Member Avatar for petruccio

Hi,

I have an issue with my Vaio VPCS11V9E/B.
It won't turn on. Power button keeps flashing green (battery light turns orange when I press power button).
Also CAPS, NUM and SCROLL LOCK lights are flashing, but nothing else happens. As if it had hybernated, except that it not :)

So far I have taken it apart, replaced thermal paste as it was pretty much dried out.
Put it back together carefully - to no avail.

Even won't start even if the battery is out.
I know the AC adapter is good as I've tried it on another Vaio and it works.

Would really appreciate if anyone who recognizes the symptoms could share their experience and possible solutions to the problem.

Thanks in advance!

Edited by petruccio
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  • Latest Post Latest Post by dfghdfhgdfhg

Dani AI

Generated

Short expert summary and a focused troubleshooting checklist for the Sony Vaio VPCS11V9E/B issue reported by (power LED flashing green, lock LEDs flashing, no POST). The pattern means the system is not completing POST; common root causes range from simple CMOS/ram/boot-device problems to DC-in or motherboard faults. is correct that it can be a board-level failure, and ’s note about the clock/CMOS battery is a valid low-cost check to include in a prioritized sequence.

Recommended, ordered checks (safety first: remove mains, remove main battery, and discharge by holding the power button for 20–30 seconds before opening the case):

  • Perform a power-drain reset, then try AC-only boot (no main battery).
  • Replace the CMOS coin cell: disconnect power, remove the cell for several minutes and fit a fresh one of the same type; this clears RTC/BIOS settings that can block POST.
  • Test RAM: remove all modules, then try booting with a single known-good module in each slot (one at a time). Poor contacts or bad DIMMs often stop POST and cause LED blink patterns.
  • Boot with minimal hardware (no HDD/SSD, no optical drive, no USB devices, single RAM stick) to see if BIOS/POST shows; this helps isolate peripheral/HDD faults.
  • Visually inspect the DC jack, motherboard and around the GPU/VRM for swollen capacitors, burn marks or loose connectors; gently check if the DC jack wobbles. Measure the adapter’s labeled output with a multimeter to confirm correct voltage/current.

If none of the above changes behaviour, capture the exact LED blink pattern (count and rhythm) and note fan activity and any beeps; those details are useful to a technician. Persistent no-POST with the above checks typically indicates a board-level fault (failed south/northbridge, GPU BGA issue, or damaged power circuitry) and will need professional diagnosis or board replacement. Keep the hard drive intact if data recovery is a priority before any board-level work.

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Member Avatar for rubberman

Time to send it to the repair depot... :-( If it won't get to the POST (Power-On Self Test) screen, then something is seriously broken. It may be as simple as a blown capacitor (not uncommon), or even more serious, but unless you have some circuit repair experience, this is not a job for the amateur.

Member Avatar for donjohnston

Check the clock battery. If it is dead the computer will not start. You can buy them at your local Radio Shack. They look like a watch/fob battery.

Member Avatar for dfghdfhgdfhg

Did the change of the clock battery help?
I have the same issue with my vaio VPCS11V9E.

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