Hi, I got an HP (F70) D5064S 17" LCD Monitor from a friend who picked it up at a flea market along w/ a HP Pavilion 763n P4 2.53 which had the ram and HD gutted from it - all for $30!! I threw in 512mb and my 160gb drive, and it's been working great for a month - the computer, that is. The LCD screen however, did not come with the ac adapter. The specs are 12V 3.5amp. I'm looking for the cheapest I can find on ebay, since I don't even know if the thing works. I'm seeing ones that are like 4amp, 4.16amp, and 6.5 amp. an 50, 60, and 78watt. My question is - do these adapters "step down" to what the LCD requires, or would the 6.5 amp/78 watt (which happens to be the cheapest) burn out the screen? It takes the 4 pin style plug whih is less common on the LCD's. Any help would be greatly appreciated!!

As long as the adapter you get is rated at 12v and is capable of at least 3.5 amp you'll be OK. Do not get one smaller than 3.5 amp or it will probably burn out fairly quickly. Having a higher amp rating is OK, the LCD will only draw what it needs, not more. Not so on the volts. If the monitor says 12v, you can only use a 12v adapter. Any voltage higher than 12 risks damaging the LCD. To do the conversion on watts, divide the watt rating by 12 (for 12v) and you'll get the amperage. Ex: 60 watt = 60/12 = 5 amp.

Thanks a lot!! I really appreciate it!! I figured that it would be ok from my experience with computers/electronics/electrical. I know the conversion - worked at an electric supply for 8 years :) thanks again!!