twonk9098
Senior Member
Last Activity: Yesterday, 03:46 PM
Joined: 08-20-2018
Location: Birmingham
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I forgot to mention, it seems to charge fine when powered off.... -
Leovo Thinkbook 14 G2 ITL - Charging issues
Hi,
I have 2 x Lenovo Thinkbook G2 ITL laptops. They seems to be identical specs, both 11th gen, 1135G7 cpu, both 12gb ram and both 256gb M.2 ssd.
I have ensured both have the same latest bios and ec firmware.
One of them works totally fine however the other has charging issues.
I have compared both motherboards in diode mode and cannot find much of a difference anywhere.
I have swapped the motherboards over to the other casings and the issue transfers.
It's behaviour is it will connect at 20v on USB-C and always start to charge.... -
The other thermal sensor on the board is U134, I believe this one is for the GPU....Leave a comment:
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Hi, I removed US1 because it is a sensor IC for the CPU according to the schematics. I noticed upon removal the laptop would stay on for 64 seconds instead of the 34 seconds with it installed. This made me think there was an issue with it therefore replaced it. After replacing it, the laptop worked totally fine. Tested under full load to and the temps got up to 89 degrees at a push....Leave a comment:
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Hi guys, I finally figured it out. My issue was US1 which is a F75303M. It's a temp sensor chip for the CPU.
Ordered mine from Aliexpress and fitted. Laptop is perfect now.
Hope this helps.Leave a comment:
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Thanks for the response however the board in this is a 820-00138-A which from what I see does not have a dedicated graphics chip.
Thank youLeave a comment:
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Macbook Pro mid 2015 battery required to boot?
I have read many forums that state the Macbook Pro 2015 needs / does not need a battery to boot. I'm not convinced as yet which is correct.
The Macbook Pro mid 2015 I have has no battery and do not really want to buy one just to test.
This model has the newer trackpad which is not clickable when turned off.
At the moment, without battery it does turn on with no display (with backlight), no chime and then turns off after 13 seconds. I see this from the power draw on my DTPS.
If I hold the power button whilst connecting the magsafe 2 charger it turns on, again no image but... -
I have the Lenovo Thinkbook 14 G2 ITL which had charging issues.
I found the issue to be the Super IO chip so I ordered from Aliexpress and fitted.
The laptop seems to be working fine now however the Lenovo website could not autodetect this laptop.
I then noticed that the BIOS reported an unknown serial number and unknown model.
I have done a bios update from the Lenovo website along with a ME update however it is still unknown.
Has the Super IO chip somehow changed this detail in my BIOS?Leave a comment:
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Lenovo Legion 5 high fan spin turns off after 34 seconds
Hi all,
I have a Lenovo Legion 5 with a Ryzen 7 series CPU and RTX 3070 GPU. My issue is that it turns on and all seems fine except after a few seconds the fans spin up high and the laptop turns off after 34 seconds.
I can get into bios and can even boot and login to Windows however after 34 seconds no matter if Im at the bios screen or booted into Windows it will just turn off.
I have managed to run HWmonitor and the temperatures of the CPU and GPU are fine, I can also touch the heatsync which is warm but not hot.
I have tried a few new bios but exactly... -
wow, thank you. Does this have my serial number?Leave a comment:
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Hi,
Is anybody able to either remove the password from my attached bios file or supply a bios with the correct serial number and no password to replace mine?
I have a Lenovo Legion 5 15ACH6H, Ryzen 7 with RTX 3070 GPU.
My serial number is PF3D0S7W
FACTORY id JVHFC1
Many thanks...Leave a comment:
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Re: Lenovo Flex 5-14ARE05 - bricked.
Thanks for all your help guys.
Upon further inspection I found the tiniest corrosion on two of the pins on the EC chip. After cleaning I noted that both pins were no longer attached to the pads due to the corrosion.
I jumpered both pins to their respective areas on the logic board and the laptop came back to life.
I restored the original bios so I have ther serial number and windows keys also.
Again thanks for all your suggestions and help.
RegardsLeave a comment:
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Re: Can't read 25Q128A SPI chip from a HP 840 G1
I have found NeoProgrammer to be the best software to use with the CH431A as yet.
This can be found here and seems to support alot of chips.
[url]https://khandishnetwork.com/dl/neoprogrammer-software-2021-v2-2-0-8-22-06-2021/[/url]Re: Can't read 25Q128A SPI chip from...21-v2-2-0-8-22Leave a comment:
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Re: Lenovo Flex 5-14ARE05 - bricked.
Thanks Mon2 and Koby however I have done both to no avail.
I have bought a new chip and restored the original bios on to it. This also made no difference therefore my next step was to try a bios reinstall from USB.
This time the USB activity led flickers for about 5 minutes before turning off. Again though nothing changes after this either.
Thanks for your help an suggestions.Leave a comment:
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Re: Lenovo Flex 5-14ARE05 - bricked.
I have does this. The light on the USB Flickers for about 6 seconds, then becomes on and stable. After a further second or so it starts to flicker again for around 2 seconds and then stays on. There is no more activity after this.
Thank youLeave a comment:
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Re: Lenovo Flex 5-14ARE05 - bricked.
Update,
Iv'e checked the inductors on the logic board and I am measuring the following voltages.
12v, 5v, 3.3v, 1.2v, 0.8v.
The CPU does get warm and the fan kicks in to cool it down again.
I have also noticed that pressind Caps lock on / off does nothing, the light stays on.
If I press FN + Space the Caps lock light goes off however I cannot get it to turn back on. FN + Esc toggles the ESC light on and off.
Thank youLeave a comment:
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Lenovo Flex 5-14ARE05 - bricked.
Hi Everyone,
I have a Lenovo Flex 5 -14ARE05.
The Esc and Caps Lock lights are on, black screen, fans kick in when required and the laptop charges.
From what I have read on here these seem to be the same symptoms that others on here are getting therefore re flashing their bios to cure the problem.
I have tried flashing my bios and a number of bios's from another thread on this site only to end up with exactly the same symptoms, nothing changes no matter which bios I flash.
I am using the CH431A V1.7 which allows me to select 1.8v without an adapter. This I... -
Re: lenovo Flex 5 bios need
Apologies, will do. Thank you.Leave a comment:
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Re: lenovo Flex 5 bios need
Hi Everyone,
I have the Flex 5 -14ARE05, Esc and Caps Lock lights are on, black screen, fans kick in when required and the laptop charges.. From what I have read on here these seem to be the same symptoms that others on here are getting therefore re flashing their bios to cure the problem.
I have tried flashing my bios and a number of bios's from this thread only to end up with exactly the same symptoms, nothing changes no matter which bios I flash. I am using the CH431A V1.7 which allows me to select 1.8v without an adapter. This I have also...Leave a comment:
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Re: iMac A1418 820-00431 no power, LED 1 only lit
The output voltage on pin 7 is relatively 0v.
Pin 2 is 3.3v.
In diode mode on my meter, I don't get any shorts, I cannot relay the exact measurements at this time but can assure they are all above 0.3+ I think maybe 0.5+.
I will measure these tomorrow to be accurate though.
From what I can see, due to having the source albeit 12v and 3.3v I should get a voltage on the gate which I don't.
I will update this thread tomorrow and again when the fet's arrive and I've fitted.
...Leave a comment:
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