FamicomBaseball

Nope. I still don't have it.

Much like Thomas Jentzsch I don't think it is the colour switch as the B&W image in colour mode is different than when you switch. So even before it warms up the colour switch appears to work switching between two different kinds of B&W image. I've not tried a different TV, I only have one I've been thinking of taking it to work and trying it there with one of our office TVs. Will give that a go.

Has anyone had this issue before: My Atari 2600 only shows a B&W image until it warms up. I'm attaching images showing what it looks like before and after it warms up. The B&W image it shows on colour mode before it warms up looks different to the B&W image you see when running in B&W mode, the B&W mode image is smoother and has no lines across it. This is a PAL Atari 2600 console running on a modern PAL TV.

I grew up in Venezuela and in my experience there was never an issue at all with fake Atari carts, this does not apply to Famicom where the majority as far as I can tell were locally made fakes with poor cover art, strange looking carts.