Hi friends i have lenovo thinkpad l450 not turning on But when I remove the battery COMS, whoring after When I turn it off led blinking after not turning on ،Again, it must be remove coms battery to turning on.
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Hi friends i have lenovo thinkpad l450 not turning on But when I remove the battery COMS, working after When I turn it off led blinking after not turning on ،Again, it must be remove coms battery to turning on. sorry my english is not good -
??But when I remove the battery COMS, whoring after
Working after you remove the CMOS battery? What is the voltage of this CMOS battery?
See attached. Locate the diode mated to the CMOS / RTC battery. Remove all power. Meter in DIODE mode. Connect the meter leads across this part. The meter should tone beep and conduct in one direction (not the boy band; be a value of 0.3 to 0.6 volts) and will block when the meter leads are reversed. Confirm that this diode is not leaking.
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I removed all the power, first diode 0.3v. Second diod 0.2, resistor is ok, but with battery computer It gives 3.3 volts but when I put the battery coms/rtc it gives 2.8 voltsAttached FilesComment
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This specification for the Lenovo ThinkPad L450 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the L450 boardview and L450 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Lenovo ThinkPad...09-06-2024, 05:30 AM
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This specification for the Lenovo ThinkPad L450 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the L450 boardview and L450 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Lenovo ThinkPad...09-06-2024, 05:30 AM
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Hi,
I want to remove the Bios Password of my Lenovo IdeaPad U330p with the Lenovo autopatcher. I have the CH341A Black and I'm using NeoProgrammer. The Programmer has an LED that indecates when it reads or writes the Chip. When I try to Connect my Programmer to the Bios Chip (Winbond 25Q64FVSIQ) the LED lights up even though I didn't click on Detect botton in NeoProgrammer. If i click on Detect the LED still remains on and NeoProgrammer says "IC not responding".
SN: QB08570065
MB: DA0LZ5MB8D0; REV: D; MODEL J31/N02 -
Hello Everyone,
after some struggle I managed to sucessfully dump the Bios of an Lenovo Ideapad Duet 3 (11IAN8). Can someone help me remove the Bios Password?
MO: YM90B49150N2
MTM: 82XKS00500
S/N: YM10CPP2
Thanks in Advance, the Bios dump is attached.... -
Dear precious friends., I am working on a Lenovo Flex 5 15IIL05 (Motherboard LC55-15C 19792-1 448.0K105.0011). The problem with it, does not turn on at all. I see the battery charging LED but no response from the power button. Output coils 3.3V & 5v are perfect. LDO 3V is also present, I measured this on the power button. The on/off button is working perfectly. I re-programmed with new bin files & the status is still the same. I do not see any abnormal voltage & any Shorts or any kind of liquid spill. The MB is clean. I am using this schematics Lenovo Flex 5-14IIL05 19792-1, seems...
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