Nanao MS 2932 Vertical Spiningg.... HELP!!

I was not able to find any pot to adjust the vertical hold. I think maybe it s something else???

I was able to find everything else such as H-Hold, PARA, TRAP, H-Size, H-Shift, V-Size, V-shift, Contrast, etc BUT NO V-HOLD?

is there something else that i need to solder and replace? or is it because of VGA output to converter to the CPS2? I had tested the VGA Converter with different VGA Monitor and it works fine.

Hope someone can target the problem!.. Serial Number on the Chassis says 05b20085d1.

Thanks in advance.