Main > Monitor/Video Forum
Flat, washed out colors on new Makvision M3129DS-LG Tri-mode
Josh128:
Did you ever figure this out? Dont be afraid to adjust the RGB drives/cutoffs. Just mark them before you move them so you can revert if needed. Also, you can switch the input impedance on the fly, no problem. It looks as if your Red drive/cutoff need adjustment. These monitors produce brilliant colors when working properly. See pictures of the one Im currently shipping back to seller because the shadow mask has apparently become detached and is experiencing "doming" in brights/whites. When not showing brights/whites the set is pretty damned beautiful.
15KHz Mode (All these taken with cellophane still on screen!):
25KHz Mode (Partially removed cellophane):
Vectorfire:
I did, it needed a video amplifier.
the output of a pc video card as it turns out is significantly less than that which an arcade monitor expects, giving this washed out look.
setup now is:
FroovyMamePC-->Sapphire Dua-X R 280 Radeon: DVI-I-->VGA adapter-->Ultimarc Video Amplifier--> 27" Makvision Tri-Mode Monitor
Once I got a video amplifier from ultimarc everything came out looking rich and crisp as anticipated.
I made another post about it that I requested get stickied as I'm sure a lot of makvision owners are living with less than stellar color depth and purity because of this mismatch.
Before
https://drive.google.com/open?id=1fGiyIdzzuitXFXGMDMXVN29pn2WsS7Bv
After
https://drive.google.com/open?id=1dGYitx2wErSwjowB7k5aRzVapMOrX2cg
http://forum.arcadecontrols.com/index.php/topic,162002.msg1708417.html#msg1708417
https://www.ultimarc.com/arcade-vga-and-video/arcadevga-accessories/arcade-monitor-video-amplifier/
--- Quote from: Josh128 on August 23, 2020, 10:05:57 pm ---Did you ever figure this out? Dont be afraid to adjust the RGB drives/cutoffs. Just mark them before you move them so you can revert if needed. Also, you can switch the input impedance on the fly, no problem. It looks as if your Red drive/cutoff need adjustment. These monitors produce brilliant colors when working properly. See pictures of the one Im currently shipping back to seller because the shadow mask has apparently become detached and is experiencing "doming" in brights/whites. When not showing brights/whites the set is pretty damned beautiful.
--- End quote ---
Josh128:
Awesome, glad to hear it! Odd thing though, Im feeding VGA directly from a HD5450 in my GroovyMAME PC to it, and although I have to turn up the pots some more on my remove board vs a standard arcade board, thats all I had to do to fix it. Perhaps the VGA out of the 5450 is hotter than a Radeon 280? What kind of amp did you end up using?
Josh128:
I know you have resolved the issue, but I just remembered that CRTEmuDriver allows for you to configure your card to output either TTL or 75 ohm levels, the TTL being 3-4V and the 75 being ~.7V. Dont know if anyone else has mentioned that but that might be the reason I had no trouble directly connecting my PC to both my arcade monitors.
fuchi_jeg:
I don't see that option. Is it located in the Vmmaker program?