Build Your Own Arcade Controls Forum

Main => Monitor/Video Forum => Topic started by: hiperco on March 22, 2005, 11:35:31 pm

Title: Video amp - what a difference! (But contrast is bad?)
Post by: hiperco on March 22, 2005, 11:35:31 pm

I got a video amp with my ArcadeVGA, and I have to say what a difference!  (My monitor, a 25" WG 25K5515, doesn't have the ability to be adjusted to work well with VGA level signals, I think because it doesn't have three "drive" pots, but rather only two...)

The brightness is much much better with the amp.  However...I seem to have too much "contrast", where the bright areas are bright but the dark areas are too dark.   I tried playing with the black level, screen, drive, cut-offs, etc, and made some improvement, but I'm not satisfied.

Any other ideas I can try?

Title: Re: Video amp - what a difference! (But contrast is bad?)
Post by: DaveJ-UK on March 23, 2005, 12:28:16 pm

It may be that your monitor needs a cap kit. If you don't know when it last had one, do it.

Title: Re: Video amp - what a difference! (But contrast is bad?)
Post by: hiperco on March 23, 2005, 05:18:46 pm

Thanks for the reply, but a new cap kit was already installed as I was bringing this beast back from the dead  8)

Title: Re: Video amp - what a difference! (But contrast is bad?)
Post by: hiperco on March 24, 2005, 03:12:41 pm

OK, so I got it to where I am happy with it  8)

Per Randy Fromm's info, I set all the pots (drive & cutoff) to the middle, then tweaked from there.

Always helps if you follow a process, rather than randomly tweaking the pots in no particular order  ::)