Re: Hp Probook 455 G3 DAX73AMB6E1 blinking charge light, not turning on
I agree. PQ5/PQ9 have no signs of a short.
One more thing I can think of is to confirm resistance to ground on +VIN. You can measure that at PR103 (doesn't matter which side since it's only 0.01 ohms), or at the drain of PQ9 instead if you'd prefer.
If that resistance looks good, then it may be time to replace PU20.
I agree. PQ5/PQ9 have no signs of a short.
One more thing I can think of is to confirm resistance to ground on +VIN. You can measure that at PR103 (doesn't matter which side since it's only 0.01 ohms), or at the drain of PQ9 instead if you'd prefer.
If that resistance looks good, then it may be time to replace PU20.
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