Re: Lenovo G555, only external display working
You can check them with multimeter in diode mode.
You can check them with multimeter in diode mode.
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Re: Lenovo G555, only external display working
sorry NB.Comment
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Re: Lenovo G555, only external display working
in my case. i have toshiba with ati gpu. work with external disply likes your. i chnged bios ic and reprogram it. laptop normal again.Comment
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Re: Lenovo G555, only external display working
its important to check clk+clk- before a further step??sigpicComment
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Re: Lenovo G555, only external display working
but how to check? i dont have scopeComment
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Re: Lenovo G555, only external display working
You said you have checked GMCH_ lines when you have swapped NB. How?Comment
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Re: Lenovo G555, only external display working
when it was removed i check linesComment
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Re: Lenovo G555, only external display working
How?Comment
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Re: Lenovo G555, only external display working
from pads under the ic to lvds connectorComment
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Re: Lenovo G555, only external display working
I Know you did that but How? Continuity check?Comment
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Re: Lenovo G555, only external display working
yes.Comment
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Re: Lenovo G555, only external display working
Usually lines on boards are checked in diode mode i.e. (lvds line check from Asus training manual)
"
Use multimeter to measure LVDS Con. Pin signal is correct of Diode value and compare with GOOD M/B.
Check LCDS Data signals,
LADATAP[0:2]
LADATAN[0:2]
Check LCDS Clock signals,
LACLKP/LACLKN
"
Of course, this way you do not have to remove GMCH.Comment
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Dear Friends., I am working on a Lenovo YOGA 910-13IKB. It is working fine, no problems at all. Today I was connecting to a External Display through the USB-C HUB, it could not connect. (This Lenovo model has only 2 USB-C Port, no HDMI, so has to be connected through a External USB-C HUB). I have changed the setting to External display but still no luck. Re-loaded Windows 11, assuming that the software might be faulty & still same. I know my USB-C port HUB is 100% good (HDMI, USBs, SD Reader) as I use this on all MacBooks & even my buddy has another HUB, still cannot connect to External...08-16-2023, 07:58 PM -
Hello guys! I need a little help, I have one laptop for repair, it is an Aorus 17G YD, gaming laptop. Broken display, some cable ripped form daughter board connector, case broken, battery discharged and probably locked, etc. After I did the most tedious job I ever did on soldering back the broken cables (shielded cable) , I measured resistance on CPU and GPU core, 3 and 5 v ps and any coils I find on the board, everything seems to be fine. After I plugged the charger I don't get the power led light on from the charger connection maybe because the battery is locked , but on power button I have... -
Hi Guys,
LENOVO IDEAPAD FLEX 5 - 14ITL05
BIOS VERSION - FXCN24WW
EC VERSION - FXEC18WW
MTM - 82HT0004US
SERIAL NUMBER - R9130MDP
CPU - i7-1165G7
This laptop powers on but shows nothing on the internal display.
However, if I attach an external display it works fine.
Observations: When I shut down the laptop from windows,
the fan remains spinning until I close the lid. If I leave the lid open
the laptop will restart on it's own although I select shut down from windows.
Also, when I check the voltage on the... -
Here is a pretty crazy one.
Step 1.
Laptop was brought to me as dead not working. Removed everything , cleared everything.
Step 2.
Some liquid damage close to the Type - C connector, and the connector even though it was cleaned wasn't charging the battery . Removed the Type-C port, and replaced it. Now the laptop turns on and charges battery. Shows external screen , not internal.
Step 3.
Took out the screen and checked it to a secondary Gen 2 i have, screen works like a charm.
Step 4.
Lets ,dive into the board. I see the edp cable on the... -
Computer in question : Razer Blade 15 2020 Base Model
Model# RZ09-03286E22
BIOS CHIP: WINBOND W25Q128BV
What I'm trying to accomplish:
I want the computer to properly boot with an external display with the attached display disconnected from the motherboard. I have a CH341A programmer and full capability of modifying the BIOS easily. I Have tried various setting changes to no Avail.
What I've tried thus far: Too much to note and I really dont remember everything I changed but here it goes.
W/Stock BIOS - 1.06:
Disconnect the...
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