11-01-2021, 11:31 PM
Check to make sure that your solder joints are good at the 8 pin video connector, as well as the VIC-II chip.
The 74LS629, MC4044, and 74LS74 along with the crystal (and of course VIC-II) are responsible for the video output. Check all of these to make sure that they are inserted in the proper direction... in fact, check all of the chips to make sure that all of the notched at facing towards the rear of the board.
The 74LS629, MC4044, and 74LS74 along with the crystal (and of course VIC-II) are responsible for the video output. Check all of these to make sure that they are inserted in the proper direction... in fact, check all of the chips to make sure that all of the notched at facing towards the rear of the board.