Schematic:
Lenovo B450 LA14 MB (09212-2M) Schematic
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Lenovo B450 LA14 MB (09212-2M) Schematic
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by coasterghostFor Badcaps Readers, Please note that I am hopefully going to present this same message to Lenovo to see if they have any insight to the matter as well and figured to share the entirety here for clarification. The System is out of warranty as it is but does have the option to have it extended.
Model Information: T14 Gen 2 (Type 20XK, 20XL) Laptop (ThinkPad) - Type 20XK - Model 20XK0069US
Board: T14 Gen 2 (Type 20XK, 20XL) - Type 20XK.
System Hardware:
Processor: AMD Ryzen 7 PRO 5850U
Memory: 1x 16GB DDR4 3200 (Soldered on Board); 1x Crucial 32GB DDR4...09-08-2025, 10:46 PM -
by rddubeHello everyone,
OK, so here is my issue.
This Lenovo B470 motherboard I am troubleshooting died and I identified it is the discrete Nvidia graphics chip that has lost it's ways!
So I removed it and now I am trying to change this motherboard to use UMA graphics, but I am having an issue interpreting the attached diagram. I have a 10K resistor in at the R2013 position and another one at the R2012. R2010 and R2011 are empty.
The motherboard starts, the fan spins but no display. It turns off by itself. I restart it and it does start but stays on...08-12-2024, 02:01 PM -
by ravi_1617Hello !
Model Lenovo B540
Board Details 09244-1
LA14 DIS MB
48.4DMO4.01.1
This Board has starting problem , when CMOS batter is removed ,it starts (turn ON) by itself fine, than if is short power switch once board turns OFF Fine.
when connected CMOS dont start.
3.3 volts present at power switch (it slight less 3.267-87) .there was slight liquid spill at around U53 (SL62872HR),when I clean that area . I mean when its little hot board warm , board starts few time ON and OFF by power switch
One more thing i want to mention ( by mistake i started at... -
by SRJointHi gays can anyone please help me with this model Lenovo yoga pro 9 16irp8 schematic and boardview.
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Channel: Schematic Requests ONLY!
10-24-2025, 05:55 AM -
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by dqtechRequest Schematic & Boardview Lenovo Idepad Miix520-12IKB Tablet 1702B_05_01 Rev: 1.0...
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Channel: Schematic Requests ONLY!
10-13-2025, 06:50 PM -
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