A friend of mine has had his Sony Vaio psu die on him...it's not the original psu it and it looks like the laptop equivalent of an Ezcool. It also sounds like his battery is on the way out. If it was a tower I would have no problems in suggesting a reputable brand but I don't know if it's the same for laptops.
Could anyone suggest a good unit? Are units from Antec and FSP with universal fittings sound investments?