Having some issues with eproms on my 2600. I first built a cart from a dead defender cartridge. Works and plays but I was getting some weird pattern blocking showing up in the background of every game I burned a ROM for. I tried shielding my homemade cart. I then bought some premade PCBs and they have the same issue. Ive tried several different 2732's and different rom images. Factory games do not have this issue on my console.
Console has been capped with new 5v reg and power jack. Any ideas?