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Hi guest...I'm beginner, I have problem with my notebook Sony Vaio V505. The Power not come suddenly. What should I do? thank you for advice.

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The symptom description from (machine totally dead, no LEDs) and 's note about power-supply faults point to a handful of distinct hardware checks. These checks are ordered from least invasive to more technical and are written as diagnostic actions rather than a single assumed fix.

  • Perform a power reset: remove external power and the main battery (if removable), then press and hold the power button for 15-30 seconds to discharge residual charge. Reconnect only the AC adapter and observe any LED or fan activity.
  • Verify the AC adapter output with a multimeter (check the adapter label for the expected DC voltage). If the adapter gives the correct voltage but the laptop still shows nothing, inspect the laptop DC jack for looseness, bent pins, or burnt smell—these often indicate a broken jack or internal solder joint.
  • Look for subtle signs: any flicker on LEDs, hard-drive spin, fan twitch, or beep codes when attempting power-on. Reseating RAM and the HDD (or removing one RAM stick if there are two) can rule out simple board-boot failures without repeating earlier suggestions.
  • If the adapter is dead, or the adapter measures correctly but the motherboard still refuses power, the fault may be the internal power circuitry (fuse, MOSFETs, or DC-in board) or severe board damage. Those require board-level diagnosis or an authorised parts replacement.

Cautions: disconnect mains before probing, avoid shorting adapter terminals, and be aware that battery damage can be hazardous. If basic checks show the adapter is good but the Vaio remains lifeless, board repair or professional service is usually the next step; for an older V505, compare repair cost versus replacement.

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Member Avatar for sittas87

you mean theres no power on the machine ??no lights no nothing?

Member Avatar for faesal

Yes, there's no respond and no light. Thank you in advance

Member Avatar for sittas87

if thats the case then youll need new bat3 or charger.first test another charger if the good charger fails then youll need new bat3

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