Hi Mike,

Any further progress or updates?

Hello All,

The artwork has been finished, checked, checked again and then checked once more. Any errors that might still exist will now be down to me as the final checker  

I have added at the last minute two new test points to make it simple to jumper the appropriate points to get "the last flash" when testing the board on the bench. Also a couple of resistors that are known to give problems have been upped in rating. A few extra legends have also been added for voltages etc.

I am off to the factory in PRC next Wednesday and this is one of about 10 boards I will be having made (others for paying customers  ) I will be in my office in China for a month and I will be bringing a handful of these boards back with me for initial assembly and testing. I now have an operational Bally Space Invaders to test the first builds in so that will flush out any issues.

I have also taken the plunge and will be having custom made 7 segment displays so I will progress the replacement Bally/Stern display boards after I have them made.

Here are a few more teaser pics of the new test points and the artwork for the 9602 replacement board that I will have made as well (the last pic shows one of my prototype 9602 under test):