Main > Monitor/Video Forum
DVI or VGA - Best connection from PC to TV
Alaska:
--- Quote from: Zebra on October 23, 2019, 11:54:57 am ---If you are trying to connect a PC to an SD CRT, it should be straightforward.
Crt emu drivers and groovymame is free and works with AMD 4000 (insert) 5000 series. I used to use a 4000 (insert) 5000 series card. Just find the right version.
Once your pc is outputting a 15khz signal, you just need a transcoder. Most AMD cards from that range can output analog RGB via DVI- I or VGA. I used to use a Jrok to convert 15khz analog RGB to component video. There are various others options too.
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And this will produce a picture similar to an RGB modded TV?
Update - I kept checking the local recycle center for a 27" CRT and found an old JVC (AV 2771S) after Christmas. After looking at the manual it looks like it may work?! The only RGB "in" on the PCB that I can find is downstream of the Sensor Control Processor that feeds into the ON Screen Buffer (Video - Chroma & Def Signal Processor). I could certainly feed a signal into this junction with a toggle switch, however, I am not sure what sort of modifications I would need in order to get a picture. Essentially I would be connecting my video converter with component output to the RGB input on the On Screen Buffer. By the looks of it I may need to buy a small board to modify the connections with a resistor and or capacitor as shown as shown prior to "in" on the schematic (see below for additional attachments)... I attached the service manual if anyone wants to take a look and chime in (it would be much appreciated).
Alaska:
Additional PCB Diagrams.
Above comment references chip IC701 on page 1, output pins 40, 41, 42 via line #13 to IC201 shown on page 2 and detailed on page 4 input pins 23, 24 and 25