Wonder Wizard with grainy picture

[technomancer]

Hello folks,

 

I have an old Wonder Wizard I am working on that initially had no video. The unit is essentially a pong machine with a couple of game modes. I took apart the switch box used to convert the odd coax connector it had to the two antenna leads and noticed that the center peg of the coax connector was broken off the board. I re-soldered it on and now I can get a picture but it is decently grainy. From what I had read, the converter box for this thing is the same one used on the original Magnavox Odyssey though I don't know how true that is.

 

I currently have the unit hooked up to a small 1080p LCD TV. Does anyone happen to have experience with one of these units (or an old Magnavox Odyssey) and dealing with a grainy picture? Is it a factor of me trying to get it to work on a modern TV or is there something else I should be looking at to try and clear up the image?

[technomancer]

Forgot to close the loop on this one. It most certainly was due to me using a modern TV to test the unit with. I tried it on an older CRT TV and it worked just fine.