Hitachi 27" 27MM20B Dual-Scan CRT TV??

[tacoguy64]

Yeah most do output 640×480 but there will be games that go lower than that. Was just trying to figure out if I will need something like a Tink 2x to pair with this just to make sure. I do have a few other PC monitors I could use, but this one is 27 inches. Ideally, I would have like to skip any scalers but this might not be possible.

I did see some of the pictures posted of s-video and it does look great. So I don't think I would mind if I'm using that connection. As far as which model, this one is the 20B.

[Josh128]

Yeah most do output 640×480 but there will be games that go lower than that. Was just trying to figure out if I will need something like a Tink 2x to pair with this just to make sure. I do have a few other PC monitors I could use, but this one is 27 inches. Ideally, I would have like to skip any scalers but this might not be possible.

I did see some of the pictures posted of s-video and it does look great. So I don't think I would mind if I'm using that connection. As far as which model, this one is the 20B.

Cool. Yeah, anything but 31KHz source will require a Tink 2x at minimum to work on VGA, but the S-Video looks great if you dont want to get a scaler for 15KHz sources.

[Minitron2]

Hopefully, that uploads the image successfully. I got the 15khz RGB working with proper brightness. I believe the correct resistance values will be 820ohm inline for the RGB lines, with 180ohm termination resistors to ground.

The values I used in this image were 680ohm inline, 330ohm termination. This is probably overkill but it's all I had available and I was itching to do the mod. To increase brightness, you simply raise the termination value and/or lower the inline value.

This needs more modification before I share the full build, as there is still bad artifacting due to the lack of diodes. The OSD is also nearly invisible, which may also be fixed with diodes.

I will report back when I finish the build, but for now, we know it's very possible. NOTE: This is the 27MMV30B version of this set. This mod should be compatible with both versions though.

[Josh128]

Nice work man, thanks for posting. For blanking voltage, did you end up sourcing the +5V from the set or from the console?