Re: upgrading HP 2509B to LED - Need help
does anyone know what the voltage range that is needed for the brightness control to work correctly. obviously the connection i made does not have enough range (1.2v to 3v) for it to alter the brightness by much. could i hook it to a higher voltage source, lets say 5v and use a potentiometer (that i could mount next to the on/off switch i did) to alter the voltage from that to 0v. Or do i do the same with the voltage i have 3v and make adjustable down to 0v. The controls for brightness to operate in reverse but that doesn't bother me. Just a thought....
does anyone know what the voltage range that is needed for the brightness control to work correctly. obviously the connection i made does not have enough range (1.2v to 3v) for it to alter the brightness by much. could i hook it to a higher voltage source, lets say 5v and use a potentiometer (that i could mount next to the on/off switch i did) to alter the voltage from that to 0v. Or do i do the same with the voltage i have 3v and make adjustable down to 0v. The controls for brightness to operate in reverse but that doesn't bother me. Just a thought....
But today, I’m making an exception here. Why? No idea. Perhaps only because the repair details are still “fresh” in my head… which is ironic, given this is a 16 year old monitor that hardly anyone will care about today. It is new to me, though. 
I picked it up last November from someone on my local Craigslist. It wasn’t very close to where I live, but was close to a family friend that I had to go visit anyways. So after watching the posting on Craigslist for a few weeks and seeing it getting...
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