Recently I bought a replacement AC adapter on ebay, but it seems to be having an issue. If I plug it in with the battery, computer keeps switching between AC mode and battery mode every 10 - 15 seconds. If the battery is taken out and just the charger is plugged in, the machine turns on for a second, then shuts off. The rating for the G73 is 19.5V and 7.7A The rating for the AC adapter is 19V and 6.3A. So why is it not working when plugged in? I have it plugged in but the computer off, and the indicator light for charging the battery is lit. Not flashing or anything, just as if I was using the factory AC adapter. I'm going away on a trip and even though the charger that came with the laptop works, the adapter connector part was frayed and then mended. No issues with it, just that its bent. So I may be either stuck getting a universal charger or if any local stores have them. Edit: don't have time to order another one as I'm leaving the country tomorrow.