: 1
Views: 201
Posted By caspian
Mainboard GA-G31M-S2C

Schematics of Mainboard GA-G31M-S2C
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