I purchased a board to run an old laptop LCD screen. The description on ebay says I need a 12 V 3 A input source. I only have 12 V 2.5 A and an old laptop powersupply at 14 V and 4.74 A. I thought about using a DC DC (LM2596) converter which is rated at max. 3 A to get the laptop power supply down to 12 V.
This feels like a hacked solution instead of purchasing a 3A power supply. But as I wanted to save money with this project and already have the converter I figured this maybe a solution as well.
Are there any safety issues with this solution I should consider? Any reasons one should never ever do that?