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Trying to fix a lenovo l340-15api. 3.3V rail comes on, then immediately goes to zero.
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<blockquote data-quote="dazz" data-source="post: 291" data-attributes="member: 246"><p>Thank you. Reseting the BIOS is one of the things I thought might solve the problem, I assumed unplugging the battery and the coin cell would reset it, but I can't be sure if that's the case. I also tried using the reset button in the mobo to no avail. I have already tried desconnecting all peripherals, in fact, the problem persists even with nothing but the charger plugged to the disassembled motherboard. I'll see if I can probe the gate signal in the 3.3V rail mosfet and find out what's driving it. Thank you again.</p></blockquote><p></p>
[QUOTE="dazz, post: 291, member: 246"] Thank you. Reseting the BIOS is one of the things I thought might solve the problem, I assumed unplugging the battery and the coin cell would reset it, but I can't be sure if that's the case. I also tried using the reset button in the mobo to no avail. I have already tried desconnecting all peripherals, in fact, the problem persists even with nothing but the charger plugged to the disassembled motherboard. I'll see if I can probe the gate signal in the 3.3V rail mosfet and find out what's driving it. Thank you again. [/QUOTE]
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Trying to fix a lenovo l340-15api. 3.3V rail comes on, then immediately goes to zero.
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