Just acquired a MC CT; it has a randomly occurring vertical roll - you can adjust it out using the control on the monitor but it comes back during game play.
So far I have capped the Sanyo 14"monitor with a kit from Bob Roberts and it still does the same thing; there is also randomly occurring static like graphics corruption - and the cities don't look right after being destroyed.
I replaced an obviously damaged ARII board with a known working one. The rolling slowed down and it held longer, but it still occurred.
I also found one ROM socket with a faulty pin.
The self test finds nothing wrong - RAM and ROM check out.
I want to order parts from Bob Roberts (like a Big Blue for starters) but I need advice on what parts may need replacing. Voltages all checked out but I noticed a tiny bit of fluctuation on the 12V which I blamed on the Big Blue.
Here's what the city graphics look like:
Here's an example of the "static":
Also, someone did a wire hack here:
And finally, this part was damaged on the old ARII board but putting in a non-damaged one didn't see to make a difference. What is this part?
So far I have capped the Sanyo 14"monitor with a kit from Bob Roberts and it still does the same thing; there is also randomly occurring static like graphics corruption - and the cities don't look right after being destroyed.
I replaced an obviously damaged ARII board with a known working one. The rolling slowed down and it held longer, but it still occurred.
I also found one ROM socket with a faulty pin.
The self test finds nothing wrong - RAM and ROM check out.
I want to order parts from Bob Roberts (like a Big Blue for starters) but I need advice on what parts may need replacing. Voltages all checked out but I noticed a tiny bit of fluctuation on the 12V which I blamed on the Big Blue.
Here's what the city graphics look like:
Here's an example of the "static":
Also, someone did a wire hack here:
And finally, this part was damaged on the old ARII board but putting in a non-damaged one didn't see to make a difference. What is this part?

