Only monochrome on Commodore 1702?

[ScanDisk]

So I hooked up my composite modded Spectrum to my Commodore 1702 monitor, but it seems it will only give me a black/white and different shades of grey display.

Now I do live in Canada, and I am feeding it with 110/120v 9v aftermarket power supply, but it still technically works.

I don't know really what's going on, but when connected to my modern LCD tv it does display in colour, but not the 1702.

I'd like to get color working on the 1702 because the image quality is far superior to my modern LCD.

anyone have any tips or pointers?

 

[Eudimorphodon]

Did you hook up the Spectrum to the connector on the front or the back of the 1702? The one on the front is normal composite and should give you color (assuming your Spectrum is outputting NTSC, not PAL.) The one(s) on the back are for separate Luma and Chroma feeds (basically S-Video). Hooking a composite output to the Luma feed results in a monochrome picture.

 

[Eudimorphodon]

... if your Spectrum is PAL, however, forget it. Maybe they made PAL standard 1702s, but any you find in North America will be NTSC only.

 

[ScanDisk]

Oh, I use the Luma/Chroma inputs for my C64 itself.

Yes my Zx Spectrum is PAL, so I guess it's the modern TV for display then.