Recent content by wtw0987

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    A2251 820-01949 Stuck at 5V after water damage

    Gotcha, ordered one and will update once I get it and place it on the board. Thank you for the help, it is truly appreciated. This is my first ever repair as a fun side-project.
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    A2251 820-01949 Stuck at 5V after water damage

    GS3 voltages were all still at 0. PP2V5 is getting 3.67V and I also noticed that PPBUS_G3H is now at 4.95V instead of 12V as it was before, U9080 is feeling a bit hot as well but I'm not getting anything weird when measuring the pads for it in diode mode so I'm not sure if there is a short on it...
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    A2251 820-01949 Stuck at 5V after water damage

    I put U9080 back on the board after seeing the readings from above and I think it is functional. Here are the readings I got on the logic board with U9080 back on it expected actual PPBUS_G3H_SSD0 0.51 0.378 P2V5_SW2_TPS62180_SSD0 0.425 0.378 SSD0_TPS62180_FB 1.413 1.383...
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    A2251 820-01949 Stuck at 5V after water damage

    Ah I see sorry wording was terrible there, the readings above are from the logic board without U9080 onboard, here are the readings from the U9080 pads directly from the backside of U9080 PPBUS_G3H_SSD0 0.584-0.6 on all pads P2V5_SW2_TPS62180_SSD0 0.517 SSD0_TPS62180_FB 1.38...
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    A2251 820-01949 Stuck at 5V after water damage

    expected actual PPBUS_G3H_SSD0 0.51 0.435 P2V5_SW2_TPS62180_SSD0 0.425 0.346 SSD0_TPS62180_FB 1.413 0.351 SSD0_TPS62180_SS 0.538 .0L SSD0_VR_P2V5_EN_R 0.64 0.741 SSD0_CR_P2V5_PGOOD 0.565 0.577 This is what I'm getting with U9080 off the board on the pads.
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    A2251 820-01949 Stuck at 5V after water damage

    I will also note that the board now pulls .2 amps instead of .06 amps as well when powered.
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    A2251 820-01949 Stuck at 5V after water damage

    PPBUS_G3H 0.458 L9080 0.003 I'm assuming that the SSD is dead? Could also be cause of a bad rework job I'm not the most experienced with air reflow.
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    A2251 820-01949 Stuck at 5V after water damage

    0.7v PPVDDCPU_AWAKE 1.1v PP1V1_SLPS2R 0.87v PP0V9_SLPDDR 1.8v PP1V8_SLPS2R 0.82v P0V82_SLPDDR 0v PPVNN_PCH_EXT 0v PVCCPCOREPRIM_SW0 0.8v PPVDDCPUSRAM_AWAKE 0v P1VPRIM_SW0 0v PP1P05_PCH_EXT 0v PP1V1_S3_REG_R 0v PP1V1_PHASE 0v PP1V8_G3S 0v PP3V3_G3S 0.005v...
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    A2251 820-01949 Stuck at 5V after water damage

    Removed U9080 and got these values for the 3 outliers 0.373 P2V5_SW2_TPS62180_SSD0 0.373 PP2V5_NAND_SSD0 0.371 PP3V3_G3H_RTC_REG_R The PP3V3_G3H_RTC_REG_R value lines up with the reference sheet but the other two are still a tad off as the reference sheet has those both around 0.425 I...
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    A2251 820-01949 Stuck at 5V after water damage

    0.13 P2V5_SW2_TPS62180_SSD0 0.133 PP2V5_NAND_SSD0 0.177 PP3V3_G3H_RTC_REG_R 0.456 PPBUS_G3H 0.27 P3V3_S5 0.377 P3V3G3HRTC_PHASE1 0.383 P3V3G3HRTC_PHASE2 0.347 PVCCQ_LX0 0.365 PP0V9_SSD0 0.399 PP1V8_SLPS2R 0.082 PP0V9_SLPDDR 0.254 PP1V1_SLPS2R Got these values after...
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    A2251 820-01949 Stuck at 5V after water damage

    I have a board that got a tiny bit of water damage through the air vent on the bottom of the laptop. The laptop was charging when the damage occurred and was at 1% and will not turn back on. When plugging in an ampmeter after unplugging the battery, the reading starts at 0.087A and slowly goes...
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