Was wondering if anyone is an expert in the field of replacing laptop power cords. I have a Dell Latitude d810 that I have replaced the power cord and brick like three times now. The replacements are the off brands from ebay, and never seem to work for long or work like crap right from the start. They say they are compatible, but don't seem to fit snugly at the laptop, lose connection if the laptop is bumped in the slightest manner, etc, etc. I don't believe an authentic Dell power supply is available anymore as this is an older model laptop we're dealing with.
So, does anyone have any advice?