kodox
Badcaps Veteran
Last Activity: 03-08-2025, 03:44 AM
Joined: 07-12-2017
Location: West Java
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thankyou all.... -
flashed the file, current draw was 800-850mA. after disabling onboard ram it can display but, cpu temperature read 0[SUP]o[/SUP]C in bios screen, no response to power button press when using only battery (battery voltage at 8.4V) but it can charge the battery & read current capacity. processor used is intel core i3 gen 11 with intel graphic. still searching another bios 😑flashed the file, current draw was 800-850mA. after disabling onboard ram it can display but, cpu temperature read 0[SUP]o[/SUP]C in bios screen, no response to power button press when using only battery (battery voltage at...Leave a comment:
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flashed both files with same result, current draw only 40mA before and after power button press...Leave a comment:
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please look at dump file, i don't know if it still contain original image or not because it was flashed by other technician before me.
only draw 40mA on my bench psu
also tried bios file at post 7 with no luck, tried from other thread (forget which one) current draw 800mA and stay there not fluctuating
Model name: A1400EA-FHD354
Board model: X415EA R70
SN: R6N0CV007911228...Leave a comment:
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schematic is not the same as the boardview and also not complete, but thank's for your effort to shared it here...Leave a comment:
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thank you allLeave a comment:
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what ic is this, it measure negative rail of battery while battery resistance to common ground measured .1 ohm on my meter
laptop brand: itel
board number: N140JAL27_MB_V10...Leave a comment:
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thank's for the script, it worked on Lenovo IdeaPad 3 15IML05 bios which is use a DDR4 onboard ram, but i don't remove the chip from the board...Leave a comment:
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thank you all...Leave a comment:
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Thank's all...Leave a comment:
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original mosfet is using AONY36354, yes i thought so, higher rated mosfet should do the job without issue. but not in my case and i don't know why, it drive me nutz for almost a month so wrapped it up as soon as the unit working, thank's all for helpLeave a comment:
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Thank's for bv & schematicLeave a comment:
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found the culprit!!!
it was replacement mosfet for PQB2, at first i'm using QA3118 mosfet assuming it has a bigger "ID" based on datasheet, after replacing it twice without resulting any progress i ordered same part number that came with the board.
upon arrival immediatelly changed the QA3118 and voila, the board came alive even without battery attached & would charge the battery from 0% to 100% without issue (except for heat).
hope this help someone with same caseLeave a comment:
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the unit i worked on use 3S battery, i think it should have 12.6V on main power rail sir, the schematic on first post it's LA-K061P and it uses 4S battery that's why it 's written as +16.8VB​ on main power rail
on the first post i wrote "replace bq25710 and all related mosfet to it"
at first plug power adapter pin #4 (CHRG_OK) has 3.2V but after 1-2 second it pulled low (0V), measure resistance to gnd (without any power applied to the board) it's on range between 20-30 kilo ohm, even i tried removing capacitor C255 near UEC1 it still pulled low after 1-2 seconds...Leave a comment:
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voltage marked on the battery: 11.1V (Nominal) & 13.3V (Max. Charge Voltage)
voltage at the battery connector: 12.5V (first time testing after replacing BQ IC & mosfets) & 11.8V (before start posting)
on datasheet there were no pin marked as VCC in this BQ sirLeave a comment:
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ThinkBook 15 G3 ACL Not Charging Battery - LA-K602P Board
since i couldn't find schematic or boardview for this model (LA-K062P), i use closest board model found here [url]https://www.badcaps.net/forum/troubleshooting-hardware-devices-and-electronics-theory/troubleshooting-laptops-tablets-and-mobile-devices/schematic-requests-only/107087-lenovo-thinkbook-14-g2-are-flv3a-la-k061p-schematic-and-boardview[/url]
the schematic share same marking for each component, using same PD-Controller, same BQ25710, the only different is the battery cell used. LA-K061P uses 3S battery while LA-K062P use 4S battery per schematic.
what i've done:... -
thank's for helping, but the problem still exist. i think the SOC gone bad...Leave a comment:
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