3.06ghz, 512m ram, 80g hd.
I bought a new battery.
The laptop will not run for longer than 20 minutes using AC power with battery installed.
Then it tells me to switch to AC power even though the AC power unit is connected.
The AC power units green LED is on and the voltaqe measures 19.5 as it should.
The laptop will not run at all on AC power with the battery removed.
Sony says it should.
I suspect the power control board is defective and should be replaced.
Any help will be appreciated.
Also, where is the best place to buy parts for laptops?