@BuddyC Do you have any tips for calibrating the Toei chassis found in the MVS-U2/4/6 cabs and others of the same vintage? Specifically the TC-HV25LMK but I think there are a bunch that are basically the same. I find it a bit "weird" to calibrate compared to the Nanaos I'm used to. Very difficult to get everything balanced.
If I recall correctly, The TC-HV25LMK is a lot like the Nanao MS8 when calibrating.
Since it does not have a contrast adjustment, you don’t get unity gain control across all three video channels. This means you need to to adjust the cutoff and gain in harmony with the screen control on the flyback to achieve a decent calibration.
It takes time and shitloads of patience, but will look great if you give it a go.
I would start with a nice color bar. I primarily use a CPS2 test screen.
1. Turn down the R+G+B gain pots to about 50%/ middle mark
2. Do the same with R+G+B BKG pots
3. Do the same with brightness pot
4. Turn up the screen pot on the flyback until the screen gets too bright.
5. Carefully turn down the screen pot until the test screen background is full black again.
6. Adjust R+G+B BKG pot until every color is visable up until the ”2“ mark on the test screen.
7. Adjust the R+G+B gain pots so colors don’t bleed and look as uniform as possible.
Use the botton white bar as a guide. Should be white.
Not overly blu,green or red- white.
8. Adjust screen pot on flyback to achieve pure black. Most likely you need to turn screen down after raising gain and BKG.
9. Change to grid testscreen and adjust focus.
Hope it helps!
