Here is an unexpected final to the story:
A replacement #Vaio Z11VN arrived yesterday, so I decided to put the old broken one together.
Having put everything back:
The laptop starts up
Here is an unexpected final to the story:
A replacement #Vaio Z11VN arrived yesterday, so I decided to put the old broken one together.
Having put everything back:
The laptop starts up
Small update: having attached the keyboard (which also contains wireless, HDD and battery LEDs) it turns out that after plugging the battery and having applied AC power, the charging LED is glowing orange-red! So at least charging circuitry is somehow responding.