Sanyo 31C426 RGB input pinout

[ituba]

Thanks Titan1a, dr.ido, Zenith26kc20, and Findm-Keepm for your help.

I could not find any info on old Proton TVs, but I think Findm-Keepm has the correct answer and it is a digital RGB input. I pulled the rear cover and took pictures of the circuit board the RGB input is connected to. My understanding of electronics is limited, but it seems to me that the RGB input connects to the two ICs on the front of the board, and these appear to be digital gates.

So, Titan1a, this would work well with your Commodore 128.

[colorfixer]

All might not be lost. See if you can get a schematic for this beast. You may be able to simply remove the gates that are in the video stream, or apply your RGB video to the output of this daughterboard directly. This monitor looks a lot like the original 20EZV arcade monitors which had cabinets rather than metal open-frame chassis.

Originally Posted by ituba

Thanks Titan1a, dr.ido, Zenith26kc20, and Findm-Keepm for your help.

I could not find any info on old Proton TVs, but I think Findm-Keepm has the correct answer and it is a digital RGB input. I pulled the rear cover and took pictures of the circuit board the RGB input is connected to. My understanding of electronics is limited, but it seems to me that the RGB input connects to the two ICs on the front of the board, and these appear to be digital gates.

So, Titan1a, this would work well with your Commodore 128.

[ituba]

Originally Posted by colorfixer

All might not be lost. See if you can get a schematic for this beast. You may be able to simply remove the gates that are in the video stream, or apply your RGB video to the output of this daughterboard directly. This monitor looks a lot like the original 20EZV arcade monitors which had cabinets rather than metal open-frame chassis.

Thanks for the tip. That thought has crossed my mind too after I read a post online by someone who tapped into the input lines of the jungle IC of an older CRT to create an analog RGB input. But there are a few challenges. For one, I can't even find an owner's manual for this TV, let alone a service manual. I've looked up the Sanyo 20-EZV and found its circuit diagram, but that does not seem to have a digital RGB input. so it does not give me any hints on how the input daughterboard works in my TV. Although I can certainly manage soldering a few wires to contact points on the circuit boards, I really don't understand enough electronics to be able to trace the lines on the input daughterboard to figure out where the digital RGB signal is converted to analog. Even if I did find the proper points to tap into, how would I know if the signal voltage corresponds to the signal voltage of a standard analog RGB signal? Or is there some reason to believe that it should?