My dog chewed up my ac adapter for my elliptical machine. It is 6v dc and 1000 mA. I got a universal adapter from Wal-Mart that has variable voltage selection. I can set it from 3v to 12v. It has a 6v setting so I am ok there. The power is for the back-light lcd display. The new adapter is rated for 1300 mA. Will this adapter put out 1300 mA at all voltages? Will I fry my display with the extra 300 mA or will it self adjust to the required 1000 mA. Thanks for any help.