-
-
Re: Lenovo G50-70 - power on problem
I can't find problem, have someone any idea? ThanksComment
-
Re: Lenovo G50-70 - power on problem
I feel your IT8586E is either not properly soldered, or bad flash or the chip itself is bad. Remember, whatever we order online, these chips are not new(majority case). So i'll suggest before discarding this particular case if you another ite8586, try it once. I had similar problems and ultimately the so called new ite chip was bad. You never know with these cheap chinese stuff....Comment
-
Re: Lenovo G50-70 - power on problem
It could be the KBC as suggested by mcplslg123 ,try this before replacing it though,Check everything on ADAPTER_ID_ON# ,PR322 voltage on both pins ,PC1266, PD304, PQ995 if they`re on the board ...Last edited by SMDFlea; 10-21-2018, 04:55 AM.Comment
-
Re: Lenovo G50-70 - power on problem
IT8586 is soldered properly, I also mean my problem is in bad flash or chip itself. I need to buy programmer and then try it with other chip.
SMDFlea: these components aren't on boardComment
-
Re: Lenovo G50-70 - power on problem
Sorry denis, i re-read your post-it was programmed chip.Comment
-
Re: Lenovo G50-70 - power on problem
Today I reprogramm KB controller and laptop is now on, but with no picture, only black screen. I don't have voltage on +VGA_CORE, on gates of mosfets also and PIN 8 ENABLE signal on ISL62771HRTZ should be 3.3V? because I have zero here. I attached right schematic for NM-A271.Last edited by DeniS182; 11-15-2018, 05:15 AM.Comment
-
Re: Lenovo G50-70 - power on problem
Is PXS_PWREN even coming from PCH? (MCP in schematic DDI, EDP section) There are many places where it goes....Last edited by MJ-meo-dmt; 11-15-2018, 06:20 AM.while alive { live(toFullest=true) }Comment
-
Re: Lenovo G50-70 - power on problem
I inject 3.3V to 8pin enable and I have 1V on vga_core but still black screen.
+0.95VSP_VGA and +1.8VSP_VGA/1A are here.Last edited by DeniS182; 11-15-2018, 07:45 AM.Comment
-
Re: Lenovo G50-70 - power on problem
And you get VGA_PWRGD signal at EC? When you inject?while alive { live(toFullest=true) }Comment
-
Re: Lenovo G50-70 - power on problem
yes pin 85 EC - 3VComment
-
Re: Lenovo G50-70 - power on problem
@DeniS182 Uhm... I'm busy here with a HP board giving me random start/not working shit... so my mind is fluttered with shit atm
but uhm... Did you make sure that you have the suspected powerup states. See page/sheet 18
while alive { live(toFullest=true) }Comment
-
Re: Lenovo G50-70 - power on problem
Did you flash a good bios with clean ME ,does the fan spin .Comment
-
Re: Lenovo G50-70 - power on problem
I tried two dumps I don't know if ME is clean or not. Fan spin 1sec after laptop power on and after few seconds spin normally.Comment
-
Re: Lenovo G50-70 - power on problem
Post your original bios backup if you have it.It has your DMI info/win key .Comment
-
Re: Lenovo G50-70 - power on problem
I attached my backup of biosComment
-
Re: Lenovo G50-70 - power on problem
try this bios and ec.,latest versions.If it doesn`t work its back to more testing.Comment
-
Re: Lenovo G50-70 - power on problem
I flashed main and ec bios. Now led and fan only spin for 1 second, then turns off and again, again.. it's turning on and off.Comment
-
Re: Lenovo G50-70 - power on problem
I removed PJ702 now motherboard have vga_core voltage without injection, led is still on, fan not spinning. Before PJ702 I have 1.05VS, after PJ702 there isn't short, this rail only have 90-100mA current consumtion.Comment
-
Summary of BIOS Whitelist Removal Problem
Problem:
I am attempting to remove the WWAN card whitelist from my Lenovo ThinkPad T560.
Initial Findings:- My current BIOS version is N1KET58W (1.45).
- I have a CH341A programmer and have successfully created two full backups of my BIOS.
- I have the ability to use command-line tools on a Linux machine.
- I attempted to use several automated and manual patching methods on my N1KET58W (1.45) BIOS, including using hex strings. These attempts all failed.
- I concluded that the
08-12-2025, 03:01 PM -
For Badcaps Readers, Please note that I am hopefully going to present this same message to Lenovo to see if they have any insight to the matter as well and figured to share the entirety here for clarification. The System is out of warranty as it is but does have the option to have it extended.
Model Information: T14 Gen 2 (Type 20XK, 20XL) Laptop (ThinkPad) - Type 20XK - Model 20XK0069US
Board: T14 Gen 2 (Type 20XK, 20XL) - Type 20XK.
System Hardware:
Processor: AMD Ryzen 7 PRO 5850U
Memory: 1x 16GB DDR4 3200 (Soldered on Board); 1x Crucial 32GB DDR4...09-08-2025, 10:46 PM -
Recently, I have started to encounter a problem with Lenovo E15 Gen 2 models not opening. When you try to open the device, it gives a warning sound and does not display an image, when you apply light pressure on the keyboard, the image appears and works for a while, when you turn it off and on, the same thing happens again. Bios was tried, RAM slots were cleaned and soldered to the legs, the problem still persists. There seems to be a problem with the onboard processors, but since Lenovos glue the processor firmly from the sides, the paths are very damaged when removing it. Has anyone encountered... -
Good morning,
I have a problem with Lenovo T580, which after error code 0288 suggests a problem with the display. I checked the display and it works on another laptop. I replaced the display cable with a new one. I programmed another BIOS (downloaded from this forum) and I still have the problem of a dead display - there is an image via HDMI, and the system does not detect the built-in LCD at all. The problem appears to be hardware. What can I check to confirm or disprove this? I found many threads on the Internet related to this problem 0288, but without specific solutions. Please advise.... -
Lenovo V310-15IKB Type 80T3 laptop, i7 7th cpu with dedicated Ati video
sn LR09493E
MB DAOLV6MB6F0 REV. F
The laptop was working fine, the only problem was that when I turned it on, the screen was hard to turn on, it would wait for about 30-40 seconds before an image appeared on the screen.
Initially, I updated from windows to Intel Management Engine 11.8 Firmware, restarted, everything was fine.
Then I updated the bios, also from windows, to the last vs, vs 46. It restarted, those lines with bios update progress appeared, restarted and that's it, since then...
Comment