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Message: <blockquote data-quote="pcrepair" data-source="post: 113" data-attributes="member: 1">Diagnosing a laptop motherboard without a proper schematic can be challenging, but here's a general approach you can consider based on the information you've provided:1. Shorts to Ground: Generally, you shouldn't find shorts to ground on power input lines unless there's a problem. The ADP-Detect pi short to ground suggests there may be another component on that line that has failed. Similarly, for the PWM chip measurements you mentioned, it's tough to say without a schematic, but those could potentially be problematic as well.2. Voltage Injection: Since you mentioned you have a thermal camera, you can indeed try voltage injection to locate the shorted component. But be cautious:   a. Start with a very low voltage (e.g., 1V) and current (e.g., 0.5A) to minimize risk.      b. Inject the voltage into the shorted line, and then monitor the board with the thermal camera. A shorted component will generally heat up very quickly.      c. Before attempting this, ensure that other critical components are isolated or protected. Some people use kapton tape or remove key ICs to prevent damage.3. +VCC_Core Line: The resistance you mentioned for capacitors on the +VCC_Core line might be okay since capacitors tend to show low resistance to ground, especially if measured soon after power is applied. The real problem would be if they're shorted directly.4. MOSFETs: They're a common point of failure. If you have a similar board for reference, compare resistance readings across similar points to see if they match.5. Visual Inspection Examine the board under a microscope or magnifying glass for any signs of damage, discoloration, or anything that seems out of place. This is especially true for the components near the one that exploded.6. Consider Professional Help: If you can't find the issue, it might be worth seeking out a professional who specializes in motherboard repairs, especially if the laptop has value or importance.Always remember safety precautions when working with electronics. Avoid applying power to the board unless necessary, and always work in a well-ventilated area. If you're unsure about any steps or readings, it's better to ask or consult with someone knowledgeable before proceeding.</blockquote>

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