Hello, I've got this laptop and it works perfectly on ac power however on battery it either goes to recovery before windows loads or loads very slowly into windows and crashes, crashes faster if I try to open anything like edge or open a folder with a bsod sometimes, when i say crash the screen just turns black and either restarts or turns off after a minute
Some things I noticed are it works fine in the bios, browsing the windows recovery options is very slow, trying to open a cmd will ask me to login even though there is no password and says incorrect password when anything is...
theperfectbreakfast
Member
Last Activity: 11-24-2021, 06:09 AM
Joined: 04-24-2021
Location: us
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HP Envy x360 15-ds1083cl Crashing on battery
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Aliexpress used not new ics
I thought I was purchasing new but instead received recycled parts?
Is there anything I can do about this like get half a refund returned to me? They do appear to work although im not 100% certain
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Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
Unfortunately I think the software wants the usb c charger to be plugged in which i tried but its not detected. I also tried updating and adding .net framework but I always get this error after clicking next
EDIT Actually I'm giving up on this one thanks alot mon2...Last edited by theperfectbreakfast; 05-12-2021, 11:07 AM. -
Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
Hello I need help wiring this cypress programmer to the cypd4226 ic, I've tried connecting the 5 pads on the right of the programmer to the ic but the psoc programmer that came with the programmer wont load from device.
I'm sure i connected everything right but not sure
...Leave a comment:
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Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
hello, I have updates: the replacement Cypd4226 and the Cypress Development kit arrived.
The progress on my board is all shorts are gone now. I unsoldered a bad usb c port, it was causing some shorting, i had no idea these could go bad, do these ports have circuitry? pins A5 and A4 are shorted to ground on the port itself.
I've soldered in the new Cypd4226 and the laptop will not power on or detect charger still, nothing changed, it does appear to need firmware.
...Leave a comment:
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Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
I bought the laptop with no signs of life, the battery was undervoltage at less than 3 volts each cell so I removed the plastic on the battery and charged them like tranaripardis with an external li ion charger but there was no difference.
Just right now I compared the yoga 920 battery with a lenovo flex 5 1570 battery I have here and the connector is the exact same however the voltage specs for the yoga battery is 7.68v and the flex is 11.4v.
The yoga battery connector...Leave a comment:
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Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
Ok I understand, i can finally put this lenovo motherboard that ive been starring at for days away until the orders come in.
Thanks, youre very helpfulLeave a comment:
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Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
Also whats the difference between CYPD4226-40LQXI and CYPD4226-40LQXIT ?
My board uses CYPD4226-40LQXIT is it compatible with CYPD4226-40LQXILeave a comment:
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Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
Is the programming kit easy to use? I just started learning how to read motherboard schematics 3 days ago but I will buy and try if it helps in the long run since I do intend to start board repairLeave a comment:
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Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
[url]https://community.cypress.com/t5/USB-EZ-PD-Type-C/How-to-upgrade-CYPD4226-40LQXI-firmware-for-Lenovo-yoga-920/m-p/119518#M1950[/url]
CYPD4226 preprogrammed?Re: Lenovo yoga c930 NM-B741 Doesn't...preprogrammed?Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-CLeave a comment:
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Re: Lenovo yoga c930 NM-B741 Doesn't boot or charge USB type-C controller issue.
Hello everyone, i just came across this post and forum after diagnosing my own yoga 920 13 ikb and see that i have the exact (almost) same problem as tranaripardis and quickly registered to post.
The CYPD4226 ic im dealing with also has VCCD shorted to ground and additionally pins 7, 8 and 9 are also shorted, the capacitors for 7 and 9 are shorted too. It all happened with a small liquid spill on the thunderbolt charging connector
Anyways I figured the chips no good anymore...Leave a comment:
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