Badcaps.net Forum
Go Back   Badcaps Forums > Search Forums
Register FAQ Calendar Search Today's Posts Mark Forums Read

Showing results 1 to 25 of 500
Search took 0.01 seconds.
Search: Posts Made By: caspian
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-31-2022, 04:35 AM
Replies: 10
Views: 4,216
Posted By caspian
Re: *Use Full MOST COMMON I.C FOR LAPTOP YOU SHOULD HAVE IN STOCK*

In the past, I had prepared a list of very popular common ICs for Laptops belonging to 2012-2014. Even though those laptops are quite old now, I print that list here, in case anyone needs it:

...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-31-2022, 04:23 AM
Replies: 2
Views: 144
Posted By caspian
Re: Lenovo CE570 NM-A831 Rev 3.0, acpir in windows 10 setup

In addition, check this out:
https://www.badcaps.net/forum/showthread.php?t=108349
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-30-2022, 04:01 AM
Replies: 10
Views: 457
Posted By caspian
Re: asus gl502vsk no +vccore

Probably, the CPU and PCH are fine and the problem is somewhere in the CPU VRM circuit.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-27-2022, 03:47 AM
Replies: 31
Views: 704
Posted By caspian
Re: Acer 5750G P5WE0 LA-6901P images only on external screen

Are the resistance relative to GND?
It is strange that both the pads are shorted.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-26-2022, 11:46 AM
Replies: 31
Views: 704
Posted By caspian
Re: Acer images only on external screen

first remove R1 and measure resistance on each pad of it.
Moving R1 to R3 probably has no danger and probably does not solve the problem.
Does this laptop have a dedicated GPU chip?
Forum: BIOS Requests ONLY! 07-25-2022, 08:53 PM
Replies: 10
Views: 6,170
Posted By caspian
Re: acer 5738g bios

If anyone has more Bios dumps for this mainboard, please upload it:

Acer 5738

Mainboard model:
jv50-mv ddr3 m92 mb
48.4cg08.011
Forum: BIOS Requests ONLY! 07-25-2022, 08:46 PM
Replies: 10
Views: 6,170
Posted By caspian
Re: acer 5738g bios

I have another bios dump for this laptop but it does not work in my laptop. However, it is probably good.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-25-2022, 10:59 AM
Replies: 10
Views: 631
Posted By caspian
Re: Acer 5738 SIO replacement

I tried two different ICs, W25Q16BVSIG and MX25L1606 with a known good dump, but they all resulted in turning on but no display.
The original Bios IC was MX25L1605D.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-24-2022, 11:43 PM
Replies: 10
Views: 631
Posted By caspian
Re: Acer 5738 SIO replacement

the chipset is GM45.
SIO is WPCE773.
I replaced MX25L1605D by MX25L1606. But it did not work. Laptop turns on but no display.
Is it possible that the Bios is programmed somehow to work only with...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-22-2022, 08:21 AM
Replies: 9
Views: 337
Posted By caspian
Re: ThinkPad X270 doesn't start anymore

yes, probably.
Now you should trace signals according to the following thread:
https://www.badcaps.net/forum/showthread.php?t=44779
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-21-2022, 12:18 PM
Replies: 8
Views: 173
Posted By caspian
Re: Lenovo Yoga 500-15IBD-80N6 screen problem

So the cable is probably fine.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-21-2022, 11:58 AM
Replies: 8
Views: 173
Posted By caspian
Re: Lenovo Yoga 500-15IBD-80N6 screen problem

If there is a local screen shop, you can take the disassembled laptop there and ask them to test a compatible screen on the laptop. then buy it of it worked.
Does the display get normal at some...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-21-2022, 11:47 AM
Replies: 8
Views: 173
Posted By caspian
Re: Lenovo Yoga 500-15IBD-80N6 screen problem

So test another screen cable and another screen too.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-21-2022, 11:32 AM
Replies: 8
Views: 173
Posted By caspian
Re: Lenovo Yoga 500-15IBD-80N6 screen problem

How was HDMI before disabling discrete GPU?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-21-2022, 11:11 AM
Replies: 9
Views: 337
Posted By caspian
Re: ThinkPad X270 doesn't start anymore

This damage seems serious and can be the cause of the black screen. you should check this section of the mainboard according to the schematic to discover any defective component there and replace...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-21-2022, 05:50 AM
Replies: 9
Views: 337
Posted By caspian
Re: ThinkPad X270 doesn't start anymore

a photo of it would help.
Forum: BIOS Requests ONLY! 07-21-2022, 02:31 AM
Replies: 10
Views: 6,170
Posted By caspian
Re: acer 5738g bios

How to find the VSCC table in the dump file of Post2 that cannot be opened by UEFITool?
I opened the file in Hex Editor. but I did not find the table.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-21-2022, 12:28 AM
Replies: 10
Views: 631
Posted By caspian
Re: Acer 5738 SIO replacement

I opened the Bios dump in Hex Editor. But I cannot find the table. Maybe in has a different name in this Bios dump.
The Bios dump is in this link:...
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-20-2022, 04:43 AM
Replies: 10
Views: 631
Posted By caspian
Re: Acer 5738 SIO replacement

In the web, some people wrote WPCE773 and WPCE775 are compatible whereas some other people wrote they are not compatible.
They are pin-compatible, but I am not sure they be functionally compatible....
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-20-2022, 01:06 AM
Replies: 10
Views: 631
Posted By caspian
Re: Acer 5738 SIO replacement

Thanks,
The laptop is old and its bios is not UEFI. So it has no VSCC table. How can I check whether W25Q16BVSIG is supported?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-19-2022, 10:37 PM
Replies: 10
Views: 631
Posted By caspian
Re: Acer 5738 SIO replacement

This laptop originally has a bios chip model MX25L1605(SO8). Does it work if I replace it by another model W25Q16BVSIG(SO8)?
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-19-2022, 02:00 PM
Replies: 10
Views: 631
Posted By caspian
Acer 5738 SIO replacement

Dear members,

I am going to replace the WPCE773 chip by a new one on the mainboard of Acer 5738.
Does the new WPCE773 require programming before soldering it onto the mainboard?

Thanks
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-18-2022, 03:12 PM
Replies: 4
Views: 215
Posted By caspian
Re: Alienware M18x Shorted CPU Mosfet

A photo of the replaced Mosfet and the two caps, and NCP6151 would help.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-18-2022, 12:06 PM
Replies: 18
Views: 259
Posted By caspian
Re: Dell Latitude 7420, 7320 voltage changed

You have to buy a new Bios chip.
Forum: Troubleshooting Laptops, Tablets, and Mobile Devices 07-18-2022, 04:24 AM
Replies: 18
Views: 259
Posted By caspian
Re: Dell Latitude 7420, 7320 voltage changed

I guess your programmer is not reliable enough. However, the programmer may be fine. If you can, ask a friend to test your chip using another programmer.
However, the chip is the main suspect now....
Showing results 1 to 25 of 500

 
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 02:41 AM.
Did you find this forum helpful?