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Tag HP TPN-Q191 notebook

HP TPN-Q191 notebook schematic diagrams, boardview, BIOS, repair resources free download. Repair guides & tips, repair tutorials, repair manuals for HP TPN-Q191 notebook, learn how to repair your HP TPN-Q191 notebook.

Sudden power failure of HP TPN-Q191 notebook during normal use

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When the TPN-Q191 notebook is in normal use, it suddenly loses power. Carefully observe the fault phenomenon. After running for 3 days, the power indicator goes out. When it is turned on again, the self-test page reports CMOS error 502. According to the drawings, it can be seen that PQ1(AP0203GMT-HF) and PQ2(AON7408) are isolation tubes. Because PQ1 has a large current, no replacement is found, only PQ2 is found. After the replacement, everything is normal through plug-in test.